here is the condition. i have 1 harddisk(40G) which partition into 2 drive(20G x 2). i want to format it so i boot it with xp cd. i want to delete both partition and do a new installation. whe i press 'L' to confirm delete it jup back to previous screen and the 2 partition still there. after that i try use 98 bootdisk to delete the partition. this time i manage to delete the partition(everything looks normal) but after i reboot and go in again that 2 partition come back again . so i try 3rd method. i put it as a slave harddisk and boot into another OS. i try format using disk management, but results show fail when close to 100%. so i try to delete all file and folders inside both partition, after i delete all and reboot again all file is still there, i wonder how this can happen and anyone know how to solve this problem?