I am a beginner but I have a DOS Start-up DISK. I'm in DOS trying to Format C: and it is telling me Invalid Drive Specification. I am running on Windows XP PLEASE HELPThe C: drive is probably FAT32 or NTFS which DOS does not recognize. If you are running WinXP from the C: drive, why are you trying to format the drive?

Let us know what you are trying to accomplish. Really bad virus, figured I might as well. Also its starting of in A:\> I figure I might need to change to C how would I do that?After booting from your startup disk, DOS will not recognize FAT32 or NTFS drives. If you really want to start over with a reformat, use your XP disks to start an install. You will be given the opportunity to format the C: drive. Make sure you back up any important (read: unreplaceable) DATA. You can save any important data to CD's or another drive or even a network drive. Have you used any tools to rid your system of of MALWARE and viruses? Reformatting the OS drive is a big step, keep in mind what you are doing.

Good luck. yes I've used everything as far as Anti-Virus etc. in Safe Mode. The virus makes it near impossible to operate under reg. windows. I will try what you've told me and I do appreciate the help.