Meat Plow wrote in :

On 19 Jun 2009 14:33:01 GMT, Jim Yanik wrote:

Meat Plow wrote in
:

On 18 Jun 2009 16:26:58 GMT, Jim Yanik wrote:

Meat Plow wrote in
:

On Wed, 17 Jun 2009 23:02:20 +0100, Baron
wrote:

wmson364 wrote:

I have a 2 gb Cruzer flash drive that is no longer recognized by
computers. I've tried it in several and they do not see it and
the LED does not flash. When it was last connected to a cpu, the
screen gave me a USB overcurrent message and now the drive no
longer works.

Its no longer under warranty so...
Does the circuit board have a "fuse" on it that could be blown?
I've looked it over and don't recognize one. There's a osc
crystal, a couple of IC's and several trans/caps/res units.

You might be lucky and a cap has gone SC. More often the controller
chip is dead.

Well one of the most common (non physical abuse) problem is
corruption of the file system since there is a unique read/write
algorithm used to spread the usage of the file system over the
entire flash memory.

but his drive is not even recognized by the PC.

It won't be if there is not a recognizable file system.

hard drives are recognized even if they are brand new and no file system.

Yep

other USB devices get recognized without "recognizable file systems".

Yep.

And your point is what? That if other USB devices and hard drives get
recognized as hardware with no file systems this should hold true for
everything you plug into a USB port?

I suppose that's the average assumption.


so when does a USB device NOT get recognized as hardware when plugged into
a USB port? How's that work??

(under Windows,not some other op system)

--
Jim Yanik
jyanik
at
kua.net