USB flash write protect

[William Park]

On Sat, Apr 09, 2005 at 03:18:36PM -0400, William Park wrote:
> On Sat, Apr 09, 2005 at 06:28:17PM +0000, Jason Shein wrote:
> > On April 9, 2005 05:25 pm, William Park wrote:
> > >     dd if=/dev/zero of=/dev/sda bs=512 count=1
> > >     fdisk /dev/sda      # partition it to your need
> > >     mkdosfs /dev/sdaX
> > >     mount /dev/sdaX /mnt/hd
> > 
> > Thats what I tried in the first place.
> > 
> > It always seems to work, but then when you try to mount it it returns:
> > 
> > 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
> > 
> > 
> > even when I specify the filesystem type.
> > 
> > Really funny thing I found out though. Just for kicks, I thought I
> > would try it on a WinXP machine. It says the filesystem is not
> > formatted, so would I like to format it. I select yes, then I watch in
> > amazement  as it starts to format the stick.
> > 10%...30%....60%...100%...120%..145%...ERROR -> huh? I think I have to
> > get a screenshot of this one.
> 
> Then, nuke the fucking thing...
>     
>     cat /dev/zero > /dev/sda

Or, 
    badblocks -wsv /dev/sda

>     mkdosfs -I /dev/sda
>     mount /dev/sda /mnt/hd
> 
> Note: use the whole device /dev/sda, rather than one of its partition.
> 
> -- 
> William Park <opengeometry-FFYn/CNdgSA at public.gmane.org>, Toronto, Canada
> Slackware Linux -- because it works.
> --
> The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
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-- 
William Park <opengeometry-FFYn/CNdgSA at public.gmane.org>, Toronto, Canada
Slackware Linux -- because it works.
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml