My drive letters map to different disk partitions than I think they should. Whats going on?
Caveat: The following description assumes the use of Microsoft’s FDISK. The use of tools like Linux fdisk or Partition Magic changes a lot of the rules.) Microsoft uses the following strange algorithm to map drive letters to disk partitions: Look at the partition tables on BOTH PHYSICAL DISKS. First PRIMARY partition becomes Drive C: If there is a second PRIMARY partition it becomes Drive D: If there are no more PRIMARY partitions, look for EXTENDED partitions. The first logical drive in the first EXTENDED partition becomes drive E:, the next logical drive in that EXTENDED partition becomes F: etc. If there is another EXTENDED partition, the first logical drive in it becomes drive G:, the next logical drive in it becomes drive H: etc. Then, as device drivers are loaded, any disk drives they support will be assigned consecutive drive letters. CDROMs and other “Network drives” can be assigned specific drive letters if desired, leaving holes in the lettering scheme. Under MSDOS, Win 3.x a
