i am trying to install ubuntu on an older toshiba satellite l775 that has had its hard drive completely wiped with no OS on it and when i go to install ubuntu i get an I/O error at about 30% or so it is an i3 processor and a 500 gb hard drive.
There is several solutions for this. You could try a USB install or take out the hard drive and put it in another system with a cd rom, floppy, USB internet connection. If you can boot from USB your only problem is choosing a distribution. If the install fails try the live option and check the HD for errors. Create another USB to rule out a corrupt file or USB stick. If it is the HD check in the BIOS if the settings for the HD are correct.