I've been trying to install Puppy on an old PIII machine. The only CD that I can find that won't give me a kernel panic is 2.17, which for this purpose is fine. I run the universal installer, and it does its thing and then quits. Then I try to install Grub, but the installer tells me to either unmount hda1, or to mount it read-write. I tried to unmount it with pmount, but the system insists that process 6488 has it tied up. I tried: