Hmmmn, strange it sounds as if for whatever reason that as you boot win9x / Me with a command similar to this: then memdisk /win9x.img That your dos bootdisk can't see your drives At this point your MS-DOS disk has booted the PC,before you run the setup.exe command in DOS can you 'cd' to each one of your pc's drives (in effect can MSDOS see all your drives / partitions). If you can then in all likelihood you have made a mistake in editing your config.sys / autoexec.bat files. They should read like this: AUTOEXEC.BAT =================================================== EXT %RAMD%:\extract /y /e /l %RAMD%: ebd.cab > NUL echo The diagnostic tools were successfully loaded to drive %RAMD%. echo. LH %ramd%:\MSCDEX.EXE /D:mscd001 /L:%CDROM% echo. cls echo Now installing Windows 98 SE echo. echo Loading... path=%RAMD%:\;a:\;%CDROM%:\PATH TO WHEREVER ON DVD YOU PUT\98SE\ SETUP.EXE CONFIG.SYS =================================================== files=10 buffers=10 dos=high,umb stacks=9,256 lastdrive=z device=himem.sys /testmem:off device=oakcdrom.sys /D:mscd001 device=btdosm.sys device=flashpt.sys device=btcdrom.sys /D:mscd001 device=aspi2dos.sys device=aspi8dos.sys device=aspi4dos.sys device=aspi8u2.sys device=aspicd.sys /D:mscd001 devicehigh=ramdrive.sys /E 2048 Hope this helps Nickb834