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Old 09-26-2009, 05:43 PM   #1
jsteel
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Registered: Mar 2007
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Is this USB flash drive dead?


Hi, I have a USB flash drive that has been working fine, but all of a sudden it has stopped working. The device just shows as /dev/sda without the partition sda1.

fdisk says -
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x92045b41.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)


cfdisk says -
Unknown partition table type
Do you wish to start with a zero table [y/N] ?


If I wipe everything and create a new partition, it looks OK until I exit (c)fdisk; sda1 still does not show and re-entering (c)fdisk shows the same errors (changes are lost).

Any ideas? Thanks.
 
Old 09-26-2009, 06:19 PM   #2
Mr-Bisquit
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Try it under another distro or knoppix. If the same message appears, it's toast.
 
Old 09-26-2009, 06:39 PM   #3
jsteel
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Same problem under a different distro.

I tried mknod /dev/sda1 b 3 1 and I can manually mount it, but I have to do this manually on every computer. Should sda1 not be 8 1? Only 3 1 works. Very weird.
 
Old 09-26-2009, 07:19 PM   #4
jiml8
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After you manually mount it, it works?

Then the flash drive is OK, but you need a udev rule that handles that particular drive. I had the same problem with a PNY drive; I made a udev rule for it.
 
Old 09-27-2009, 04:36 AM   #5
jsteel
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Yes it works then.

I'm planning on using this as a bootable drive on multiple computers but it's not detected; very annoying.
 
  


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