Re: /dev/fd0 is not a valid block device

From: Rick Stevens (rstevens_at_vitalstream.com)
Date: 04/09/04

  • Next message: Rick Stevens: "Re: dd if=* of=/dev/fd0 freezing my computer." 
    Date: Fri, 09 Apr 2004 14:44:24 -0700
To: For users of Fedora Core releases <fedora-list@redhat.com>

    Jeff Vian wrote:
    >
    >
    > James Kosin wrote:
    >
    >> -----BEGIN PGP SIGNED MESSAGE-----
    >> Hash: SHA1
    >>
    >> Rick Stevens wrote:
    >> <<-- snip -->>
    >>
    >> If you use fdformat to format the floppy in Linux, you still need to use
    >> mkfs to build a file system on the floppy. Otherwise, you will still
    >> get this error, even after the format.
    >>
    >> /dev/fd0 is only permitted if fdformat knows the format already or can
    >> find it out from the floppy.
    >>
    >> You can use mount /mnt/floppy to try again. Or better still, get a disk
    >> you know is good... and try mounting that.
    >>
    > If you use "/sbin/mkdosfs /dev/fd0" it will format the floppy as a dos
    > filesystem and check the lowlevel format at the same time. Use of
    > "/bin/fdformat" does the lowlevel format only and from the man page it
    > does require the use of "/dev/fd0H1440" or equivalent in order to know
    > how to do that format.
    >
    > However, if that disk has been used for some things (like making a linux
    > boot disk) it cannot be reformatted using mkdosfs and would have to be
    > reformatted with fdformat first.
    >
    > Bottom line - to do the low level format use fdformat, -- to make the
    > usable format use mkdosfs.

    "mformat a:" will also do a vfat format of a floppy.
    ----------------------------------------------------------------------
    - Rick Stevens, Senior Systems Engineer rstevens@vitalstream.com -
    - VitalStream, Inc. http://www.vitalstream.com -
    - -
    - Blech! ACKth! Ooop! -- Bill the Cat (Outland) -
    ---------------------------------------------------------------------- 

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