I was using my OS/2 Warp 4 CD as a test case for Parallels 2.1 for Windows; however, every time I try to install OS/2 Warp V4 under Windows XP SP2 as a guest, I get either a Format error (HPFS partitions) or, if I format the partition (or partitions) myself as FAT, I get a SYS1210 error, and the OS refuses to install. VERY frustrating. The VM settings are for 128 MB of RAM and a 2 GB HD, and I'm using the enhanced IDE drivers originally for installing Warp 4 on IBM ValuePoints. The host system is a P4 2.6C with 1 GB of RAM.