I have a laptop (belongs to a friend, actually) that does not boot. It had windows (vomit), but that crashed, so I'm trying to install ubuntu. I've traded out hard drives but still get a SQUASHFS error. Unable to read blocks of some sort. I don't know what that means. I can boot to DOS from a disk. I can't figure it out, and I'm pretty new to all of this. The disk I'm using for installation of ubuntu is good, it's the same one I used for my current computer.