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Old 03-11-2006, 09:58 AM   #1
ddu_
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Registered: Dec 2004
Distribution: Slackware
Posts: 114

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USB Flash drive


Hey all,

I searched through the forums and I know this has been talked about over and over but my problem seems to be unique.

I have a new Sandisk 512MB flash drive. It's formatted with FAT.
When I attempt to mount it using
mount /dev/sda1 /mnt/usb
I get this error: mount: you must specify the filesystem type

so, I attempt
mount -t vfat /dev/sda1 /mnt/usb OR mount -t msdos /dev/sda1 /mnt/usb

and I get this error:
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

so I check dmesg:

Device 08:01 not ready.
I/O error: dev 08:01, sector 0
FAT: unable to read boot sector
UMSDOS: msdos_read_super failed, mount aborted.
Device 08:01 not ready.
I/O error: dev 08:01, sector 0
FAT: unable to read boot sector
Device 08:01 not ready.
I/O error: dev 08:01, sector 0
FAT: unable to read boot sector


Just a little more info, I have an external 20GB USB drive with the FAT32 filesystem and am able to mount it no problem when I need to using mount /dev/sda1 /mnt/usb

Is the 512MB drive the problem?

Thanks for helping!
 
Old 03-11-2006, 10:28 AM   #2
GrueMaster
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Registered: Aug 2005
Location: Oregon
Distribution: Kubuntu.
Posts: 848

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I've seen this problem off and on with my Sandisk 256mb usb stick. I haven't figured out if it is kernel related, but I think it may be the usb-storage driver doesn't quite have the correct timings. On some distros I work with, it comes right up, others give me the same error some of the time.

Try removing the drive and waiting a few seconds, then reinsert it. Wait for the lights to stop flickering and check dmesg to see if it stabilized. Another thing to try, is reformating the drive on a windows system. HP has a usb stick formatting tool that works with this drive.

Good luck.
 
Old 03-11-2006, 01:39 PM   #3
ddu_
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Registered: Dec 2004
Distribution: Slackware
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Original Poster
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strangely enough, reformat to FAT in windows and reboot worked.
 
Old 03-11-2006, 07:13 PM   #4
GrueMaster
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Registered: Aug 2005
Location: Oregon
Distribution: Kubuntu.
Posts: 848

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Glad to hear it. There is something about Sandisk that isn't completely stable (at least in Linux). Not sure why.
 
  


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