It's somewhat doubtful if editing boot.ini would work. Windows 7 uses the boot sector of the primary hard disk, not boot.ini. So it could well be that you have to reinstall it.
But you can try to edit boot.ini and see what happens. If you tell why you can't we might be able to help you. Success, however, is far from guaranteed.
Kees
Hallo,
I have two Hard Disk one 80GB and one 500GB. First one has 4 partitions and 2nd one has 5 partitions.
I have xp pro sp3 installed in 1st partition of 1st Hard Drive and Win 7 Ultimate RTM installed in 5th partition
of 2nd drive. The win7 was the default OS. Now due to some reasons I again install xp sp3 on the 1st partition of the 1st drive.
After that the dual booting option screen has disappeared. Also, I have lost windows 7 and cannot start it.
I have tried to edit boot.ini file but cannot insert the write line.The boot.ini file in xp is...
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect
Pls help me to edit the boot.ini file and insert the correct entry so that windows7 can be launched.
I have Intel dual core, 2 gb ram...
mrbarasat@gmail.com

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