Tom is probably right - you need to do a low level format on those drives. Many computes have a low level format utility program built into the BIOS. Start the computer and do what it says to enter the Setup program. This will be some keystroke right after the power on memory test. Go through the BIOS Setup program until you get to either a drives or utilities menu. There should be an option to low level format the drives in there.

Once you do that, you'll have to fdisk the drives and format them. Be sure to have a bootable floppy with fdisk and format on it. Once you've done that, you should be able to use the disks. If you want to install Windows on one of them, you need to make sure your bootable floppy has the necessary drivers in the config.sys file so it can see your CD-ROM drive. Be sure to boot from the floppy and make sure you can see the CD-ROM before wiping out the drives.

I may be leaving out something. It has been quite a while since I low level formatted a drive.