How best to get an old BIOS to see the full size of a big drive

[Greg Brooks]

Hi all. quick "from the idiot's gallery" question here.

Got an extra machine with two 250 GB drives in it. Drive 1 has the OS
(Ubuntu server) and not much else. Drive 2 has a single partition (/media)
that holds subdirectories with a bazillion files I want occasional access to
via Samba.

Drive 1 seems to be showing up as the right size, but drive 2 looks to be
missing a solid 120GB.

My question: Any way to resize/repartition/re-something drive 2 without
losing all the data that's on there?

Df -h output below:

#df -h 
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/plattsburg-root
                      228G  1.3G  215G   1% /
varrun                252M  2.0M  250M   1% /var/run
varlock               252M     0  252M   0% /var/lock
udev                  252M   64K  252M   1% /dev
devshm                252M     0  252M   0% /dev/shm
/dev/sda1             236M   24M  200M  11% /boot
/dev/sdb1             126G   46G   75G  39% /media

Many thanks,
Greg