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Restoring Windows 7 on same volume as Windows 8

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I installed Windows 8 and through a series of events, my W7 will no longer boot. I have tried to repair with the installation disk and attempted every other remedy that I can find on the web. However, I do have a recent Acronis backup that I can restore. I have the following concerns.

My W7 installation is on partition 1 of the same disk where W8 is on partition 2. I attempted something like this once before with XP and W7 and ended up corrupting my W7 installation trying to restore XP.

Option 1:
Can I just restore either the whole disk or the Windows folder from my backup without harming the W8 installation?

Option 2:
I have an empty partition of 464 GB on another drive. Would it be safer to:
1. Unplug the drive where my existing Windows installations reside.
2. Restore my W7 backup to the empty drive.
3. Make that drive my boot drive in the BIOS.
4. Use EasyBCD to set up my dual boot to my W8 installation after I plug that drive back in.
5. Format the original W7 partition to clean it up. (Do I need to make inactive before formatting?)

Windows 8 is all that I have working right now and I don't want to disconnect myself completely.

Thanks for any help.

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Well, without any comments, I struck out on my own. I used option 2, but ran into a further mystery. When I restored to a completely different drive, without the trouble-making drive even connected, I still cannot boot into Windows 7. It appeared to restore, but wouldn't start. I tried to repair with the installation disk, but it reported that it was unable to repair the installation. That was my August 6 backup, so I tried again with my July 30 backup with worse results. Windows 7 installation disk reported errors and I ran chkdsk and it corrected a heap of stuff, though without any success in booting.

Question: should I do a full restore AND an MBR and track zero restore or should the full restore take care of the MBR and track zero?

I confess that I can't figure out what is going on and why I get similar results on a completely different drive and partition from the original boot disk.

If anyone has any wisdom to impart, It would be kindly received.

Hello Robert,

thank you for your question.

When recovering a system volume, you will need to select the disk's MBR if:
•    The operating system cannot boot.
•    The disk is new and does not have MBR.
•    You are recovering custom or non-Windows boot loaders (such as LILO and GRUB).
•    The disk geometry is different to that stored in the backup.
There are probably other times when you may need to recover the MBR, but the above are the most common.

Here you can find more information about it.

In case you need further assistance, I suggest you contacting Acronis Support, since we always provide free support for recovery issues.

Thank you.