I have a 486 with a puny 40Mb of hard drive and decided to format it to clean it up. I made a start-up disk that included drivers for the CD Rom as I hope to reload windows from there. I run FDISK to check settings, then re-started, but now I cannot get past 'Invaid system disk
Replace the disk, and press any key'

Is there some key combination to get around this or where have I gone wrong?