Windows 10: PCIE SSD not seen in the OS after converting boot Drive to GPT format and booting UFEI

Discus and support PCIE SSD not seen in the OS after converting boot Drive to GPT format and booting UFEI in Windows 10 Drivers and Hardware to solve the problem; I have a PCIE SSD it is seen both by the bios and the OS if I boot UFEI With CSM on off of a Disk initalized as MBR. If I run MBR2GPT and convert my... Discussion in 'Windows 10 Drivers and Hardware' started by Craig4, Jan 24, 2023.

  1. Craig4 Win User

    PCIE SSD not seen in the OS after converting boot Drive to GPT format and booting UFEI


    I have a PCIE SSD it is seen both by the bios and the OS if I boot UFEI With CSM on off of a Disk initalized as MBR. If I run MBR2GPT and convert my disk to GPT change my Boot to be now the windows bootloader and either leave CSM on or turn it off it doesn't seem to matter the state. The system will boot off the newly converted disk, and will see every other Drives in the System, both SATA attached spinning disk and SSD's Even the M.2 SSD however the PCIE M.2 SSD is not visible to the OS. If I go back into the firmware the UEFI Bios sees the PCIE M.2 SSD. I can also run the diagnostic and

    :)
     
    Craig4, Jan 24, 2023
    #1

  2. OS drive is formatted to GPT, but still can't boot in UEFI mode

    Pretty much the title, I formatted my SSD to GPT but I can only boot in legacy mode instead of UEFI. If I try to boot in UEFI it loads forever. If I boot in CSM it tries to repair it and I have to boot from hard drive. Then it tries to boot and gets a 0x000000f error. Then I restart and then it boots properly.

    my specs are

    1070ti

    32gb ram

    SanDisk Ultra 2 480gb

    Ryzen 5 2600

    MSI B450 Gaming Plus
     
    Evan123123, Jan 24, 2023
    #2
  3. skippy258 Win User
    What is a better format for HDD over 2TB Master boot with Win 7 OS RAID... GPT vs MBR?

    Hi all,
    I am going to be getting 2x SATA 3TB Toshiba SATA 6GB HDD and would like to know, what is a better format for my HDD over 2TB for master boot with win 7 OS RAID.... GPT or MBR?

    I know if I format in MBR it will only be 2.4TB and if I do it in GPT Basic I might get 2.6TB on the drive but is there benefits or down falls to MBR or GPT other then I will get a little more size on these drives to use.

    Thanks
     
    skippy258, Jan 24, 2023
    #3
  4. Mystere Win User

    PCIE SSD not seen in the OS after converting boot Drive to GPT format and booting UFEI

    Converting MBR to GPT for EFI boot?


    Sorry, I missed the first link. But no, converting it to GPT will not make it automatically an EFI boot. There is more to it, yes it may boot up, but won't be EFI.
     
    Mystere, Jan 24, 2023
    #4
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PCIE SSD not seen in the OS after converting boot Drive to GPT format and booting UFEI

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