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07-10-2012, 05:04 PM
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#1
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LQ Newbie
Registered: Jul 2012
Posts: 5
Rep: 
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How to fix MBR
Hi all,
can someone help me. While installing RHEL6, i forget to choose the option Primary Boot Option from external hard disk and now i am unable to boot my Windows Professional from my internal harddisk. Whenever I want to start my Windows, everytime I have to plug my external hardisk and then select Other option to start my windows. I think this is the problem of MBR but i don't know how to restore back to my internal hardisk. Also i don't have Windows prof CD/DVD. Please help me its so frustating to plug and take external hardisk everytime whenever n wherever i need to start my laptop(Dell).
Thanks
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07-10-2012, 05:12 PM
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#2
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Moderator
Registered: Dec 2009
Location: Germany
Distribution: Whatever fits the task best
Posts: 17,148
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Boot into Windows, start the Command line and launch the following commands:
For 2000/XP: For Vista/7:
Code:
bootrec.exe /fixmbr
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07-11-2012, 05:52 AM
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#3
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LQ Newbie
Registered: Jul 2012
Posts: 5
Original Poster
Rep: 
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Thanks TobiSGD,
I have tried all these options but there is a message "'bootrec.exe' is not recognized as an internal or external, operable program or batch file ". What is the next option i can try. Please help me.
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07-11-2012, 06:18 AM
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#4
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LQ Addict
Registered: Mar 2010
Location: Oakland,Ca
Distribution: wins7, Debian wheezy
Posts: 6,841
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Hirens bcd, has mini wins xp you can use the command console from it.
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07-11-2012, 07:24 AM
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#5
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Moderator
Registered: Dec 2009
Location: Germany
Distribution: Whatever fits the task best
Posts: 17,148
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Besides Hirens BootCD you can use your Windows DVD. Start from it, launch the terminal from the repair mode, use the same commands.
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07-11-2012, 08:01 AM
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#6
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LQ Newbie
Registered: Jul 2012
Posts: 5
Original Poster
Rep: 
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Actually i don't have Windows 7 Professional right now.
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07-11-2012, 08:22 AM
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#7
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Moderator
Registered: Dec 2009
Location: Germany
Distribution: Whatever fits the task best
Posts: 17,148
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It doesn't have to be a Windows 7 Professional, any Vista/7 DVD will do the job. You can download an evualation version of Windows 7 Enterprise here: http://technet.microsoft.com/en-us/evalcenter/cc442495
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07-11-2012, 11:51 AM
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#8
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Moderator
Registered: Mar 2008
Posts: 22,361
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Automated repair should fix it. Boot to the dvd. As TobiSGD says almost any real Windows dvd would work or parts of on a usb. A neighbor or friends should work to do repair.
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07-12-2012, 04:04 PM
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#9
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LQ Newbie
Registered: Jul 2012
Posts: 5
Original Poster
Rep: 
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Thanks to everyone for your valuable information and support.
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