Untouchable disks via Disk Utility and GParted

Question

I have what I think are hybrid GUID/MBR disks that I created by splitting already MBR/NTFS disks via GParted, leaving unallocated space, then creating HFS partitions within OS X from the unallocated space on them.

I want to delete those HFS partitions and re-extend the NTFS on them, but I can't because GParted sees the disk as somehow unchangeable; I assume OS X has done something to them.

I now can't extend or do anything to the disks via the OS X Disk Utility OR GParted. What can I do?

Answer 1

I would try using a different utility. Either disk management in windows, or programs like partition management, adobe disk director, etc. I feel confident about the last one, as it has many features, but since the problem seems a tad ill defined, the others may work as well.