Format C-Invalid disk error

By awg78ny
May 31, 2006
  1. I decided to format drive c without doing any research first and I wiped out everything from DOS before even thinking of creating a boot disk. After formatting, I restarted the computer and it showed me "Invalid disk Error. Press any key" I figured, the C drive is gone. I tried to use a boot up disk that I downloaded from but it's not reading the drives. I tried installing win98 again, but as I said, the drives don't work. Is my computer gone to hell for sure? Is there anything that I can do to rescue it?
  2. Rik

    Rik Banned Posts: 3,814

    Get to dos prompt with the boot disk and type sys c: .
    That will hopefully help.
  3. awg78ny

    awg78ny TS Rookie Topic Starter

    That's the problem, I don't get the prompt. I only get the Invalid disk error. Please press any key. And when I have tried to put in the disk, either floppy or CD, it won't read it. I know there's a solution to this problem, I just don't know what!
  4. Rik

    Rik Banned Posts: 3,814

    Sounds like you have nothing that is bootable or your boot order is incorrect in your bios. Your mobo manual will tell you how to check boot order. If the pc You are using right now has a floppy drive, put a blank in it, go to dos prompt (start menu run, type cmd for xp) and type sys a: then put it in the other pc and type sys c: if dos prompt comes up.
  5. awg78ny

    awg78ny TS Rookie Topic Starter

    I have windows 2000. When I went to DOS and typed sys a:, it showed me the following: 'sys' is not recognized as an internal or external command,
    operable program or batch file.
  6. Rik

    Rik Banned Posts: 3,814

    You will need to check your boot options in your bios.
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