Can I remove the EFI Partition from a non system disk?

  1. Posts : 8
    Windows 7

    Can I remove the EFI Partition from a non system disk?

    I have a drive that I want to use as a backup drive for a Windows 10 machine. The problem is the old drive has a boot partition on it that is making Windows 10 go nuts every time I plug it in. If I wait until after the machine boots and then plug it in via USB adapter then I can get to the files but I want to install it inside the machine permanently.

    A photo of the Disk Manager is below. How do I (or should I) remove that EFI System Partition? The Disk Manager won't let me do it.

    Can I remove the EFI Partition from a non system disk?-2015_08_17_15_15_58_computer_management.png
      My Computer

  2. Posts : 9
    Windows 10

    Download and install a partition tool.
    I generally use:
    MiniTool Partition Wizard Free
    for online maintenance.

    If that gives you a problem because it's in use or some such,
    MiniTool let's you create a bootablw USB or CD,
    so you can do offline maintenance.
    However, I've never used it.
    I use Gparted-live for my bootable offline partition maintenance.
    Anyway, boot from the CD and none of the drives will be in use
    so you should be able to delete it.

      My Computer

  3. Posts : 8
    Windows 7
    Thread Starter

    Do I risk any problems accessing the data on the other partitions on that drive if I remove that first EFI one?
      My Computer

  4. Posts : 9
    Windows 10

    No, on a non-boot drive, it's just another one of the 128 possible partitions you can have on that drive.
    The EFI partition is only special at boot time when booting off that drive on a machine with UEFI firmware, instead of the old BIOS-type firmware.

    Is your system set to boot off USB first, rather than the first SATA drive,
    such that it tries to boot from that drive when you do a reboot while it is plugged in?
    Is that what you mean by "go nuts".

      My Computer


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