I don't know Macs well, but i don't think your PC will be able to read the drive. It will recognize it, but no MS Operating system has built-in support for the file system that the MAC OS's use. I think there is a program you can get to add some support, mainly for people who want to use an iPod between both a PC and MAC but don't want to use FAT32 for some reason, but I really don't know if it would accomplish what you want. It sounds like the best bet would be to replace the hard drive in the MAC, reinstall the OS and then hook up the dead hard drive to the MAC and see if you can access it that way.