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9176 Views 2 Replies Latest reply: Nov 24, 2007 1:54 PM by Wayne T
Currently Being ModeratedOct 29, 2007 7:30 PM (in response to Sean M)Try Erasing it first and see if that will solve the issue, if not try running Disk Repair. Also, if it is to have a cloned OS be sure to choose Partition/Option/GUID Partition Table.
JoeMac Pro 2.66 Ghz, Mac OS X (10.4.10), Scratch (RAID 0), PM G4 (10.3.9, PM 6500 (10.2.8)
Currently Being ModeratedNov 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:
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.orig g4 733, many others thru (the luvly) Macintels, New & old Macs, Wintels, MacIntels, other systems...