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FAT(32) media sometimes accessible, sometimes not -- strange solutionfound

Discussion in 'Windows XP' started by Percival P. Cassidy, Feb 15, 2010.

  1. Percival P. Cassidy

    Percival P. Cassidy Flightless Bird

    I wrote earlier of a problem on one machine with XP Home SP3. It would
    not read floppies of FAT32-formatted thumb drives that were readable on
    other machines. I could format a floppy on this machine, but DIR claimed
    that it did not have a recognizable file system. RMB -> Properties
    showed the file system as RAW.

    Now I find that this happens only if the machine is booted with no
    FAT32-formatted media attached. If I boot up with a FAT32-formatted
    external drive or thumb drive in place, it can read them and will
    continue to be able to read FAT(32) media even when the one(s) present
    at boot time has/have been detached.

    Is this behavior normal? If not, how do I remedy it?

    Perce
     
  2. Uwe Sieber

    Uwe Sieber Flightless Bird

    Re: FAT(32) media sometimes accessible, sometimes not -- strangesolution found

    Percival P. Cassidy wrote:
    > I wrote earlier of a problem on one machine with XP Home SP3. It would
    > not read floppies of FAT32-formatted thumb drives that were readable on
    > other machines. I could format a floppy on this machine, but DIR claimed
    > that it did not have a recognizable file system. RMB -> Properties
    > showed the file system as RAW.
    >
    > Now I find that this happens only if the machine is booted with no
    > FAT32-formatted media attached. If I boot up with a FAT32-formatted
    > external drive or thumb drive in place, it can read them and will
    > continue to be able to read FAT(32) media even when the one(s) present
    > at boot time has/have been detached.
    >
    > Is this behavior normal? If not, how do I remedy it?


    I have seen such reports before but I've never
    seen a cause or a solution. I have NTFS only
    computers without a floppy drive, and there is
    no problem with FAT formatted USB drives under
    XP SP2+SP3.

    Creating a very small FAT formatted partition on
    the internal drive and removing it's drive letter
    would be a cure.


    Uwe
     
  3. Percival P. Cassidy

    Percival P. Cassidy Flightless Bird

    Re: FAT(32) media sometimes accessible, sometimes not -- strangesolution found

    On 02/15/10 07:29 pm, I wrote:

    > I wrote earlier of a problem on one machine with XP Home SP3. It would
    > not read floppies of FAT32-formatted thumb drives that were readable on
    > other machines. I could format a floppy on this machine, but DIR claimed
    > that it did not have a recognizable file system. RMB -> Properties
    > showed the file system as RAW.
    >
    > Now I find that this happens only if the machine is booted with no
    > FAT32-formatted media attached. If I boot up with a FAT32-formatted
    > external drive or thumb drive in place, it can read them and will
    > continue to be able to read FAT(32) media even when the one(s) present
    > at boot time has/have been detached.
    >
    > Is this behavior normal? If not, how do I remedy it?


    OK, I think I found the real problem: the sptd.sys file left behind
    after an apparently incomplete uninstallation of Daemon Tools, a utility
    that allows an .iso file to be treated as a CD or DVD.

    I had to download the stand-alone Daemon Tools installer and select the
    Uninstall option. Running the uninstall process that had been installed
    along with the original installation apparently had not been entirely
    successful.

    Perce
     

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