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Level 2

197 points

Seagate External HDD won't show up.

Hi.

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.

P.S. When I plug in the USB cable into the computer, the HDD starts to spin, but it never shows up in the finder or on the desktop. Also, this HDD works in my MacBook Pro, but not the Mac Pro.

If anyone has any useful information, that would be greatly appreciated.

Thank you.

Mac Pro, Mac OS X (10.6.8), Mac Pro 1,1

Posted on Apr 16, 2014 8:27 AM

Best reply

Pixie_0

Level 1

4 points

Posted on Feb 8, 2017 11:29 PM

Perhaps this is too late, but i wanted to put my solution here in case anyone else comes looking for this as i did.

My situation was the same, the drive was setup for Time Machine.

Suddenly it no longer mounted - although in a windows pc it also wouldn't mount but said in disk management that the drive was healthy.

I went into my Activity Monitor and saw that a process called fsck_hfs was running at 100%.

Ended this process in activity monitor and it threw out an error about time machine, but then the disk mounted.

Might help - might not - but it worked for me

View in context

144 replies

Jun 26, 2017 1:00 AM in response to alyssamcgilvery

The plug-your-computer-into-the-the-wall solution worked for me.

Jul 12, 2017 8:35 AM in response to gobsmacker

that really helped...I was having the same problem, and it now works like a charm after I erased and reformatted the drive. Thank you !

dk54100

Level 1

4 points

Jul 13, 2017 11:07 AM in response to heeheehaha

Thanks heeheehaha...incredibly that worked!!!

akbar883

Level 1

5 points

Nov 13, 2017 7:12 AM in response to Grant Bennet-Alder

Great Help.Thanks for the information!

b4tiri

Level 1

8 points

Dec 21, 2017 6:47 AM in response to gobsmacker

To gobsmacker...i cant seem to find "newly plugged in my drive". Please i really need your help.

Dec 21, 2017 2:22 PM in response to DisneyWorld

you could throw it in the freezer for about 30 minutes then try pluggin it in. Sometimes it works and sometimes it does not.

Feb 16, 2018 7:17 AM in response to Miss_SC

HELP, this has happened to me also saying that drive is full and I know its not. Also not showing up anywhere on my MacAir

Mar 6, 2018 10:50 AM in response to bdcs64

glad to be of some help

Mar 6, 2018 10:51 AM in response to b4tiri

restart your mac

Seagate External HDD won't show up.