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I cloned my drive. Then I wanted to select that as boot device, but it didn't show up in BIOS.

This forum post says it's because the MBR was not copied.

So how do I verify that the MBR was copied? In other words, how can I check that a disk is bootable in Windows 7?

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How did you clone the drive? Did you only clone the primary partition? A direct 1:1 on the drive should have copied the MBR. – Kruug Mar 1 '13 at 19:37
I clone the system partition only. Using acronis true image. – Jim Thio Mar 2 '13 at 12:29
Just cloning the system partition did not clone your MBR. – Kruug Mar 2 '13 at 20:33
up vote 4 down vote accepted

If the drive won't boot, there's something wrong with the MBR or it's not there, so that's your "verification". However, the command bootrec.exe /ScanOs should display the list of active records the MBR. If there are none, then again, it's either missing or corrupt.

Kruug's comment is correct in that if you improperly cloned the drive (for instance, only cloned one partition), then the MBR might not have copied. To successfully clone a bootable drive, you have to do a 1-to-1 clone, or use a tool that allows you to clone the MBR and selected partitions. Personally, I use Macrium Reflect.

As for repairing it, using a Windows boot disk:

  1. On the install Windows splash screen, click "Repair your computer"

    enter image description here

  2. After a short hardware scan, in the "System Recovery Options screen", click the bottom option for command prompt:

    enter image description here

  3. In the command prompt, enter the following commands (each should follow with an "Operation was successful"):

    bootrec.exe /FixMbr
    bootrec.exe /FixBoot

Source: Tom's Hardware

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If an editing guru could somehow figure out why the numbering in my post won't sequence, I'd appreciate it :) – Moses Mar 1 '13 at 21:57
I have 2 drives. Which drive will that fix? Should I cd to the ssd drive first? Also I want my ssd to be the new c. – Jim Thio Mar 2 '13 at 12:30
How to check if the hard disk already have MBR? – Jim Thio Mar 2 '13 at 16:41
@JimThio To be safe, you could temporarily remove the drive that doesn't have the operating system on it. – Moses Mar 5 '13 at 5:42
Actually I got everything working. I install windows and simply overwrite the new installation with previous system volume. Solve problem. – Jim Thio Mar 5 '13 at 7:26

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