[ubuntu-uk] External drive is stuck at read-only.

[Joshua Scotton]

On Tue, 2008-01-29 at 02:01 +0000, Tom Bamford wrote:
> Andrew Jenkins wrote: 
> > Daniel Davies wrote:
> >   
> > > Andrew Jenkins wrote:
> > >   
> > >     
> > > > <div class="moz-text-flowed" style="font-family: -moz-fixed">I've 
> > > > recently been playing with a NAS drive. To set
> > > > it up I had it connected as an external USB drive.
> > > > All was going well, fdisk, mkfs, etc. and I moved a
> > > > couple of Gb of files to it.
> > > > 
> > > > After I disconnected it and plugged it back into my
> > > > machine it suddenly decided to be a read-only file
> > > > system.  I remember a pen-drive of mine doing the
> > > > same thing and I ended up having to redo the mkfs to
> > > > cure it.  This isn't a problem with a 512Mb pen
> > > > drive but with a 500Gb drive with over 100Gb of files
> > > > already on there it's not really an option.
> > > > 
> > > > Any other answers?  I'm using Ubuntu 7.10 (Gnome).
> > > > 
> > > > Andy Jenkins.
> > > > 
> > > > 
> > > > </div>
> > > >     
> > > >       
> > > This could be to do with unmounting. Did you unmount the drives properly 
> > > before disconnecting them?
> > > Right click; Unmount device or Eject.
> > > Daniel Davies
> > > 
> > >   
> > >     
> > I'm pretty certain I did but then we all make mistakes.  If that's what 
> > caused it how
> > do I put it right (without a reformat that is)?
> > 
> > Andy.
> > 
> >   
> 
> What type of filesystem is on the disk? Running an fsck on the
> filesystem may cure the problem (an ext3 or reiser filesystem may have
> a corrupt/unclean journal which can be fixed at the possible cost of
> the last few files written to it). Moreso with larger drives, I've
> found that unmounting takes a long time when there are lots of
> unwritten data pending, if you don't allow it to complete the effects
> can be devastating.
> 
> Regards,
> Tom
> 
Hear, hear...
I find that when my usb drives go read-only, it's either nautilus
playing up or a small corruption on the drive.
In the first case I do `killall nautilus`, in the second I unmount the
drive and then do `fsck /dev/sdb1 -a` where sdb1 points to the read-only
partition

Regards,

Josh

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