I'm on mavericks and I am trying to delete a partition of an external hard drive. This is its schema
Partition1: 50GB "MavericksBackup": Bootable backup Partition2: 187GB "Home Data": Absolutely Empty Partition3: 12GB "Install OS X Mavericks": it contains only the bootable app to install Mavericks
Now I'm trying to Erase the Partition3 from Disk Utility and it fails with the following error:
The requested size change for the target disk or a related disk is too small. Please try a different disk or partition, or make a larger change.
What that even means?
I have tried to delete or resize also the Partiton2 and I get the same error.
I suspect the problem was created by
Carbon Copy Cleaner: I've used it to copy everything from my internal HD to Partition1 to make it bootable. At the beginning of the process a warning message told me that in order to make Partition1 bootable I also had to create a recovery partition. I let it handle it.
Now, in fact I don't see the Recovery HD partition from disk utility but if I launch
diskutil list I do get this (different) list of partition, including the Recovery one, not visible from Disk Utility:
/dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_HFS MvaricksBackup 49.9 GB disk1s2 3: Apple_Boot Recovery HD 650.0 MB disk1s3 4: Apple_HFS Home Data 187.3 GB disk1s4 5: Apple_HFS Install OS X Mavericks 11.6 GB disk1s5
Not sure how to solve this? I would really avoid to reformat the whole disk...
EDIT: I started the disk utility in debug mode with this terminal command
defaults write com.apple.DiskUtility DUDebugMenuEnabled 1 then
Debug menu and
Show Every Partition. This in fact shows the extra
Recovery HD partition but that didn't help me solving the problem.