Eric; The most reliable option is to use the FAT32 file format. I am using it this way on my LAPTOP. I have 2 partitions of FAT32 and 2 of ext3 and 1 of RiserFS First partition of FAT32 has Window$ XP Media Center and second FAT32 (I named it tunnel) I use for sharing data between Window$ and Linux. 2 ext3 partitions have Ubuntu & Mepis while the RiserFS partition has OpenSUSE I have used this arrangement for quite a long time and the arrangement has not given any problem as all the Operating systems can read write to FAT32 without any issue. Regards Yagnesh