1. Assuming your existing Windows 98 installation is still running, insert a floppy disk in the A: drive, double click on My Computer, right click on the A: drive icon and select format. Under Format Type select Full. This will wipe the floppy disk and format it complete with system files.
Once formatted, use Windows Explorer to copy the format.com file onto the floppy from the C:\WINDOWS\COMMAND sub-directory. Now boot up the computer on this newly created boot floppy disk, and at the command prompt type, format c: /q
2. A quick wipe of the hard disk doesn't check for bad blocks, whereas the full format would do. As far as the Windows 98 installation is concerned, the disk is empty.
3. The fdisk utility is used to create, erase and display partition information on the hard drive. If you wish you can use fdisk to wipe the partition, and then Windows will create a new one ahead of a fresh installation. If you want to use this option, use Windows Explorer to copy fdisk.exe to the floppy from the same location as above.
Boot up on the floppy as before, type fdisk then answer Y to any questions, and select menu item 3 to delete partition.
4. Larger partition refers to the size of disk and clusters. Earlier versions of the operating system (FAT16) imposed a partition limit of 2Gb which can be rather restrictive if your hard disk is bigger than this!
Hope that helps...
ROGER - G0AOZ.