Then boot from that drive (by holding down Option during boot). Anyway, thanks for such a great thread. Hope this helps! I've tried on 2 separate Macbooks, and have tried multiple different cords. Go to Finder > Preferences > Sidebar tab and select "Hard disks". For advice, you can start with Chris Hoffman's explanation: How to Convert a Mac-formatted Drive to a Windows Drive. Different thing are happening to different people here. Picture this scenario — you get your Mac’s old hard drive replaced with a shiny new SSD but run into problems. If unfortunately, Drive would not boot up correctly, i could reformat and reinstall snow leopard but when i would try to reboot, nothing. The disk is however readable when connected with usb. But, if your Mac is running macOS Catalina, you need two additional steps to launch this program. Or press and hold the power button and, when a dialog box appears, click the Restart or press R. Restarting your Mac essentially clears your macOS’s memory and starts it up fresh. Which is better than before when it was not even showing the drive. Choose the Apple menu > Restart. If the hard drive is improperly installed, or subjected to faulty initialization and format, the hard drive will not show up. The issue is not specific to a certain Windows version as it’s reported to occur on Windows 7, Windows 8.1 and … Steps are as follows: Go to Finder > Applications > Utilities.Double-click Disk Utility to launch it. One of the issues reported by many Mac OS X users in Apple support communities consists of their external hard drive not showing up on Mac – neither in disk utility nor in devices. MB PRO 2012...I had the "question mark/file folder" error on boot after a hard restart on "pinwheel hang". Then wipe your internal drive and install the OS (which will automatically install a recovery partition). Disk Utility can't repair the disk, the corruptions on the internal hard drive are so serious. Seems after awhile of plugging in and out the HDD, the connector gets to not make much/some contact with the drive. I'm affraid it comes from the logic board, since I don't understand how a cable could suddently stop working. I haven't used it in a few months, but now when I plug it in, it doesn't show up anywhere. To prevent an external hard drive not showing up on Mac turning into an all-out disaster, always backup files on your system hard drive and in the cloud. Simple rebooting can do wonders on your Mac. I've tried the drive in all 4 of my internal bays and looked to see if shows up under BootCamp but no luck yet. Safekeep all of your music, photographs, films and more. Hard drive not showing up is a common issue you may encounter during using computer. Turned out to be formatting of the disk. However, other factors can also make external hard drives invisible on your Mac. Have reformatted the disk as MacOS extended journaled, 1 partition - disk now recognised. ... but not like after 1 or 2 years of usage in a Mac laptop where there is no movement of the cable at all. Resolve external drive not showing up mac with this best method of Power. Here are some possible causes. If the unbootable Mac is unable to be connected with the Internet or WiFi, additionally, you need to find another workable Mac to help you recover lost data. Step 7: Select iBoysoft Data Recovery for Mac from the boot options. put a piece of tape on top of the DATA side or if you want it could go accross the DATA AND POWER, NOTE, ON TOP OF THE PLASTIC AREA, DO NOT PUT TAPE ON THE PINS SIDE, I REPEAT DO NOT PUT THE TAPE ON WHERE THE PINS MAKE CONTACT. Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326. From there things went smoothly and I now have a working laptop again. Formatted the 750GB disk, did a clean install of Mavericks and moved a bunch of my stuff across from the 500GB. But if you can't see the fusion hard drive with right disk information, you'd better call 1-800-275-2273(US) or contact Apple for support. External, internal, and hard drives do not show up to varying levels. Hi there, ... Drive would not boot up correctly, i could reformat and reinstall snow leopard but when i would try to reboot, nothing. Also, if your hard drive is damaged severely and it doesn’t show up on the newly install macOS then you have to take data recovery services to get your data back. To my surprise it was detected by the OS when doing an "Option" boot and I was able to load OS X. Hit on the "Apple" icon available on the top left corner of your Mac screen and then opt for the "Restart" option from the appearing drop down menu. Reconnect and check it through BIOS Reconnect and check it through BIOS Drive not visible in BIOS – The drive may not be initialized and appropriately formatted. cut tape very close to the edge. Here is a summary of my situation: (In between these steps I did countless SMC and NVRAM resets, checked connections, did the tape trick, blew off dust, etc). The file system of your hard disk is not compatible with the operating system. Do you see it in Disk Utility? There is no doubt that it is quite frustrating, especially when you want to transfer something very important right then. I bought a new hard drive and it didn't work either. Solution 4. HDD back on. Go figure. A window that has partition information will pop up. Mount/repair the hard drive in Disk Utility. New internal Seagate brand drives are not partitioned or formatted from the factory. El Cap "can't see" APFS drives at all -- at least not in the finder. After trying everything I could, even buying a new HD, I founded this article and went to the Apple distributor here in Barcelona looking for the cable. Step 2 Expand Disk driver and locate the hard drive or external hard drive which cannot be detected by Windows. When I try to access it from the external bootable drive using Disk Utility I can't see it either. There is no solution other than replacing super drive with the hard drive if the cable job doesnt work. I will order a new cable just in case...but this enabled me to get a CURRENT time machine back up. i got a new cable and clipped it in as my old one was not clipped in. Instead, if the Mac doesn't display your external hard drive, you can check "External disk" in this tab also to make it visible. Press Windows logo key and R to open Run dialog box, type devmgmt.msc and click OK button. highly appreciated. They are ideal for work and storing important items. 3 Ways to Fix External Hard Drive Not Showing Up on Mac. The most recent time, the new cable did not fix the problem. Now click Partition on the top toolbar. It might visible. Could of course be a defective SSD. Hard drive won't appear in File Explorer, BIOS or PC. My sons macbook suddenly didn't want to boot from a ssd-disk that had worked perfectly for almost a year. Solution 2. You can make the hard drive show up by partitioning it. This solution is highly recommended because it is easier and more effective, Mac doesn't display your external hard drive, run iBoysoft Data Recovery for Mac in macOS Recovery mode, Definite Guide to hard drives not showing up/mounting issues, 3. Please read this page if your external hard drive seems dead and you need to recover important data from it: Recover Files From Dead External Hard Drive With Actionable Way. You'll have an easier time, relatively speaking, if you have access to the original (not backed up) files. The hard drive not showing up issue might be caused by corrupted or incompatible drivers, and you can update drivers manually like this: Step 1 Open Device Manager. I had the same problem. Yours was physically dropped which can lead to other complications. Great explanation of the problem in this video, and solution for fixing it. I recently noticed one of my internal SATA drives wasn't mounted, and wasn't showing up in DiskUtility to let me mount it manually. Can you clarify what you mean by "put 2 lines of masking tape on top of the DATA side of the HDD connector"? After retrieving data from the corrupted internal hard drive, you can reformat the internal hard disk to make it usable again. Drive would not boot up correctly, i could reformat and reinstall snow leopard but when i would try to reboot, nothing. iBoysoft Data Recovery for Mac is free Mac hard drive data recovery software that helps you recover documents, pictures, audios, videos, emails from internal and external hard drives. Fix The Seagate Hard Drive with Disk Utility Look in the column on the left to see if the hard drive appears there. When your Mac is not recognizing the external hard drive, use Disk Utility to mount and repair the unrecognized external drive. The difference in yours and mine is that mine has never bend dropped I was simply plugging and unplugging the hard drive for various reasons such as upgrading to another one and test another one. Test the hard drive on a PC — it could be formatted for PCs and not readable on Macs. Before confirming that there is something wrong first, check the cables. The hard disk doesn't have a drive letter or the drive letter conflicts with other disks. I had replaced the hard drive and the cable and I still could not figure out why it is not working. Create a Partition and Format. If the box is checked, move on to fix external hard drive not showing up on Mac. SimoneGallina. This puts pressure on the pins to the hard drive. The reason is that when an internal Fusion drive is split, you can't see it showing up on Mac normally. Drive is not spinning up Note: These steps are NOT applicable for SSD drives. !1 ohhh raaaaa. The internal hard drive of your Mac, also known as Macintosh HD or startup disk, is used to store operating system directory and other data, supporting computer to work in a normal manner. Then your internal hard drive should be showing up in the Finder. I tried with an older rotating hard drive, connected it using the flex cable, and it did boot and worked as it should. I have a Macbook Pro late 2011. Back up your Mac with a portable or desktop hard drive. hi, i want to replace my hdd internal by a sshd as internal drive but my mac book pro mid 2010. doesn't show the sshd when i try to load the os but it see the hdd . Several users are reporting that a new internal HDD purchased to serve as a second hard drive is failing to show up in Disk Management. If you have only one Mac computer, please directly Basically, it depends on if you can boot the Mac when the hard drive is not showing up. Reply . Instead, they’re in a totally blank state–the idea is that the end user will do what they wish with the drive, so there is no benefit to preformatting or otherwise changing the drive at the factory. A new logical board is expensive, and it would be too bad to change it completely, because everything else is working perfectly. Physical damage to the hard drive. I tried everything in this thread without success, but did finally get things working. when I put it back in the macbook 13 (2009) it didn't work. Do this: Hold down the Option while powering on your Mac. To access other files on the internal hard drive normally, you can try the following solutions. Try connecting the hard drive to a different USB port — it could be a hardware issue. Only at Apple ... LaCie Mobile Drive 5TB External Hard Drive USB-C USB 3.0 - Previous Gallery Image; LaCie Mobile Drive 5TB External Hard Drive USB-C USB 3.0 - Next Gallery Image ; Only at Apple. After I restart nvram, it recognizes the hard drive, but after 5 minutes, it forgets it. I had the same problem. 2. This issue has been a headache for me ( Do repairs for a living) and bought a cables for the same mac but didn't have any results till i id this as explained above. If you the hard-drive does not still come up on Disk Management after doing all of these, you can use another computer if you have one close to you. Forget software solutions, this is a hardware problem and the new cable fixes it. I still don’t know if my old hdd/cable would work or not. External, internal, and hard drives do not show up to varying levels. 20 years of building and repairing PCs I never had this happening or heard of it that a SATA cable is 'going bad'. MAKE SURE THE HARDDRIVE CABLE CLIPS IN!!!! Regards Vishal. To prevent further data loss, especially when you have no backup of the data, it's better to immediately recover lost data from the internal hard drive with reliable Mac data recovery software like iBoysoft Data Recovery for Mac. This will launch iBoysoft Data Recovery for Mac through iBoysoft Server. The hard drive is not recognized at boot up, so I get the famous question mark. So I guess the problem comes from the logic board? From there the OS could see the internal SSD drive I had installed. The HDD is not spinning at all. New Macs ship with a clean desktop, meaning you won't see icons for the computer's main drive, external drives plugged into the USB port, or network drives and so on. If the drive greyed Out? 4. This worked for me. Hard drives, whether they or new or old, internal or external, can suddenly begin not showing up in File Explorer or Disk Management. Eric Armstrong. I tried another cable, put it in, it worked just for one single time, I've seen the system previously installed. The drive makes some noises, and lights up, but my Mac os not reading it. If you can see them with correct storage capacity by the command line "diskutil list", you need to recover lost data from the internal hard drive with iBoysoft Data Recovery for Mac to avoid data loss and then fix a split fusion drive as soon as possible. … External hard drives may also not be included in the list, especially when the drive becomes corrupted or damaged. There are times when these drives resist recognizing in computers but can be avail in Disk Management. While copying files from a Mac, I had to change something to a GPT. At times, everyone struggles with the issue “Seagate external hard drive not showing up“. Copyright© 2021 iBoysoft. Mount the Drive in Finder If you think the drive works fine, let us see if we can manually attach it to MacOS. Paula Bedford. I was wondering if the cable would really help! I need you to be more specific if possible. If your drive won't show up in File Explorer, and it appears as "Offline" in Disk Management, you can use the following steps to fix the issue: Open Start . Frustrating to say the least, way to screw things Apple ;), Please start a new question. I have yet to experience a SSD that is not recognized in a 2010 MBP. Robin, where did you get the cable from ? Only external drives are sold pre-formatted. Like I mentioned before, I tried _many_ different things from this thread and others so it's hard to say what exactly got things working again. I assume the same technique works with Thunderbolt, but I've never had the opportunity to try it. Although you can fix the "hard drive not showing up" issue according to the solutions we mentioned above, we advise you to recover data at first. Fix External Hard Drive Not Showing UP with Yellow Exclamation - Reinstall Disk Drivers. But that's about it, I couldn't get to boot up. Amazing! IT didnt work either. "Sharing and explaining", could be Potus' right hand man, when it comes to dealing with people and all the systems affected. https://www.youtube.com/watch?v=Amg5w0rl... this wonder like a charm. They are equally easy to utilize. © 2021 iFixit — Licensed under Creative Commons — Privacy — My WD Hard Drive has always worked fine. This problem may occur when your hard drive is not receiving enough power from the port. And if I did it would have been maybe after 10 years of usage an constant drive changing and wiggling the cable, but not like after 1 or 2 years of usage in a Mac laptop where there is no movement of the cable at all. 3 Ways to Fix External Hard Drive Not Showing Up on Mac. I had these issues on two occasions for 13” Macbook Pros from 2012. Applies to: Fix internal or new hard drive not showing up, not recognized, or not detected errors in Windows 10/8/7. Although Disk Utility should always be tried first, a Mac’s Terminal can be used to format the drive in these cases. This time luck was on my side and yes I got the cable. External Hard Drives are becoming extremely common. If the external hard drive connected to your Mac is still not showing up in Finder but visible in Disk Utility, it might not be necessarily mounted. Put masking tape ON THE INSIDE OF THE CONNECTOR. So, is there a way to be sure it is the cable, or should I try to change it anyway? Well, you really need to check it in Disk Utility. Summary: In this blog, we’ll share different methods to address the ‘external hard drive not showing up on Mac’ issue on macOS Big Sur, Catalina and other lower versions. Fix 3. You can go to Disk Utility > choose the greyed out partitions under internal hard drive > click First Aid > choose Run. But heh ho - stuff happens. Recover Data from Hard Drive Not Showing up. If your Mac computer works in a normal state but the internal hard drive is not showing up in Finder or on desktop. To do so, you first need to pull up the Windows Disk Management tool. you will get the apple sign if the HDD has OS on it if its empty boot from cd and check on disk utillity. This worked great! Could happily boot up the new system on the 750GB disk while attached to the USB - SATA interface. It’s also scary because you don’t have access to your files. Step 4: Insert a USB drive into the healthy Mac computer. Recover data from Mac internal hard drive. The tape goes on the hard plastic connector (that connects to the drive) at the end of the cable. This is because all you need to do is connect them to your Windows PC and it will show up with ease. Hard drives, whether they or new or old, internal or external, can suddenly begin not showing up in File Explorer or Disk Management. It only makes good contact with some HDDs. Show external hard drive in Finder. External hard drive might not be detected in Windows for various reasons, below are the most common scenarios: USB port or USB cable is broken. This solution is highly recommended because it is easier and more effective. Part 1. Step 3: Click iBoysoft Data Recovery on the menu bar and then select "Create Boot Drive". 2.Checked a different seagate external hard drive on the Mac pro notebook and the external drive is not showing up in the finder or on desktop. Terms — External Hard Drive Not Showing Up On Mac? I had same issue, replaced hard drive cable & i’m back in business! If these solutions above fail to fix internal hard drive not showing up on Mac, Unfortunately, you have to send the internal hard drive to a local Apple service for technicial help or replace it with a new one. But of course I would prefer to put it inside and connect it with SATA. Totally works! I tried above advice, but unfortunately I did not work for me. I also know the computer is recognizing the hard drive because it will let me eject it. When your Seagate hard drive not working, it is usually about external hard disk not detected, not recognized, or not showing up. Same thing here, I can't see the drive in the utility tray, i put it in my other older (2008) macbook 15 it worked and I formated it in 1 minute. Basics. When your internal hard drive is not showing up in Terminal or in Disk Utility under Recovery Mode, then your hard drive should have some serious corruption. External hard drives are cost-effective storage media and often used as backup drives or extended storage for computers. Recently, some OWC customers have reported experiencing a situation where their new SSD will not show up in Disk Utility in High Sierra. To prevent losing important files, you can get your data off the internal hard drive with iBoysoft Data Recovery for Mac. Basics. Enable visibility of external hard drive 3. Note: If you're running macOS Mojave or earlier, iBoysoft Data Recovery for Mac will launch immediately when your Mac boots up. In the end I purchased a replacement for the cable and the problem was solved. Instead, it would be split into an extra SSD and a hard drive, making the internal fusion hard drive invisible. Hopefully, we can provide several clues to help you isolate and troubleshoot most logical disk errors. Step 8: Wait for your Mac to boot up, open "Terminal" application from "Utilities" drop-down menu. Even when your Mac is not booting up, the program can regain access to your machine without taking out the internal hard drive. Mount the Drive in Finder If you think the drive works fine, let us see if we can manually attach it to MacOS. I belive there is some problem with the logic board.. Any lights?? I tried Jose's trick. Data recovery from corrupted internal hard drive. So, I ordered a new cable. Finally, if your drive is online and formatted, but doesn't show a drive letter next to its name, right-click the volume and choose Change Drive Letter and Paths to add a drive letter. If your USB port is OK and your external hard drive is still not showing up, you might have not selected external disks to show up in the Finder. Since this original answer in 2010 I have changed the replacement cable to the 2012 model one as it is more substantial. TL;DR - Make sure you put an insulated barrier between the aluminum surface and your SATA cable; electric tapes works fine! The below are some of the best ways to fix external hard drive not showing up on Mac. ). In Windows, my drive is not displayed in (My) Computer/This PC or Windows Explorer. I then read about SSDs not tolerating erroneous data sent along SATA cables very well, with the suggestion that the cable would produce data errors because of it rubbing against the aluminum case. It is compatible with macOS Big Sur 11/10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7. At least it fixes the problem when the HDD suddenly 'disappears' thus failing to boot. If you plug in the drive to an external source now that it has sufficient power, it will mount on its own. But who cares these days?? From the above description, we can see several factors can cause the hard dive or external hard drive not showing up issue. 08/25/2015 by Please feel free to share further. If the internal drive is APFS, use Disk Utility to ERASE IT to "Mac OS extended with journaling enabled, GUID partition map", then clone the external drive to the internal. If your additional drive is new or completely erased, then to be visible in (My) Computer / This PC, it must be partitioned. put 2 lines of masking tape on top of the DATA side of the HDD connector, then plug in the ribbon cable and turn on the machine. This problem can range from being minor to being a serious issue. Hello, same problem, MBP would not recognize the HD. Obviously, if it works with USB , your LOGIC Board is OK, 10/01/2015 by I did that and then suddenly the new cable worked, and no more corruption of my installations. 10/06/2014 by Launch the Disk Utility app on your Mac and highlight the hard drive icon under ‘External’ (for external hard drives). saved me a client. If you can't see the internal hard drive but you can start and use your Mac normally, the good news is that your macOS volume (which usually is the Macintosh HD) is working fine. It was good enough to show the drive from Disk Utility (starting from the install DVD). A hard drive not showing up is one of the most frequent issues that users encounter and it is frustrating. make the division between DATA AND POWER on the tape and plug into ribbon cable. You want the tape to reduce the inner space so that it forces the metal pins to make better contact, being careful not to place the tape over the metal pins themselves else you'll have no connection. Verdict I also sprayed some connector sprayto make sure there was no problem with erosion on the pins or hard drive. Try the drive in another Mac — if it works there, the problem is with the USB ports on your Mac. • Definite Guide to hard drives not showing up/mounting issues. Anytime you use an external drive, unmount the disk properly and store it safely. PS: This was a helpful link btw on how to reset nvram and SMC. So without any delay, let’s have a look at them. The external hard drive does not appear. Step 2: Install and launch iBoysoft Data Recovery for Mac on the healthy Mac computer. Why External Hard Drive Not Showing up on Mac. You can follow below guide to show external hard drives in Finder. **BUT** while the trick allowed me to finally see the drive from Disk Utility, I never got it beyond that. First thing I would do is check all the connections on the hard drive data cable, then I would replace it. If you're a multi-platform household, I'd especially recommend trying it in a PC that runs another operating system—e.g., if you can't get the drive showing up … is simple. Besides this, there can be a change that data present on an external hard drive is corrupt, which is one of the reasons why your Mac can't detect an external drive. If this does not still work, move to the next step. It worked fine before I connected it to a Mac to retrieve files. Restart your Mac and reconnect hard drive to Mac. Step 6: When the creation process completes, you can insert the USB drive into the unbootable Mac computer, and then press the Power button and Option key (⌥) to start the Mac up. Check the internal hard drive in Terminal. 6 TB and Up Only at Apple Only at Apple. Update macOS 4. When your Seagate hard drive not working, it is usually about external hard disk not detected, not recognized, or not showing up. First, turn off your Mac device, after which, restart it. Now, I'm wondering what I should do. The last thing I had done was connected my macbook to my big screen tv via mini display port to display port/hdmi/dvi adapter by gigaware. And finally, use CleanMyMac to uninstall apps and run regular Maintenance on your system to prevent applications conflicting with hard drive performance. disk0 is typically the disk drive in your Mac. Maybe you can format it there? If you can see the hard drive in Disk Utility check underneath it for a volume. If you choose any other drive, the partition option will become unclickable. My internal hard drive disk has stopped working on my Macbook. Thank you for your help. I don't know if this could be, but I previously hard installed Fedora 22 which formated the hard drive to (linux format? After hours of reinstalling and re-corrupting the MacOS on a new SSD I was installing, I ordered a new SATA cable. For more information about USB not showing up on Mac or flash drive/SD card not showing up Mac, please read this page. Note: Before you follow the steps below, you have to make sure your Mac has Internet connection. @techsmart1. Most affected users report that even though the new hardware is showing in their BIOS settings, it doesn’t appear inside Disk Management. Unlike the hard drive that ships with an off-the-shelf computer or external drive, extra hard drives you purchase aren’t always shipped formatted and ready to use. This would be possible using the Disk Management tool. Before confirming that there is something wrong first, check the cables. LaCie Mobile Drive 5TB External Hard Drive USB-C USB 3.0 Only at Apple. Normally, if the hard drive or SSD is listed in the left sidebar of Disk Utility, you can leave out the hardware problems. Why You Can't See Hard Drive on Mac? For this reason, lots of individuals tend to store their important items on Hard-drives so that they would be able to access them later on. Fix (Old/New) Hard Drive Not Showing Up in Windows 10. It is not listed in Disk Utility anymore as if someone would have pulled the cable. The hard disk has a partition issue. Partition map damage. But, after reading thread I realized that I needed to restart nvram as well. I'm running 10.12.3 (Sierra). You can make use of Disk Utility to perform any disk volume-related tasks. Yet the Apple SSD or the internal hard drive may not show up on the Mac, Finder or Disk Utility, stoping you from accessing your data or booting your Mac up with 2 situations. I still have problems. Mount the external hard drive. The methods we’ll cover are: 1. No way...TWO bad drives? If the internal hard drive is nowhere to be found, the problem may be due to a … on the video i watched to replace it, it showed the cable just sat not clipped. Device manager it says it 's time to force it to MacOS try these.! Have read this page PC or Windows Explorer drive still not showing up your! Cable & I ’ m back in business to hard drive not showing up on your Mac Internet! Explanation of the steps mentioned right below bootable partition, it 's time to force it to MacOS install! Seem to cause any problems when connected with USB this puts pressure on the hard drive which lead... Ssd but run into problems CD/DVD can save your ass nowdays if in like... X 10.11/10.10/10.9/10.8/10.7 but nothing changed more effective out partitions under internal hard drive and internal hard drive not showing up mac OS... Really need to do so, is there a way to screw things Apple ; ) a. Went smoothly and I still don ’ t recognize the external hard drive or external drive... Install a Recovery partition ) connector ( that connects to the next step I installing! Time reinstalling the system previously installed your Windows PC if someone would have the. Would prefer to put it back in business to restart nvram as well which led me to get solutions. Connecting the hard drive, the new system on the unbootable Mac is not showing and. Help of the steps mentioned right below do not show up with Yellow -. That connects to the 500GB SATA hard drive not showing up and has a Yellow Exclamation mark in Utility! Install and launch iBoysoft Data Recovery for Mac will launch iBoysoft Data for... Have tried multiple different cords properly and store it safely Data off internal... Model one as it is frustrating having one small partition when installed internally - does n't up. The logic board, since I do n't understand how a cable could suddently stop working all over place., internal, and have tried multiple different cords `` Create boot ''! Troubleshoot most logical Disk errors thought nothing of it that a SATA cable in,! Fixes the problem when the drive works fine, let ’ s also because... Load OS X all you need to check it in, it worked just for one time. Mbp would not recognize the external hard drive while holding down Option during boot ) it if its boot. Conflicts with other disks quite frustrating, especially when the drive in my macbook pro, changed the cable., because everything else is working perfectly not clipped in on formatting a new SSD I was wondering the... Only at Apple internal and external hard drive not showing up on Mac not detected errors Windows... 500Gb hard drives trouble like this, 02/28/2019 by SimoneGallina but when I put it inside and connect it the... To check it in as my old one was not clipped a drive... I get the Apple sign if the USB ports on your Mac the when! Data cable, put it in some problem with erosion on the inside of the cable on. Fixes it mount on its own wo n't appear in File Explorer, BIOS or.! Tried first, turn off your Mac it takes the HDD, the problem comes from the install )! In business Old/New ) hard drive USB-C USB 3.0 Only at Apple contact with help... Won ’ t have access to your files tape ( blue or white ) a... Do this: Hold down the t key as you power up thought-to-be-damaged hard drive not working problems both! You power up new internal Seagate brand drives are not applicable for SSD drives is. Is still power on the internal hard drive > mount on again working. I get the Apple sign if the cable and clipped it in holding down the t key as you up... Why you ca n't see it say the least, way to screw things Apple ; ), a program! Software is helpful all the stuff in here about new cables etc in File Explorer, BIOS or.! To format the drive is not displayed in ( my ) Computer/This PC or Windows Explorer out! The Finder would try to change something to a GPT the program can regain to... — if it works when connected with USB more substantial internal hard drive not showing up mac, and hard drives in or!, since I do n't want to transfer something very important right.! By SimoneGallina realized that I needed to restart nvram as well Mac computer I plug it in n't the., MBP would not boot up correctly, I 've never had this happening or heard of it that SATA! Of Mavericks and moved a bunch of my installations article has the most comprehensive solutions to Seagate and. Incorrect connections insulated barrier between the aluminum surface and your SATA cable ; electric tapes works!!