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Looked at many posts but did not find a solution: I wanted to replace the original m.2 PCIe Kingston 500GB drive with m.2 WD 4TB SN850X (both are m.2 PCIe), with the Acer PC having one m.2 slot and one PCIe 16 connector.

  1. Cloned disk with Acronis
  2. Replaced old disk with clone – no boot
    (UEFI firmware recognizes new drive - NVMe dev installed)
  3. Error code: Kernel security check failure
  4. After three unsuccessful boot attempts can get into Win rescue environment:
    Troubleshoot → Advanced Options → startup repair (no luck)
  5. Installed the clone on PCIe.
  6. Windows boots normally, all data intact
  7. UEFI firmware does NOT recognize SSD
    (NVMe Device NOT installed; First boot device: Win Boot Mgr)

At this stage I am stuck:

  • UEFI firmware does not recognize the SSD in the PCIe slot, yet Windows boots
  • When connecting that same SSD to m.2, I get error code: Kernel Security failure
  • Another strange thing: Leaving original SSD in M.2 slot, and adding the new SSD on PCIe, the system boots, and files show up on both drives; however, in this configuration Windows says that the new (larger) SSD is the boot drive!!?

With both drives installed, Windows boots, and it looks like it boots from the new drive which is not even recognized in the UEFI firmware.

Screenshot1 Screenshot2

JW0914
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captainron
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3 Answers3

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It may because the drivers of the old SSD and the new SSD are different. Install just 4TB SSD and boot your system using Windows installation media. After booting and click "Next", click "Repair your computer" at the bottom (Do not click on "Install Now") and perform a startup repair.

KAV00S
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You need to turn off 'secure boot' within the bios. Some bios require an admin password set in order to turn off. Once this 'feature' is switched off the new SSD should boot.

JohnnyVegas
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Just to tell about my problems with cloning a windows 11 laptop ssd. I had several issues and cloned disk would not show up on bios on several occasions.

For safety create a windows installation media on USB stick with media creation tool. Just incase you need to re-install or enter recovery.

So firstly decrypt the disk you're about to clone. Turn off bitlocker.

Turn off secure boot on your laptop bios.

Turn off trusted computing in your laptop bios.

Clone the ssd with cloning software. I used samsung data migration software and aomei backupper. You may need an external usb enclosure for your new ssd for cloning.

Preferrably do not clone the disk directly in windows if there is other option to use. Aomei offers possibility to use recovery environment to run the software.

Install the cloned ssd.

If it will not boot try booting into safe mode first.

Good luck... you need it.

Jari Levänen
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