Windows 10: EFI partition on wrong drive

Discus and support EFI partition on wrong drive in Windows 10 Drivers and Hardware to solve the problem; I have an SSD and an HDD. Windows is on the SSD but as you can see EFI and recovery partitions (there are two for some reason) are on the other drive.... Discussion in 'Windows 10 Drivers and Hardware' started by nickgian, Jan 24, 2021.

  1. nickgian Win User

    EFI partition on wrong drive


    I have an SSD and an HDD. Windows is on the SSD but as you can see EFI and recovery partitions (there are two for some reason) are on the other drive. I'm not sure if it's always been like that but after dual booting with ubuntu probably had something to do with it. I've deleted the dual boot and everything is working fine but I'll probably go back to dual boot some time and I wanna make sure that things will work, so: should I leave everything as is, move the EFI partition to the SSD or format both drives and do a clean install?
    Also, the SSD is MBR so if I formatted it I could also convert it to GPT, but is it worth the hassle?


    EFI partition on wrong drive [​IMG]

    :)
     
    nickgian, Jan 24, 2021
    #1
  2. trog100 Win User

    Move EFI partition

    its to enable win 10 to update to its anniversary edition.. it cant do this due to lack of C drive space i have had a quick try with the trial version of easus.. it didnt seem to be able to do what i want..

    i am assuming i cant just delete the efi partition but maybe i could.. as yet i havnt even figured out how to get into the bios of the thing.. maybe that should be my next step.. *Smile EFI partition on wrong drive :)

    diskpart could probably do it but figuring out how (it aint that user friendly) might be difficult without step by step instructions..

    trog
     
    trog100, Jan 24, 2021
    #2
  3. W1zzard Win User
    W7 Hard drive partition issue

    to get rid of that 100 meg windows partition that setup creates for you on a new install on a blank hdd:

    - press shift+f10 when on the partition management screen in setup <-- this opens a command prompt
    - diskpart <-- start the windows command line partition management tool
    - list disk <--- list the installed hdds in this computer for the next step
    - select disk 0 <- might have to replace 0 with the number of the correct disk
    - clean <-- this will erase all data on the disk you selected one step up- dont use the wrong disk!
    - create partition primary <- creates a primary partition taking up all space on the drive, adjust the command if necessary
    - exit, exit to exit diskpart and the command prompt
    - click refresh in partition manager and select your newly created partition and install to that
     
    W1zzard, Jan 24, 2021
    #3
  4. aptmusic9 Win User

    EFI partition on wrong drive

    EFI Partitions on wrong drive

    Hi,

    After removing an SSD (WEFI partition on wrong drive :) from my rig I discovered that my system would no longer boot and gave the error:

    NTDLL not found. Press CTRL+ALT+DEL to restart.

    I put the drive back and was able to boot. Attached is my disk management. I recently installed plugged in a new 4TB HDD, and I can see that it too, has had an EFI Partition now, presumably because I plugged it into Sata port 1(?)

    To be safe, I've used Windows to create a system image on drive Q: and a repair disk. The wizard said it backed up the EFI partition to drive Q as well.

    So my question is, what's the easiest solution here? Can I pull out all the drives and restore from the image onto a new SSD? Or is there an easier way using another method? I want to get all of the required boot stuff on to C:. Thanks!


    EFI partition on wrong drive [​IMG]
     
    aptmusic9, Jan 24, 2021
    #4
Thema:

EFI partition on wrong drive

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