text: You won't be able to access the winxp drive because it was formatted with NTFS.  Windows 98 can only "see" partitions formatted in FAT32.\n\nIt will work the other way around, because WinXP recognises and supports FAT32.\n\nYou might try replacing/restoring your HAL.dll file.   Windows XP is always the last operating system you install in a dual boot scenario.