Windows 10: Problem EFI partition

Discus and support Problem EFI partition in Windows 10 Support to solve the problem; So I just bought a new PC that came without an SSD. I placed one in it and installed the OS on it. I have two other drives on the system as well. The... Discussion in 'Windows 10 Support' started by Inexplix, Feb 19, 2017.

  1. Inexplix Win User

    Problem EFI partition


    So I just bought a new PC that came without an SSD. I placed one in it and installed the OS on it. I have two other drives on the system as well. The 2TB HDD that came with the PC and a 1TB external HDD connected through USB. I'm trying to clear the 2TB completely to use for backing up the C: drive and the external disk but there's an EFI partition that I cannot get rid of. Even using diskpart "delete partition override" or "clean" both fail. It's just bugging me because it is sitting right between two unallocated sections,causing a split in the available space on the drive. An image of this in disk management is attached.

    :)
     
    Inexplix, Feb 19, 2017
    #1

  2. Windows 10 1709 64bit, windows image restore to a new drive fails, error 0x80042302

    Right?

    Microsoft recommends that when partitioning a disk, the EFI system partition be the first partition on the disk. This is not a requirement of the EFI specification itself. On Windows XP 64-Bit Edition and later, access to the EFI system partition is obtained
    by running the command

    The EFI partition is formatted with the FAT file system.

    Try this with command prompt to create the first partition on the drive, then try to install image without formatting NTFS partition for 10 OS.

    Go here on how to create, mount/format the EFI partition

    EFI System Partition - ArchWiki
     
    seahawks65, Feb 19, 2017
    #2
  3. EFI partition delete issues and restoration

    If I delete the EFI partition accidentally in Windows 10, how do I setup or manage or restore the EFI partition?
     
    Kaushik Guha, Feb 19, 2017
    #3
  4. NavyLCDR New Member

    Problem EFI partition

    When you installed Windows 10 to the SSD, you still had the HDD connected as drive 0 and the UEFI firmware set to boot from it. Therefore, Windows used the EFI System partition on Drive 0 as the "system" partition that the computer boots from. What you should have done is connected the SSD to SATA port 1, left all other drives disconnected, install Windows 10, then connect the HDDs to SATA ports 2 and 3 and any DVD drives to port 4+.

    Notice this in step 2 of our tutorial for installing Windows 10:
    Windows 10 - Clean Install

    2. Temporarily disconnect all non OS hard drives until Windows installation has finished. This is to avoid Windows Setup from installing files on other hard drives by mistake.
     
    NavyLCDR, Feb 19, 2017
    #4
  5. Inexplix Win User
    So I assume that I need to reinstall with the hdd disconnected? Wouldn't be a big deal if so since it's only been a few hours with the only thing I have done is update Windows.
     
    Inexplix, Feb 19, 2017
    #5
  6. NavyLCDR New Member
    Yes, and physically connect the SSD to the lowest numbered SATA port.
     
    NavyLCDR, Apr 5, 2018
    #6
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Problem EFI partition

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