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Bootloader not showing up on dual-booting system (Windows 7 & Windows 8)

Last response: in Windows 8
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April 2, 2014 11:20:11 PM

I recently built myself a gaming rig and had thought it would be a good idea to install Windows 7 & 8.1 (8.1 for the latest Direct X and 7 for ensured compatibility with my existing programs). Both OS are Pro 64bit versions.

I installed Windows 7 first and then installed Windows 8.1. Both operating systems are on separate 240GB Samsung Extreme II SSDs. After installing 8.1, the bootloader will not show up. I'm stuck with Windows 8.1! How do I get the bootloader to show up so that I have access to both OS?
April 2, 2014 11:57:08 PM

Download EasyBCD and add Windows 7 to the boot list. Fairly straight forward GUI.
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April 3, 2014 12:44:44 AM

I actually just did that, but something's wrong. I'm getting an error message whenever I try to boot Windows 7. I'm not sure how to repair that in a dual-boot set-up.
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Related resources
a b $ Windows 7
a c 381 * Windows 8
April 3, 2014 12:50:52 AM

Mechonis said:
I actually just did that, but something's wrong. I'm getting an error message whenever I try to boot Windows 7. I'm not sure how to repair that in a dual-boot set-up.

You may have to physically disconnect the W8 Drive and troubleshoot the W7 install separately, use F8 to get you into CMD prompt...

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April 3, 2014 12:52:49 AM

Mechonis said:
I actually just did that, but something's wrong. I'm getting an error message whenever I try to boot Windows 7. I'm not sure how to repair that in a dual-boot set-up.


What error are you seeing?
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April 3, 2014 12:52:56 AM

dodger46 said:
Mechonis said:
I actually just did that, but something's wrong. I'm getting an error message whenever I try to boot Windows 7. I'm not sure how to repair that in a dual-boot set-up.

You may have to physically disconnect the W8 Drive and troubleshoot the W7 install separately, use F8 to get you into CMD prompt...

I'll try that and see what happens.

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April 3, 2014 1:09:24 AM

OK, so I unplugged all but the Windows 7 drive and Windows 7 booted up fine. Now I'm really lost on what the issue is.
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April 3, 2014 1:11:43 AM

techgeek said:
Mechonis said:
I actually just did that, but something's wrong. I'm getting an error message whenever I try to boot Windows 7. I'm not sure how to repair that in a dual-boot set-up.


What error are you seeing?

"Error: Windows failed to start. A recent hardware or software change might have caused the issue after you install Windows Updates."
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April 3, 2014 1:15:16 AM

When you added Windows 7 to the bootloader with EasyBCD, are you sure you were pointing it to the correct drive and partition?

Usually the first partition is a system recovery partition around a 100MB.
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April 3, 2014 1:35:17 AM

techgeek said:
When you added Windows 7 to the bootloader with EasyBCD, are you sure you were pointing it to the correct drive and partition?

Usually the first partition is a system recovery partition around a 100MB.

I just double checked and can confirm that the correct drive and partition are selected.

Additionally, I tried booting Windows 7 from the BIOS and it worked fine there too.

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April 3, 2014 1:45:10 AM

Try this. Swap SATA cables between drives so that Windows 7 boots first. Then run EasyBCD from it and add Windows 8 and see if that works any better.
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April 3, 2014 1:57:48 AM

techgeek said:
Try this. Swap SATA cables between drives so that Windows 7 boots first. Then run EasyBCD from it and add Windows 8 and see if that works any better.

Same error occurs.
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April 3, 2014 2:01:32 AM

That is odd, I've given this answer to pretty much the same question a half dozen times and its sorted out the problem everytime.
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April 3, 2014 2:03:07 AM

techgeek said:
That is odd, I've given this answer to pretty much the same question a half dozen times and its sorted out the problem everytime.

Look like I may be stuck using the BIOS to select my OS. Thank goodness Asus has a really nice BIOS! Still, this is less convenient than what I had hoped for.
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April 20, 2014 4:03:07 AM

Update: I recently had an issue with my graphics cards that ended up having me fix this issue anyway. While I was trying to sort out what was wrong with my GPU, I tried deleting Windows 7 and Windows 8 to do clean installs of each. This process didn't fix the GPU problem, turns our my practically new 780 Ti went belly up, but reinstalling both OS has fixed the bootloader issue. The mentioned GPU issue can be found here: http://www.tomshardware.com/answers/id-2105186/error-co...
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April 22, 2014 11:19:57 PM

Grad you got it all worked out, sorry it had to go to that extreme to get it sorted out though.
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!