After having installed GAG to multiboot 3 operating system, I've tried to enable the Hide Primary Partitions option, mainly to see how it works. Finally, I have changed my mind, as I want to see all partitions from all operation systems. I have therefore changed the Hide Primary Partitions to set it back to OFF, but no matter what I do, the Vista partition is always hidden from XP (but not from Mint.)
I have even tried to restore the original Vista bootloader (with which I can see all partitions), and then to re-install GAG, but no luck.
Seems that the option to hide the partitions is a one way process, and cannot be reverted to OFF.
I have 2 SATA discs, with this configuration:
Vista (disc 1, partition 1)
XP (disc 1, partition 2)
Several other data partitions on disc 1
A data partition (disc 2, partition 1)
Linux Mint (disc 2, partition 2)
Swap for Mint (disc 2, partition 3)
I have googled a bit, and I'm not alone with this problem. (Unfortunately, I can't find the URL now.)
I hope this important bug will be fixed.