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  1. #1
    ROG Enthusiast Array Baio73 PC Specs
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    CH HERO VII WiFi

    Hi there,
    Since I updated to BIOS v0804 in SATA Configuration tab my SDD NVMe has disappeared from the listed devices, before there were 2 MNVe slots listed, now just the empty one. The SSD is mentioned in the BOOT tab and the system works fine… did anyone come into this problem? Or am I missing some step?
    After the flash I resetted BIOS form the back button on the mobo.

    Baio

  2. #2
    ROG Guru: Orange Belt Array chevell65 PC Specs
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    chevell65's Avatar
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    Try the following steps to make your NVMe drive show up in bios. You can disregard the instructions to install Windows if it's already installed on the drive.

    1 - Make sure you unplug all SATA and USB drives, the M.2 drive has to be the only drive installed.

    2 - Go into the bios, under the boot tab there is an option for CSM, make sure it is disabled.

    3 - Click on secure boot option below and make sure it is set to other OS, Not windows UEFI.

    4 - Click on key management and clear secure boot keys.

    5 - Insert a USB memory stick with a UEFI bootable iso of Windows 10 on it, USB3 is quicker but USB2 works also. A Windows DVD won’t work unless you’ve created your own UEFI Bootable DVD.

    6 - Press F10 to save, exit and reboot.

    7 - Windows will now start installing to your NVME drive as it has its own NVME driver built in, I don't think this would work with previous versions.

    8 - When the PC reboots hit F2 to go back into the BIOS, you will see under boot priority that windows boot manager now lists your NVME drive.

    9 - Click on secure boot again but now set it to WIndows UEFI mode.

    10 - Click on key management and install default secure boot keys

    11 - Press F10 to save and exit and windows will finish the install.

    Once you have Windows up and running, shutdown the PC and reconnect your other SATA drives. Do not put anything on SATA port 1 as this is now reserved for the NVME drive.

    I would also recommend installing the Samsung NVME driver at this point to replace the Windows one.

    The background here is NVME SSDs do not appear within the BIOS until Windows creates the system partition with the EFI Boot Sector.

    Your M.2 SSD contains UEFI driver information within the firmware. By disabling the CSM module Windows will read and utilize the M.2-specific UEFI driver.

  3. #3
    ROG Enthusiast Array Baio73 PC Specs
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    Quote Originally Posted by chevell65 View Post
    Try the following steps to make your NVMe drive show up in bios. You can disregard the instructions to install Windows if it's already installed on the drive.

    1 - Make sure you unplug all SATA and USB drives, the M.2 drive has to be the only drive installed.

    2 - Go into the bios, under the boot tab there is an option for CSM, make sure it is disabled.

    3 - Click on secure boot option below and make sure it is set to other OS, Not windows UEFI.

    4 - Click on key management and clear secure boot keys.

    5 - Insert a USB memory stick with a UEFI bootable iso of Windows 10 on it, USB3 is quicker but USB2 works also. A Windows DVD won’t work unless you’ve created your own UEFI Bootable DVD.

    6 - Press F10 to save, exit and reboot.

    7 - Windows will now start installing to your NVME drive as it has its own NVME driver built in, I don't think this would work with previous versions.

    8 - When the PC reboots hit F2 to go back into the BIOS, you will see under boot priority that windows boot manager now lists your NVME drive.

    9 - Click on secure boot again but now set it to WIndows UEFI mode.

    10 - Click on key management and install default secure boot keys

    11 - Press F10 to save and exit and windows will finish the install.

    Once you have Windows up and running, shutdown the PC and reconnect your other SATA drives. Do not put anything on SATA port 1 as this is now reserved for the NVME drive.

    I would also recommend installing the Samsung NVME driver at this point to replace the Windows one.

    The background here is NVME SSDs do not appear within the BIOS until Windows creates the system partition with the EFI Boot Sector.

    Your M.2 SSD contains UEFI driver information within the firmware. By disabling the CSM module Windows will read and utilize the M.2-specific UEFI driver.
    THanks for your replay… but the answer is… why the NVMe SSD was listed before upgrading the BIOS and no listed after?
    When I flashed the new BIOS, Windows was already installed and functional.

    Baio

  4. #4
    ROG Enthusiast Array Baio73 PC Specs
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    Had some time and tried... I discovered I installed Windows in legacy mode, not UEFI.
    My SSD NVMe wasn’t new, but it was empty.

    Baio*

  5. #5
    ROG Enthusiast Array Baio73 PC Specs
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    Also tried to reinstall Windows 10 Pro 64bit in Legacy mode (all BIOS option ok for legacy), but still SSD NVMe does not appear in SATA Configuration Tab as before BIOS update… only the secondary NVMe slot (empty) il listed.

    Baio

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