Invalid Media type reading drive C

Updated: 10/30/2017 by Computer Hope

The hard drive does not have a valid format

Computer hard driveIf you are receiving this message when your computer boots it is likely that it is unable to read the format on the hard drive.

  1. Boot from a bootable floppy diskette
  2. Once at the A:\> Type C: and press enter.
  3. If you do not receive this error message type the below commands.

    A: <press enter>
    fdisk /mbr <press enter>
    Sys c: <press enter>
    Once you have received the message System Transferred, reboot the computer and your issue should be resolved.
  4. If you receive the same "Invalid Media type reading drive C:" error, the formatting of the disk is likely invalid. We recommend that you re-format the hard drive by typing the below command after booting from a bootable floppy diskette.

Format c: <press enter>

The above command erases all of your information on the hard drive, however, it will recreate the format and should allow your hard drive to be read again.

The hard drive has been partitioned but not formatted

If you have recently used fdisk to delete and recreate a partition on the hard drive, you must format the partition by typing the below command after booting from a bootable floppy diskette.

format c: <press enter>

The above command erases all of your information on the hard drive, however, it will recreate the format and should allow your hard drive to be read again.

If the hard drive was able to successfully format without any errors, install your operating system on the computer.

The hard drive is bad

If after following the above steps your hard drive is still unable to boot it is likely that the hard drive is bad.

Additional information