Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Partition Failed -- Could not unmount disk

I partitioned my external hard drive into two parts. Now I want to change it back to one partition (500 gb).

I backed up all the data.

When I use disk utility and try to re-partition to create one partition from the two existing partitions, I get the error message:

Partition failed
Could not unmount disk.

What am I doing wrong??

THANKS.

MacBook Pro 17" 100gb 2.16 ghz 2GB sdram, Mac OS X (10.4.7)

Posted on Oct 29, 2007 7:20 PM

Reply
2 replies

Nov 24, 2007 1:54 PM in response to Sean M

Sean M wrote:
I partitioned my external hard drive into two parts. Now I want to change it back to one partition (500 gb).

I backed up all the data.

When I use disk utility and try to re-partition to create one partition from the two existing partitions, I get the error message:

Partition failed
Could not unmount disk.


What are you booting from Sean ?

You could always startup with the external Off, runn DU then turn external ON.. and try.

Partition Failed -- Could not unmount disk

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.