Skip navigation

TS1550: Mac OS X 10.5: Time Machine stops backing up to external disk

Learn about Mac OS X 10.5: Time Machine stops backing up to external disk

TS1550 What Happens When Disk Utility Cannot Unmount Disk?

645 Views 2 Replies Latest reply: Jan 12, 2013 2:28 PM by Katie \'OConnell RSS
Katie \'OConnell Level 1 Level 1 (15 points)
Currently Being Moderated
Jan 12, 2013 9:26 AM

I am having the problem mentioned in this article but the solution is not working for me since - when I follow all the steps and try to re-partition the external HD - I get the error message:

 

Partition Failed:

 

Particition failed with the error: Could not unmount disk.

 

Trying to reformat a BRAND NEW OWC external HD with 3TB of space, connect via Firewire 800.

 

Help!!

Mac Pro Xeon 64-bit Workstation, Mac OS X (10.6.8), 16 GB 1333 MHz DDR3

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.