BEFORE STARTING THIS, MAKE YOURSELF A WINDOWS 98 START-UP DISK. start/control panel/add remove programs/startup disk tab/create windows 98 start up disk. (you might need it to get your cd rom to work once you have formatted)
drive d can be formatted from within windows by right clicking on drive d and choosing Format from the menu.
once done, follow Ironman556's advice.
windows will not let you format drive C while it is booted into windows, to format drive C, shutdown/restart in MSDOS then type format c:
press enter then accept the warnings.
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