Remooving U3 from USB drive.
Rick Stevens
ricks at nerd.com
Mon Apr 27 20:59:28 UTC 2009
Beartooth wrote:
> On Sun, 26 Apr 2009 07:56:51 -0500, Aaron Konstam wrote:
>
>> A question which appeared on fedora-list recently was how to remove U#W
>> from a USB drive. I did not see a resolution until the following web
>> link:
>>
>> http://www.u3.com/uninstall
>
> I've been trying to do that, and have a long thread going at
>
> http://forum.eeeuser.com/viewforum.php?id=1
>
> called "How to wipe thumbdrives??"
>
> I've tried formatting under XP; under Gparted; under QTparted;
> and going as root to a mounted one and using rm & rmdir. *Some* of my
> thumbdrives now *seem* to be clear; and several do function as bootable
> media with other distros.
>
> Since those bootable drives are my chief current concern, I
> haven't been nearly so meticulous about tracking what I've done with
> which as I might; but i *think* I've picked up a joker in the deck.
>
> Afaict (and I mean what my .sig says), a given Fedora app may or
> may not always see this U3 foulness when looking at a given thumbdrive.
> Often Fedora will tell me a drive is empty, but show a pie chart with
> less than 100% available space -- and an open folder with ostensibly no
> contents.
>
> There is one post in that thread with a technique using dd; I
> haven't tried it yet, but probably will.
I have a couple of those buggers as well. I think the dd you're
thinking of is something like:
dd if=/dev/zero of=/dev/sdb bs=1M count=2048
or something like that...the idea being to write zeros to the entire
drive, wiping out its partition table and all.
It does NOT work on the SanDisk Cruzers. I ran the dd three times on
each, writing all 4GB of data to them (took forever!). Fired up fdisk
and it reported a gparted-type partition table on them. The partition
table should have been wiped out via the dd.
I then ran gparted itself. It did NOT complain about a missing
partition table (it should have), but it did say there were no defined
partitions. Whoopee. Yeah, no partitions, but a gparted-style
partition table that can't be done away with. Sheesh.
<snip>
> If I could find non SanDisk Cruzer thumbdrives here, I'd never
> buy another.
I now buy nothing but PNY or Apacer thumbdrives. If I'm in doubt and
if the package says that something's preloaded, I treat them like
toxic waste.
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