9/2     Hi, my old PC can dual-boot between DOS (don't laugh) and NT.  It has
        quite a few NT apps installed.  Now if I install Win2k or XP onto the
        PC, will I be able to dual-boot between DOS, NT, and 2k or XP?  Does it
        matter if I install it on the same or different hard disk?  Also, will
        I have to re-install all the NT apps in order to run them in 2k or XP?
        Thanks.
        \_ It is possible to boot all those OS's but you should do backup first
           and practice on some other box first.  It's very easy to fuck it up.
        \_ If you 'upgrade' your NT to XP, then you don't need to reinstall
           all the apps, but you probably can't dual boot to NT anymore. If
           you installed XP on another partition, then you can dual boot to NT,
           but you probably need to reinstall all the software again. As for DOS,
           installing XP will override the current boot sector, which should be
           that of NT, your dos boot sector is in bootsec.dos (or something like
           that) and should continue to work.
           \_ Can the XP bootloader be configured to load DOS and NT
              partitions?
              \_ I think so, but they all want some files on C:, which is kind
                 of messy to deal with. If you really want to dual boot that
                 many OS, I've heard good things about VMware, or use the linux
                 boot loader.
        \_ I am a hardcore DOS fan and I havn't ran dos for years, what exactly
           do you need DOS for? My pentium system died a few years ago and I
           haven't ran dos since. What I do have is a nice boot disk containing
           lots of what use to be useful utilities for emergencies. But in the
           days of booting from CD directly, I havn't used it either. Just do
           a clean install of XP and you'll thank yourself. upgrading from a dual
           boot system of dos/NT is just not worth the trouble. If you really want
           a dos system, put it on a old machine.
           \_ I use DOS for exactly the same thing as you do - boot diskettes
              with utilities for emergencies.  So I need a hard disk that can
              boot DOS such that I'll able to make new boot diskettes when the
              old ones fade away and no longer boot.