Hi everybody, My parent's own a third hand Power PC G4, the Dual 1.25GHz version, with 2GB RAM running 10.4.11. I have it in my office whilst they are on holiday as I said I would see if I could get it running quicker for them. I have done the usual bits of repairing the disc permissions and using disc utility to repair the disk, but I have come up against a problem. Whenever you turn on the machine it comes up with 2 errors of "Disk not readable" which I can only assume relate to the two disc drives that it has ... even though there are no discs in them. I also have the same error when I plug in any external HD. Another thing is that it won't mount any .dmg files, saying that there are "no mountable file systems". The default app to open them is set to the DiskImageMounter.app I was thinking that I should just wipe the OS and re-install, but I want to back-up the data and applications first, but of course can't load any new software to do this as it won't mount a .dmg file. I have also tried making a new Admin user, but no disks will mount under this user either. Does anyone know why this may be happening and what I can do to fix this mounting issue, or is the machine dead in that sense? Thanks in advance.