NTLDR is missing while booting XP Pro from second HDD

Hi,
in my computer i had running two two OS C: Windows 2000 and D: Windows XP.
And due to some bad sector in C partition my C partition was dead. So now
when i boot my XP SP2 it takes very long to boot and was very slow.
So i decieded to buy new hard drive and installed new hard drive as Master
Windows Xp Pro SP2. Now my new hard drive works fine. But now when i try to
boot through my old hard drive's Xp it gives me this error message saying
"NTLDR is missing please press any key to continue" I don't know what is
wrong, what to do.
Pls help
Regards
.

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