I have a Maxtor 8 GB HD which had been infected by a virus, which placed some symbols in the partition label. The symbols could not be removed, so the partition could not be deleted. I wiped the drive with Active Killdisk in A:, in the side-bar of the Killdisk analysis window it said "invalid master boot record", so I used Testdisk to write a "classic MBR". I checked in Killdisk again & the "invalid master boot record" warning was gone. I then ran SpinRite Disk recovery on it, no errors showed up.
I tried to install WinXP Pro, it partitioned but would not Format the HD (the partition showed up as "Non DOS"). Using a DOS 6.22 Boot disk I created a Primary Active partition with Fdisk, taking up the whole drive. When I try to format the partition with the command: "format c:", I get the message "invalid drive specification". I checked in Fdisk & the info says "Non DOS Partition".
How can WinXP & Fdisk create a Non DOS Partition? what is the problem?