Seagate 500GB recognised but not 2TB external hard drive

[jcdnguyen]

Hey guys and gals,

So I installed PB4 of Sierra this morning (Macbook Air 2012) but now I can't get one of my external hard drives to work.

When I connect my Seagate 500GB Slim (which I use for TM backups), Sierra recognises it no problem.

However, when I connect my Seagate 2TB Backup Plus, Sierra doesn't mount the drive. It is recognised in Disk Utility and I can select the greyed out drive but when I click 'Mount', nothing happens.

I've tried different USB ports, restarting, restarting with the 2TB drive attached but still nothing, I can't mount it. Checked Seagate's website but they don't offer drivers for download.

Any ideas? Help and information would be greatly appreciated.

John

 

[grahamperrin]

recognised in Disk Utility and I can select the greyed out drive but when I click 'Mount', nothing happens.

I have not tested this in Sierra but traditionally it can happen if an automated run of fsck_hfs(8) begins invisibly before you attempt to do things with Disk Utility.

Consider the following file:

/var/log/fsck_hfs.log

 

[jcdnguyen]

Hi grahamperrin,

Thanks for the recommendation. I've found the file but what I do from there?

 

[grahamperrin]

Does the word DIRTY appear anywhere in the file?

 

[jcdnguyen]

No, just lots of 'Filesystem clean'