i seem to remember an option in win2k to make a disk dynamic, iirc it claims to make the disk access faster but prevents other operating systems from seeing the disk. that'd be my guess
here we go - just copied from the disk management help
from microsoft help file
Dynamic volumes are a new feature of Windows 2000 and can only be created on dynamic disks. With dynamic disks, you are no longer restricted to four volumes per disk.
There are five types of dynamic volumes: simple, spanned, mirrored, striped, and RAID-5. Only computers running Windows 2000 can access dynamic volumes. You should create basic volumes, such as partitions or logical drives, on basic disks if you want computers running Windows NT 4.0 or earlier, Windows 98 or earlier, or MS-DOS to access these volumes.
Dynamic volumes are not supported on portable computers.
Mirrored and RAID-5 volumes are available only on computers running Windows 2000 Server. You can, however, use a computer running Windows 2000 Professional to create mirrored and RAID-5 volumes on a remote computer running Windows 2000 Server
so basically theyve gone and changed the partition table to something non-compatible with the rest of the world. so much for microsoft being backwards compatible, lol.
the help goes on to describe how to convert back into a basic disk, i dont know xp but if you fiddle about in control panel im sure you'll find the correct option.
Last edited by kev82; 10-06-2003 at 01:07 PM.