Plug in the USB cable into the Mac. Turn ON the external drive when the USB cable is connected. My drive will ONLY initialize itself as a 'talking to the computer' hard drive if I have the USB cable plugged into the Mac at the exact moment that I am turning the external drive on. I'm using a two-drive USB hard disk case. I ordered this Seagate Portable 1TB External Hard Drive HDD - USB 3.0, from Amazon Prime. The price was good and the drive came the same day. I connected the hard drive to our iMac 27', which recognized it with no problems. What I did not like was the Seagate Mac registration software (also has the same for Windows) on the hard drive. Mar 30, 2020 Click Browse my computer for driver software. Click Let me pick from a list of available drivers on my computer at the bottom. Select Generic USB Hub from the model list. Click on the Next button. Wait a few seconds. Click on the Close button when the drivers have been updated. Repeat the process for each Generic USB Hub listed. Jul 24, 2015 I have a 1TB Seagate Back up Plus external harddrive, and it wont show up in my Mac Pro. The Mac Pro is the 2006 Intel Xeon model running 10.6.8 Snow Leopard. The System requirements for the external HDD are snow leopard or higher, so I don't know why it isn't working.
If you do not need the data and the drive is still within warranty, you will want to have the drive replaced. Visit the Warranty and Replacements section on Seagate.com for further details. If you see Code 28 (this may work for others codes too, i.e. Code 43) then try the following: Close the window with the code. I have a 1tb Seagate external hard drive that I have had for a little while and it used to work fine, but my laptop is now not recognizing it when I plug it in. It has a usb and it has its own plug for power. I have not used it in a little while and wanted to transfer some files over (pictures, movies etc) and now my laptop is not recognizing it. Oct 31, 2013 Are you using the backup software that came with the drive? That may explain why it worked on 10.6 and not 10.8, though would not explain why it no longer works now. You could erase the contents of the drive in Disk Utility by reformating the Seagate drive to Mac OS Extended (journaled), making sure the partition map scheme is GUID.
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I was using it at school first and my computer froze so I shut down the computer and restarted without safely removing the hard drive, at first the PC wouldnt reboot because I had it still plugged in, after unplugging it and the PC loaded up, it did not recognize the hard drive anymore. I have tried it on several PCs including the one at home all using Windows 7 and none of them recognize it.
I tried all USB ports on my PC and none of them work, the light on the hard drive is ON so I know there is no connectivity issue. I tried several free/trial softwares even the ones by Seagate and none of them recognized the drive so I cannot use their tools for recovering files or detecting the hard drive.
When I check the Disk Management, it does not show there.
When I check the Device Manager, it does not show under USB controllers but it DOES show under Disk Drives... I also checked and the drive is up to date.
The Model is BUP Slim BK.
In my quick launch, the drive is recognized there and gives me the option to Eject it but it doesn't actually Eject it when I click on it, it either stop responding or does nothing... unless I manually unplug it.
EDIT: After a really long time, the Eject message says the device is already in use which is probably why it doesnt Safely eject.