GoFlex, GoFlex Desk, GoFlex Pro, GoFlex Slim, & GoFlex Turbo

[duffer6]

!!!!!Please dissregard the below solution link; the solution failed and the drive has subsequently ceased to function any longer!!!!!.

Seagate is this error an known issue with Mac OS Lion and the Seagate 3TB or 4TB Goflex drive. I am reading all over the net that Mac users are getting the same error listed below which shows up when you scan the Seagate HD using the Mac Apple disk utility. 

the partition map needs to be repaired because there's a problem with the efi system partition's file system

[Cantbecanit]

I would say it's spot on, both need efi to fully function, diskwizard is the best option if you don't have efi bios, that or format it GPT.

[duffer6]

All these are PC solutions not Mac.  Thanks for the suggestions though.  

[Cantbecanit]

Indeed, sorry I was batch answering at the time, not got any experience of a Mac, but someone else has PM'd me a similar problem, so when I get time I will have a look around for you to see what I can dig up.

[duffer6]

Thank you.  I am reading rumors that this maybe a MacOS Lion issue and that the pending 10.7.3 update maybe including a fix.  Until then I would like to keep this open as a possible issue.  I would assume that Seagate tested these drives under OS Lion10.7.2 (the current version of Lion) and did not see these issues so something is not right.  There are concerns all over the Apple Support forums with like  issues on both Seagate and WD drives at 3TB and larger. 

[duffer6 · Accepted solution]

First thank you for all your replies, very much appreciated. Second to let you know Apple released 10.7.3 Lion today, a full service upgrade to the Lion operating system. This update did in fact fix my issue 100%. I reformatted the drives (required to fix the issue) then backed up on one partition over 1TB of data without issue. For your technical notes I would have your support group note that for a drive that is 3TB on a mac or larger using Lion must be formatted using the Disk Utility under 10.7.3 and your users will have to backup whatever data that have on the drive prior to reformatting if still under 10.7.2 or older. This is the only way to resolve this issue. Thanks again for the support.

[STX_Monk]

duffer6 Thank you so much for posting this.  We appreciate you sharing it here and on Facebook with us.  It actually saved me from having to come to the forums and quote your post.  Gang, big Kudos to duffer6 on this one!

[duffer6]

Happy to help!!!

[duffer6]

Just as an FYI, the issue is back but presenting in a different way.  I am now getting an issue where a partitioned volume will unmount and become unreadable.  This has happened at least once to all three of the partitioned segements of the 4tb.  When the partition unmounts no software can repair it and my only option is to wipe the partition and start over.  Something is not right here.  I can't figure out if it is Mac OS X Lion 10.7.3 or if it is the GoFlex drive and software.  I see other threads where people who had volumes that were 2tb and under with GoFlex branding having the same issue as I am on their Macs.  So any insight you could give me would be great.

[duffer6]

Well sorry to share this news, the drive is dead.  I am getting errors left and right on this thing.  The drive dismounts then won't remount and is requiring me to wipe and start over again resulting in 100% loss of data.  I am not sure once again if this is the drive itself or if it is an issue with Lion 10.7.3.

Bummed to say the least because the drive looks to be an incrediable product but something is just not right.