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Windows 7: Windows won't boot unless I use a different drive

18 Mar 2012   #11
gregrocker

 

If it booted when in Disk0 slot it may have stopped booting because when you moved it it was no longer set as first HD to boot. Check now in BIOS setup Boot order. Look also in the Boot order if there is a listing called EFI boot disk which may come into play here. I would move it back to Disk0 slot either way.

You have an EFI BIOS as evidenced by your 100mb EFI boot partition which is only issued when an EFI BIOS is present. This normally means you'll need to follow these special steps to correctly install Win7: UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

However it is possible to install to an MBR-formatted HD in an EFI BIOS by removing the EFI boot from BIOS Boot order during install. THere may be other special settings to achieve this in your BIOS. Go to the SUpport Downloads webpage for your model BIOS to read the Manual on this now.


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18 Mar 2012   #12
VanFinale

Windows 7 Professional x64
 
 

Okay so the EFI partition was made by my BIOS which I'm not using anymore unfortunately my MOBO malfunctioned so I had to send it away to get repaired/replaced. So should I just leave it as it is now, since I can still use my computer, until I get my proper MOBO back?
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18 Mar 2012   #13
gregrocker

 

Are you wanting to keep it the way that it is until you receive your EFI mobo back, then reinstall the HD as it was there? If so I wouldn't modify it.

See if you've formatted the HD with GPT instead of MBR. Click on the box to the left of the HD on Disk Mgmt. map to see what the options are. I don't know why you cannot mark it Active.

If you confirm it is MBR HD which is likely since it will boot off of the other HD's boot files, and you don't want to preserve it as is to work on the EFI mobo, then we can help you delete 100mb EFI partition and try to construct in it's place the System Reserved boot partition - by marking it Active then running Startup Repair from disk up to 3 separate times to write the System boot files to the Active partition.
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18 Mar 2012   #14
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

Well if you still have both drives plugged in, (in order to use the computer) The old hard drive is marked active and that`s probably why you can`t mark the new drive active. It can be marked active with the Partition Wizard Bootable cd. I would take the old hard drive out of the loop when you attempt this. But as you say wait til you get your replacement board, read up, make the partition wizard bootable disc, and read up some more, come back and we`ll be glad to help you out.

http://www.partitionwizard.com/parti...otable-cd.html
My System SpecsSystem Spec
18 Mar 2012   #15
gregrocker

 

Each HD should be able to mark at least one of it's partitions Active, but I concur with AddRAM that it's worth trying with PW CD to mark C Active as it sometimes will do what Disk Mgmt won't.

As long as the HD itself is initialized to be an MBR and not GPT disk then it should work to mark Active so that the System boot files can be written to the Active partition.
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18 Mar 2012   #16
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Pretty easy. Just move the bootmgr from the old drive to C: - a 2 minute operation. Forget the EFI partition. Bootmgr - Move to C:\ with EasyBCD
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18 Mar 2012   #17
gregrocker

 

I'd try whs's method first since it's easiest. Just install EasyBCD and move the System boot files if they will move. I'm not sure they will move to a partition which cannot be marked Active, though. But try.
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18 Mar 2012   #18
VanFinale

Windows 7 Professional x64
 
 

So should I try whs' method now or wait till I get my replacement MOBO?
My System SpecsSystem Spec
18 Mar 2012   #19
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Sure go for it. There is nothing to lose. It's no rocket science - 4 clicks total.
My System SpecsSystem Spec
18 Mar 2012   #20
gregrocker

 

It's up to you. You an wait for the replacement EFI mobo and try to replace everything exactly as it was, or you can try to make the HD bootable now to use on this system.
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 Windows won't boot unless I use a different drive




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