So my computer got a nasty virus, and I decided to start anew with a fresh install of windows. There was some weird problem during the installation, and windows 2000 could not finish installing, and I had to exit. I then decided to just redo the partitions and format the drive. I didn't have a floppy drive installed so I booted off of a USB flash drive and ran fdisk to delete the partition on my hard drive, create a partition, and then set the partition to active. However, when I tried to run format.com, i got the "this program cannot be run in dos mode" error. I tweaked my flash drive a little bit by basically copying over all the files from a windows 98 bootable floppy onto my usb drive... when I treated booting off of the USB again, I got a "missing operating system" error. When I try booting off of the windows 2000 install cd, I get the same error. My friend let me use a floppy drive; when i hooked it up to the motherboard and everything and inserted the win 98 bootable floppy, I get the "missing operating system" error again. It seems like I can't format the drive until I get past these errors. Any help is appreciated, thanks.