Re: Usb key disapearing

flatline5 wrote:
What command did you use? Were you writing to /dev/sdb1 or 2, /dev/sdb,
or a file on the mounted usb drive? What does 'fdisk -l /dev/sdb' show?

Problem happened when the key was all one big fat32 partition, but it
also happened later with my new partition table.
So it has 2 partitions, partition 1 is a normal linux, made for ext2,
the 2nd partition is a "linux-raid-autodetect" that I wish to use in a
raid but I don't have plans for the "autodetect" part yet (i like to
boot from my regular os).

So i can mount sdb1 fine (if key is working) but i create an array
with sdb2 and mount the array instead.

The problem was that the whole key was unavailable suddenly, array
(linear) crashed and died, mount point for sdb1 was giving only I/O
errors. Stopping the raid and unmounting sdb1 made the devices
disapear in /dev... no way to remount...


Just had similar problems and found answers:

The answers I found won't necessarily solve your troubles, though...

1. It is recommended that we never partition any USB device with
multiple partitions. Thinking about this, I realized that I could
always see my 4 Gb partition but often not the huge second partition on
my USB thumb drive! (Cruzer brand, works great with Linux!)

Same thing on my large Firewire ieee1394 drives with multiple partitions!

Only have one partition on each USB or Firewire drive!

2. Having had problems on two of my main computers, and figuring, that
one being a FIC board and one being a Chaintech system, it couldn't be
the computer!

Then, other things started getting flakey, like the mouse started to be
erratic on both, and sudden lock ups happened in Fedora Core 5,
PCLinuxOS, and Mepis on those systems.

It was capacitor plague on both boards, and they were going erratic.
I got some very fine boards and PSUs from 3btech on the web, with free
shipping. I had found that 8 of my computers had bad caps in PSUs or on
mainboards.

Those damn Taiwan thieves stole the incomplete formula from the
Japanese, and are still selling the old stock of defective electrolytic
caps. Hey, I've changed caps on my Central Air conditioner twice in two
years, because of the $100 million "capacitor plague"!

Taiwan products suck more! Check out your computer Power Supply Units
and mainboards for swollen, lifted, cracked, leaking Taiwan capacitors.
On some, the plug in the bottom pushes down, lifting the cap off the board.






.

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