I am working on upgrading the hard drive to a 1.2G WD. The BIOS is 8/23/93 AMI 486DX-66. I used the CMOS disk utility to format the drive (mistake?)and auto-detect which appeared to work OK.When I tryed to boot up the computer with the new hard drive installed it took several attempts before it read the DOS disk and started the install. The process then aborted and the message "NO ROM BASIC SYSTEM HALTED" appeared on the screen. I re-formatted the drive again and now when the system is booting it does one of two things. It gets right ot the point of "starting MS-DOS" and then automatically re-boots (in a sort of stuck loop) or it freezes.
I've tried to put back the old drive and re-set the CMOS for it's parameters, but no luck in getting this computer to boot. I've set the CMOS from A:, C: to C:, A: boot sequence with no change in results.
What am I missing??