[arpitt]

is that true that

" if we want to install 2 differ versions of same os like windows then we have to install letest one in c drive "

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Need them in separate partitions.
One version of Windows in one partition, the other in the other partition.
Bear in mind the version you're currently loading will be that Windows Drive C.
"Drive C" as such does not exist outside of Microsoft Windows/MS-DOS.

[Neil Jones]

Need them in separate partitions.
One version of Windows in one partition, the other in the other partition.
Bear in mind the version you're currently loading will be that Windows Drive C.
"Drive C" as such does not exist outside of Microsoft Windows/MS-DOS.

[Ztruker]

Microsoft Windows 2000, XP and probably Vista, require a C: drive. They absolutely have to write 3 files there, ntldr, ntdetect.com, boot.ini.

[Murray S.]

Howdy:

Not sure if I am reading your question right, but the oldest os should be installed first and then the newer os on a second hdd or partition.

So, if you are going to dual boot WinXP and Vista, then you install XP on the first partition/hdd and Vista on the second.

Murray