I had the same "BIOS(Block3) is damaged" error after trying the 10.10 live CD on my Toshiba Portege A100. Too many reports of this with Toshiba laptops to be just a coincidence.
I had the same "BIOS(Block3) is damaged" error after trying the 10.10 live CD on my Toshiba Portege A100. Too many reports of this with Toshiba laptops to be just a coincidence.