I don't know much about this form.  This is the text the installer saved 
to my floppy disk:

Traceback (innermost last):
  File "/var/tmp/anaconda-7.0//usr/lib/anaconda/iw/progress_gui.py", line 
19, in run
    rc = self.todo.doInstall ()
  File "/var/tmp/anaconda-7.0//usr/lib/anaconda/todo.py", line 1428, in 
doInstall
    self.fstab.mountFilesystems (self.instPath)
  File "/var/tmp/anaconda-7.0//usr/lib/anaconda/fstab.py", line 697, in 
mountFilesystems
    raise SystemError, (errno, msg)
SystemError: (16, 'Device or resource busy')

Local variables in innermost frame:
size: 3020188
fsystem: ext2
self: <fstab.GuiFstab instance at 84b7a48>
msg: Device or resource busy
doFormat: 1
errno: 16
device: hda5
instPath: /mnt/sysimage
mntpoint: /usr

ToDo object:
(itodo
ToDo
p1
(dp2
S'method'
p3
(iimage
CdromInstallMethod
p4
(dp5
S'currentDisc'
p6
I1
sS'tree'
p7
S'/mnt/source'
sS'mntPoint'
p8
S'/mnt/sysimage'
p9
sS'device'
p10
S'hdc'
sS'progressWindow'
p11