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Missing OS error after reboot??

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6 replies

by faisalmasood

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In our head office ee have NT4 server SP6, working as PDC with IIS4, MTS, SQL7, Exchange 5.5 installed & working. We have our web based application running on that platform.

I made the changes through PCanywhere 9.2 on that server. the scenario is:
I've changed the directoty of our site from ....wwwrooot/somefolder/app to ...wwwroot/app

Then I redeployed the MTS components. & registered them using regsvr32 from Run windows. Then I check the whole site on IE. It was working fine.

Afterdoing that Ive checked scanned the PC for missing patches using hfnetchk.exe

It showed me a list of missing patches. From those I Installed MS01-044. Then restared the macine.

But now the macinge is not booting up. Displaying error:

"Missing OS"

I want to know where is the mistake & how to resolve it. IS it a problem of boot.ini targeting wrong partition. Or some other boot files.

Plz suggest anything valuable but be quick. Ive no time.

6 replies

by maxwell edison

If you are receiving the Missing Operating System error message it is recommended that you follow the below steps to resolve the issue.

Using a write protected bootable diskette, boot from the diskette and type "sys c:" after pressing enter thisshould give you the message system transferred. Once this has been completed reboot the computer. If you get any other messages see our Boot disk page.

If the number one does not resolve your issue boot from the diskette again and at the prompt type "fdisk /mbr" and press enter this should just return you back to the prompt. Once back at the prompt reboot the computer.

Finally if one and two are unable to resolve you issue it is recommended that you boot from the boot diskette again andreinstall or format and reinstall the operating system again.

See this link:

http://www.computerhope.com/issues/ch000181.htm

(REMOVE SPACES from the pasted URL.)

for the further links mentioned in that article.

Good luck,

Maxwell

by timthetoolman

Hi,

Firstly, although you probably already know... dont try what Maxwell suggested. I have no idea what doing a "sys c:" will do to an ntfs drive but it certainly wont help and may cause lots of damage.

As a first step, I'd be using your emergency repair disk. Of course, if you dont have one ...tsk tsk... then you can try booting from the WinNT CD and doing a repair from that.

Failing all that, you may need to go back to the backup you made just before you started your changes.

I suggest that because its obvious that one of the patches has screwed something up and even if you get it to boot, who knows what other things are broken on it? Being a "work" machine, it should be "known correct" rather than "working, just"

If you didn't do a backup first...then persist. And good luck.

Cheers,
Tim.

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