Windows 10: Boot from old SSD on new mother board. No boot devices found.

Discus and support Boot from old SSD on new mother board. No boot devices found. in Windows 10 Updates and Activation to solve the problem; Hello, I am trying to boot from an old m.2 SSD on my previous machine to a new motherboard. The new motherboard is an Asus x670, and when I boot, it... Discussion in 'Windows 10 Updates and Activation' started by Brian Charbonneau, Dec 2, 2022.

  1. BRIAN CHARBONNEAU
    Brian Charbonneau Win User

    Boot from old SSD on new mother board. No boot devices found.


    Hello, I am trying to boot from an old m.2 SSD on my previous machine to a new motherboard. The new motherboard is an Asus x670, and when I boot, it will find find the drives I say drives because it is also detecting my SATA HDD but that is only storage and not of boot concern to me but under the bootable drives it says none are detected. I have tried turning on CSM with both UEFI as well as UEFI/Legacy settings but when doing that my machine will no longer even boot to POST or BIOS.

    :)
     
    Brian Charbonneau, Dec 2, 2022
    #1
  2. FREDERIK LONG
    Frederik Long Win User

    New windows 10 installtion on New SSD - wont boot unless old SSD present

    It seems you installed Windows while the both SSDs were connected. This would have caused your current problem. Maybe it is sufficient to do this:

    1. Launch the Disk Manager.
    2. Right-click drive C:, then mark it as "active".
    3. Shut down Windows
    4. Open the BIOS and tell it that the new SSD is the primary boot device.
    5. Disconnect the old SSD.
    6. Boot up normally.

    If this does not work then you might have to do this:

    1. Disconnect the old SSD.
    2. Re-install Windows on the new SSD, using the Media Creation Tool.
     
    Frederik Long, Dec 2, 2022
    #2
  3. FRIENDSWOOD
    Friendswood Win User
    Unable to boot new SSD "Inaccessible Boot Device" error

    I recently upgraded my HP Laptop with a Crucial P5 Plus 500GB PCI 4.0 NVMe SSD from a 250GB SATA M.2. The cloning appears to have been successful ( I have an SSD enclosure and can access all the old data files in the new SSD when I run it as an external drive from another computer). The problem is that when installed , the new drive just won't boot and I get a "Inaccessible Boot Device" error. Not being sure if it was a HDW compatibility issue I tried and was able to successfully install and run Windows 11 in a separate volume on the new cloned Drive (which originally also has Windows 11 ) . Being a Newbie, is it possible to copy the "Boot files and/or drivers" to the new windows from the old windows on the same drive? I have a lot of programs and would prefer not to have to uninstall and reinstall. Any suggestions are most appreciated.
     
    Friendswood, Dec 2, 2022
    #3
  4. DAVEM121
    DaveM121 Win User

    Boot from old SSD on new mother board. No boot devices found.

    New SSD wont boot

    Hi John

    Boot into BIOS, is SATA Mode set to AHCI to enable booting from an SSD drive?

    Is the SSD drive set a top of the Boot Priority list?

    Did you try connecting that SSD to the SATA Port normally used by your old HDD?
     
    DaveM121, Dec 2, 2022
    #4
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Boot from old SSD on new mother board. No boot devices found.

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