This solution is specific to having upgraded win95 to 2000 >
Restart the computer with your Windows 95 Startup disk that contains the Sys.com file
.
At a command prompt, type
sys c: This command rewrites the Windows 95 boot code with accurate BPB-bios parameter block- information.
Restart the computer to Windows 95, and begin the Windows 2000 installation again.
after you run the sys c: command you could also boot to the Recovery Console, use the fixboot command
fixboot c: to rewrite the Windows 2000 boot code
Bty, don't use the win 2000 boot disk, the drivers on it alone will cause this error message on a 95 machine, even if you weren't attempting to upgrade to 2000