I have recently acquired an old pc running 95 ... I decided to upgrade to 98 SE ..... to no avail ... it would not recognize a boot disk or the cd/rom drive ... so i decided to take the hard drive to another comp to install 98 se .. I fdisked, reformatted and installed in another machine ..... everything worked fine ... when i took it back to the other comp .... i booted and recieved a disk i/o error ..... the drive works .. and already has an operating system ... it will take a boot disk .... and the bios settings are correct ... i changed the battery on the board and still get the same message .... the cables work and are correctly connected .... any ideas ... i have been working on and off with this comp for about a week and would like to bring it back to life ...... any suggestions would be appreciated ....