EFI partition

Page 1 of 2 12 LastLast

  1. Posts : 62
    windows 10
       #1

    EFI partition


    Hello!
    Win 10 Home ver. 21H1.
    I have been getting my PC ready for Win11.
    I converted from MBR to GPT, but I had to shrink my C: partition before it would work.
    I think I misunderstood the instructions and shrunk it by 145GB instead of 200MB.
    When Windows created the EFI partition it did so right after the C: partition.
    I have been trying to move the EFI partition to some unallocated space.
    Unfortunately the program I have will not let me do it, however it has let me clone the partition at the end of the disk.
    If I now delete the original EFI partition will my PC boot from the clone without a problem.
    If so then I can resize my C: partition.
    Cheers,
    Colin
      My Computer

  2. SIW2's Avatar
    Posts : 2,115
    trying to install win10
       #2

    Do it from outside windows. Use bootable media. Then run startup repair
      My Computer


  3. Posts : 62
    windows 10
    Thread Starter
       #3

    Ok


    I'll try that.
    Cheers,
      My Computer

  4. NavyLCDR's Avatar
    Posts : 16,149
    Windows 10 Pro
       #4

    Let's take a look at your disk management....sounds like a mess!
    How to Post a Screenshot of Disk Management
      My Computer


  5. Posts : 62
    windows 10
    Thread Starter
       #5

    Screenshot


    EFI partition-image.png
    Here is a screenshot, partition 3 J: train simulator was originally part of c:
    Cheers,
      My Computer

  6. NavyLCDR's Avatar
    Posts : 16,149
    Windows 10 Pro
       #6

    So, why not just give the first EFI system partition a drive letter, let's say T:. Make sure it contains current boot information by running:
    Code:
    bcdboot C:\Windows /s T: /f UEFI
    Then delete the EFI system partition at the end of disk 0 and expand I: drive to fill the empty space?

    And which train simulator do you run? I prefer Train Sim World 2. Dovetail is definitely better, in my opinion, than Microsoft or Auran.
      My Computer



  7. Posts : 39,020
    windows 10 professional version 1607 build 14393.969 64 bit
       #7

    There are advantages to having the recovery partition immediately to the right of the windows drive.
    This allows dynamic expansion and contraction during upgrades (automatic failover).
    If there is an insufficient size of the recovery partition when it is not set up dynamically, a second recovery partition may appear during an upgrade.

    Code:
    The recovery tools should be in a separate partition than the Windows partition to support automatic failover
    and to support booting partitions encrypted with Windows BitLocker Drive Encryption.
    
    We recommend that you place this partition immediately after the Windows partition. This allows Windows to modify
    and recreate the partition later if future updates require a larger recovery image.

    https://docs.microsoft.com/en-us/win...ive-partitions
    Windows 10 Version 20H1 brings an important change in Windows Setup
    Microsoft appears to have fixed the Recovery Partition hell in Windows 10 - gHacks Tech News
    How to Delete Recovery Partition in Windows 10
      My Computer


  8. Posts : 62
    windows 10
    Thread Starter
       #8

    NavyLCDR,
    Thanks for the information.
    I gave the EFI partition the letter T: as suggested and EPM allowed me to move it.
    The only problem I have now is the partition shows in File Explorer, because EPM does not give the option to remove the letter.

    By the way I run TS2021 train simulator, I used to run BVE, but it was not compatible with Windows 10.
    Cheers.
      My Computer

  9. NavyLCDR's Avatar
    Posts : 16,149
    Windows 10 Pro
       #9

    Why did you need to move the EFI system partition?

    To remove drive letter:
    Code:
    diskpart
    select vol t
    remove letter t
    exit
    exit
      My Computer


  10. Posts : 62
    windows 10
    Thread Starter
       #10

    NavyLCDR,
    When I converted from MBR to GPT, I misunderstood the tutorial which I thought said shrink the C: partition to 200gb.
    I actually meant shrink the C: partition by 200mb. So when the conversion took place I then had about 300gb in the C: partition then the EFI partition followed by about 175gb of unallocated space. I didn't want an extra partition so if I could move the EFI partition the other side of the unallocated space everything would fine. Yesterday It wouldn't let me move EFI partition, so today I took your advice and gave it the letter T. Then EPM let me move it and reuse the 175gb in the C: partition.
    I shall now take your advice again and remover the T. Then hopefully all should be well.
    Cheers,
      My Computer


 
Page 1 of 2 12 LastLast

  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 05:10.
Find Us




Windows 10 Forums