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BCDEDIT: Will it help fix this mess?


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#1
ITgeekIT

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I'm working on an unbootable W7 computer.

The attached JPG shows what I see after I run a W7 Recovery disc and get Admin access to BCDEdit via the command line.

First puzzle is that the CMD screen is titled 'Administrator: x:windows\system32\cmd.exe'. Why 'X'? Also, the Command Prompt says 'x:windows\system32>'. Why not C?.

But the main problem is that if I remove the Repair Disc and reboot I get the message:
BOOTMGR is missing. Press Ctrl+Alt+Del to restart.

 BCDEdit.jpg

 

Anyone able to help with editing BCDEdit to solve this situation?

 

Thanks for reading :-)


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#2
Ztruker

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It's X because that is the drive letter assigned to the Recovery OS you are running. You get that when you boot the CD/DVD. You OS is going to be on C: or D: most likely.

 

Enter bcdedit and look at the osdevice line to see what it is. ENter exit to get out of bcdedit.

 

Enter chkdsk C: /f to run chkdsk against the boot drive. If it's not C: use the letter from the osdevice line. If chkdsk fixes anything run it again until it shows no error found.

 

See if that fixes the boot problem.

 

 


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#3
ITgeekIT

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Thanks, Ztruker. Didn't think of that explanation for the 'X' reference.

 

Re the osdevice line (image above), it's partition=C. So you reckon chkdsk /f can fix boot issues? OK, I'll try it.


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#4
ITgeekIT

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OK, I ran chkdsk c: /f and it found some minor problem regarding free space being incorrectly marked as allocated. Ran it again and it found no problems.

 

But rebooting still returned the 'Boot Manager is missing' message.

 

I thought I'd have to rebuild the Boot structure with some clever command like 'bootsect' or 'fixmybootproblemorelse' (or whatever)? No?


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#5
Ztruker

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Try running Startup repair: https://support.micr...n-us/kb/2622803


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