Proper way to add a new disk in Ubuntu

[Thomas Beckett]

On Mon, 7 Feb 2005 09:18:40 -0500, John DeCarlo <johndecarlo at gmail.com> wrote:
> On Sat, 05 Feb 2005 15:37:19 +0100, Herman Bos <spacey at lichtsnel.nl> wrote:
> >
> > John DeCarlo wrote:
> 
> > >Went into fdisk and created a partition for the whole drive.  A few
> > >false starts when I forgot to say "sudo" first.  (Sort of like Simon
> > >Says.)
> > >
> > I always use cfdisk myself but if you created the partitions and wrote
> > the changes to disk this should be OK.
> 
> yes, we agree on this.
> 
> > >I now had an hdb1 on my system, but no /dev/hdb1 entry.   mkfs
> > >complained and wouldn't do anything.  I found that parted could format
> > >a partition, and it did an admirable job, although it only had ext2
> > >support that I could find (definitely not ext3).
> > >
> > I always format it like this:
> > sudo mkfs.ext3 /dev/hdb1
> 
> Which I explained above did not work.  I did exactly that, but since
> there was no actual file labeled /dev/hdb1 yet (although fdisk and
> parted recognize that the partition exists), mkfs would do nothing.
> 
> > >Of course, still no /dev/hdb1.  So I couldn't mount it, either.
> > >
> > If you really don't have /dev/hdb1 are you sure its partitioned correctly.
> > check with:
> > sudo cfdisk /dev/hdb
> > If this doesnt work check if the /dev/hdb shows up in 'dmesg'.
> 
> Yes, I did everything correctly.  I have done this many times in the
> past with other Linux systems.  There must be something specific to
> Ubuntu (or just something newer in general), like maybe 'hal', that
> makes the system act differently.
> 
> > Also check if the partition number really is hdb1 and not hdb5 or
> > something else.
> 
> Again, if you read my original post, it was hdb1.
> 
> > You should be able to mount your formatted partition like this:
> >
> > mount -t ext3 /dev/hdb1 /mnt/hd
> > (assuming the /mnt/hd directory exists)
> >
> > If you want to have it mounted at bootup you can add an entry in /etc/fstab
> 
> No, you didn't read carefully.  I already noted that 'mount' would not
> work, presumably because if you looked in /dev directory, there was
> only hdb, not hdb1.  Any utility that looked at the disk saw the
> proper partition and proper formatting.
> 
> > >I couldn't think of anything else to try, so I rebooted (boo, hiss).
> > >
> > >Of course this fixed everything and there was a /dev/hdb1 again.
> > >
> > >Any recommendations on what I *should* have done?  Should I have
> > >restarted hal or something?
> 
> > I hope I understood your problem correctly. :) This how I add a disk to
> > a system myself, maybe it helps.
> 
> No, unfortunately you misunderstood and repeated exactly what I tried
> that did not work.
> 
> Anyone else with real information?
> 
> Thanks.
> 
> John DeCarlo, My Views Are My Own
> 
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> 

You just needed to restart udev, not sure of the command to do it
though. Looking on google, and a post in a debian survival guide, i
think you can just do:

sudo restart udev

This will then set udev about rebuilding the /dev tree. Of course -
restarting the computer does this so the only difference is a minute
to reboot.

Tom


-- 

Q: How many freudians does it take to change a lightbulb?
A: Two - one to change the bulb - the other to hold the penis...

.... I mean ladder!!!