Hello I recently got a beautiful PowerBook Duo 270c for about $25 and everything seems to be ok with the laptop. I got System 7.5.3 original floppy disks on eBay to format the drive and do a fresh OS install to this machine. I initialized the hard drive with the HD SC Setup 7.3.5 that comes in the Disk Tools Floppy. It took some time after I got this message that the disk did not complete the initialization process and now the disk won't mount on the desktop. Though the HD SC Setup app doesn't see the drive it points that there is a drive "untitled" that is uninitialized or that the partition map is no longer valid. The Hard drive seems to be running fine. and I have tried many times to repeat the process but still the drive doesn't show up. I tried a fix that many people claim to be the best... the "patched version" of the HD SC Setup 7.3.5 I tried two sources and still nothing. Disk frist aid doesn't see the hard drive either, so there is nothing to repair. I manage to make my floppies with my vintage Powerbook 3400 so it's rather easy for me to make floppies. I was thinking that probably I could use some other Hard Drive utilities like Like Lido 7.56 but the file is too large to fit on a 1.44 floppy with the System folder. I've been thinking of maybe booting the computer from a system 7.5 Network access disk and try to connect it to my powerbook 3400 via ADB to be able to use Lido 7.56. Does anyone know if this is possible? Do I have any other options to make this thing work? By the way, I'm not sure if the hard drive is the original Apple Hard Drive that came with this computer because the capacity that was shown was 80MB and according to other sources these models either came with a 160MB or 240MB Hard Drive. Please help!!