Hard Drive issues after AHCI Mode

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GlossedOver

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Feb 10, 2016
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So here is what happened, I recently fixed my computer with a new hard drive and installed windows 10 from scratch, I did this while the bios was set to IDE mode, I then cloned my drive to my SSD since it came in the mail, I changed the bios to AHCI and it wouldn't boot, I fixed it for the SSD but I have the same exact clone on the SSD as the HDD, the SSD boots in AHCI but the HDD no longer boots and the computer asks for a bootable device, BUT its not the same inaccessible_boot_device error as when you first switch to AHCI and the computer doesn't boot. (The only reason why I have the hard drive is I want an exact copy of my SSD in case something happens)
Is there a way to fix this or do i have to reinstall windows in AHCI mode

Edit: The HDD version booted before I switched to AHCI mode and fixed the original boot issues with the inaccessible_boot_device issue
And the Drive came from a computer with UEFI Bios and the drive was working in AHCI mode in the old computer
 
Solution
Boogieman_WD
Hi there, GlossedOver.

Basically you could disconnect the SSD, change the SATA mode to IDE, to see if you'd be able to boot properly to Windows with the HDD and the IDE mode. If everything is OK, check the solution from this thread in order to switch to AHCI: http://www.tomshardware.co.uk/answers/id-2347183/change-ide-ahci-reinstall-windows.html. If everything goes well You should be able to boot to Windows with both the SSD or the HDD and the SATA mode set to AHCI.
However, this is not the best way to backup your system. I'd recommend that you consider making a system image instead: http://www.howtogeek.com/howto/4241/how-to-create-a-system-image-in-windows-7/. Or backup just your important files (photos, videos, documents, projects...
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Boogieman_WD

Boogieman_WD

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Jul 31, 2014
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Hi there, GlossedOver.

Basically you could disconnect the SSD, change the SATA mode to IDE, to see if you'd be able to boot properly to Windows with the HDD and the IDE mode. If everything is OK, check the solution from this thread in order to switch to AHCI: http://www.tomshardware.co.uk/answers/id-2347183/change-ide-ahci-reinstall-windows.html. If everything goes well You should be able to boot to Windows with both the SSD or the HDD and the SATA mode set to AHCI.
However, this is not the best way to backup your system. I'd recommend that you consider making a system image instead: http://www.howtogeek.com/howto/4241/how-to-create-a-system-image-in-windows-7/. Or backup just your important files (photos, videos, documents, projects, etc.) and if at some point the worst happens and you lose your drive, you'd still have a backup of your important files and you'd be able to make a fresh install of Windows on a new drive.

Hope that helps. Please let me know how it goes.
Boogieman_WD
 
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