I haven't developed a really good way to handle MBR cleanups in Linux. Working on learning that body of knowledge. In DOS, there are a couple of techniques.
Method 1: Relatively easy but might not work. If you have a DOS boot floppy diskette with FDISK on it, boot up with the floppy and run FDISK /MBR Method 2: Requires a download and unpacking of a shareware util but very effective. Go to http://www.jetico.com/ , select the "download center" link. You find links for two version of BC-Wipe: Windows and Unix/Linux. I have used the DOS util included in the Windows version but have not tried the Unix version yet. So my instructions are for the DOS version. It will work fin with a Linux ssytem as long you boot up with a DOS floppy. Download the Windows version. Un-zip it. You might have to run the install program on some Windows system. Look for a directory under the main BC-wipe dir that contains a file with name like bcwipepd.exe. That file is the DOS util. Copy it to a bootable DOS floppy and boot a system with a disk you want to wipe clean. I forget teh commenda but if you run the util with no command-line options, it will give the help info. Then run the command with the right switches. It does a very good disk wipe, cleaning off stuff that other utils can't reach.
