NT4 Boot Sector Overwritten with DOS

I have an NT4 workstation on a network with a dual boot option to DOS 6.21.  I wanted to upgrade DOS to 6.22 so I did a 'SYS C:' from the a: drive.  When I restarted PC I could not access NT.  I reboted NT workstation setup disk and asked for a repair.  I told it I did not have a repair disk & it told me it could not find NT operating system on HDD.  I then attempted repair using repair disk.  It seemed to work OK but when I reboted PC, it got half way through loading NT and then hangs.  I can still boot to DOS.
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akbAsked:
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DuboisPConnect With a Mentor Commented:
Try to install a fresh Windows NT in a different directory( ex : WINNT2) to rewrite boot sector.

After you can edit BOOT.INI file to remove entries for this second copy ant remove it
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j2Commented:
If a repair (and only check the "inspect startupfiles") doesnt work in this situation, the upgrade has messed with more then the boot sector, and you are screwed..
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akbAuthor Commented:
I have resolved this myself!  I reinstalled NT as an upgrade.  Even though it was already there, it asked me if I wanted to upgrade NT or format the disk.  I selected upgrade.  It kept all previous settings and worked!  Thanks for the help.
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