Dual Boot: my computer runs both Windows 2000 & XP. Recently the Win 2000 (2K) was fatally damaged by a virus. But running the repair ultility also broke WinXP- it just wouldn’t boot. So I gave up and installed a fresh copy of Win2K. Installing an older OS renders the newer one inaccessible. Today I am hugely relieved that there was a simple fix found on the web.
Problem: running the repair feature, (rather like installing a new OS in the wrong order) places two files in the root drive (normally C: )
NTDETECT.COM and NTDR
the Win2K version of these files is different to WinXP’s version and not forwards compatible.
Solution: Copy & paste the files from the Win XP installation disc and replace the ones in your boot drive.
After: it’s likely that you may need to edit the boot.ini file also.
Why be so bothered: my XP installation is not to hard to replace, nor is installing the various applications and games there. The big problem that would have takes all week is setting everything up, all those config files, plugins and the rest that make programmes work together properly.
Now, I’m off to test some of it.
This is where I got it from.
Micycle 
Hi
sorry to hear about your virus problems. I had a similar problem last year. My oldest son – bless him – hacked around my password and downloaded porn, games cheats and all kinds of odd things – it wasn’t me, honest – and infected my computer with a really nasty virus. Symantec managed to get rid of it after charging me nearly £80 but also deleted everything from my computer. I lost all my writing from word, music from itunes, everything. It’s still fragile. Now have a laptop that he’s banned from, with Vista and so far, no problems.
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