Windows 10: how to know i have the boot EFI system partition?

Discus and support how to know i have the boot EFI system partition? in Windows 10 Software and Apps to solve the problem; Guys i want to know how to know i have the boot EFI system partition because im trying to dualboot my laptop with my own Windows 11 and Windows 8.1 on... Discussion in 'Windows 10 Software and Apps' started by GalaxyHCY HENRY, Feb 28, 2024.

  1. GALAXYHCY HENRY
    GalaxyHCY HENRY Win User

    how to know i have the boot EFI system partition?


    Guys i want to know how to know i have the boot EFI system partition because im trying to dualboot my laptop with my own Windows 11 and Windows 8.1 on UEFI.Any solutions here?

    :)
     
    GalaxyHCY HENRY, Feb 28, 2024
    #1
  2. RAMESH SRINIVASAN
    Ramesh Srinivasan Win User

    My EFI System and Recovery Partitions are on the wrong disk (Windows 10)

    Please boot into WinRE and do the following:

    1. Delete the EFI partition on disk 0
    2. Re-run the bcdboot command suggested earlier. Be sure to use the correct drive letter. You can determine the OS partition's drive-letter by running diskpart & list volume commands.

    Edit:

    "Volume Z" gave you two more options. If you don't mind having the EFI on disk 0, then all you need to do is delete the unwanted boot entries using msconfig.

    OTOH, if you want to have the EFI partition on Disk 2, then delete the EFI partition on Disk 0 and run the bcdboot command.
     
    Ramesh Srinivasan, Feb 28, 2024
    #2
  3. GALAXYHCY HENRY
    GalaxyHCY HENRY Win User
    how to know i have the boot EFI system partition?

    Guys i want to know how to know i have the boot EFI system partition because im trying to dualboot my laptop with my own Windows 11 and Windows 8.1 (on UEFI).

    Any solutions here?
     
    GalaxyHCY HENRY, Feb 28, 2024
    #3
  4. SALTGRASS
    Saltgrass Win User

    how to know i have the boot EFI system partition?

    UNMOUNTABLE_BOOT_VOLUME after creating new EFI System Partition

    I would probably have booted to a Windows install or recovery media to create the

    EFI system partition by using Diskpart and the create par efi command with any modifiers necessary to make it fit in the correct location.

    I know Linux can use a Microsoft EFI partition but I do know if Windows can use a Linux version.

    Yes, the bcd listing which shows the boot manager and OS loader.

    It may have been easier to use a third party partition manager to change the size of the EFI partition.

    If you might need it, here are the details of an EFI partition from Diskpart.

    Partition 2

    Type : c12a7328-f81f-11d2-ba4b-00a0c93ec93b

    Hidden : Yes

    Required: No

    Attrib : 0X8000000000000000

    Offset in Bytes: 524288000

    Volume ### Ltr Label Fs Type Size Status Info

    ---------- --- ----------- ----- ---------- ------- --------- --------

    * Volume 3 FAT32 Partition 99 MB Healthy System
     
    Saltgrass, Feb 28, 2024
    #4
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