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Thread: Leap 15.0 too small /boot/efi

  1. #11
    -G- NNTP User

    Default Re: Leap 15.0 too small /boot/efi

    On Mon, 04 Jun 2018 16:26:03 +0000, nrickert wrote:
    > I wrote:
    >> In the latest install I did (double boot machine), the installer
    >> complained that the /boot/efi partition was too small (it was 100MB,
    >> the installer asked for a minimum of 250MB) and if left as is, it was
    >> likely that the system would not boot.


    > You should have just continued with the install, and ignored the
    > message. I think there's still an open bug report on that message being
    > unnecessarily scary.


    Just a further comment. After fixing the dual boot, I checked and the /
    boot/efi partition with both leap 15 and win7 entries takes 92MB of
    space, so while ignoring the warning and sticking to the original 100MB
    configuration might have been OK in this instance, in the end it was
    perhaps a good idea to have increased its size, in case I want to try an
    additional OS/distribution on the same machine.

    Cheers
    -G-

  2. #12
    Join Date
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    Default Re: Leap 15.0 too small /boot/efi

    Quote Originally Posted by -G- View Post
    Just a further comment. After fixing the dual boot, I checked and the /
    boot/efi partition with both leap 15 and win7 entries takes 92MB of
    space, so while ignoring the warning and sticking to the original 100MB
    configuration might have been OK in this instance, in the end it was
    perhaps a good idea to have increased its size, in case I want to try an
    additional OS/distribution on the same machine.
    Fair enough.

    When I first installed Leap 15 into a virtual machine, it created an EFI partition of 33M. They later changed the installer to want 256M.

    As I understand it (based on bugzilla comments), part of the thinking was that the UEFI specification recomment FAT32 for the EFI partition, and apparently 33M is too small for FAT32 so it had to use FAT16. Usually FAT16 works, but it is possible that some computers only support FAT32. Apparently, 256M is the minimum size for FAT32.

    Checking on my main desktop, with Windows 8.1, the EFI partition is using around 25M for Windows and around 25M for Dell (the manufacturer, probably needed for recovery but never actually used by me). OpenSUSE is using around 18M, but that's because I have some backups of boot code there. Without those backups, it is more like 5M.

    Some linux distro (Solus and KaOS are two examples) put the kernel into the EFI partition. And once you do that, more space is needed.
    openSUSE Leap 15.1; KDE Plasma 5;
    testing Leap 15.2Alpha

  3. #13
    -G- NNTP User

    Default Re: Leap 15.0 too small /boot/efi

    > As I understand it (based on bugzilla comments), part of the thinking
    > was that the UEFI specification recomment FAT32 for the EFI partition,
    > and apparently 33M is too small for FAT32 so it had to use FAT16.
    > Usually FAT16 works, but it is possible that some computers only support
    > FAT32. Apparently, 256M is the minimum size for FAT32.
    >
    > Checking on my main desktop, with Windows 8.1, the EFI partition is
    > using around 25M for Windows and around 25M for Dell (the manufacturer,
    > probably needed for recovery but never actually used by me). OpenSUSE
    > is using around 18M, but that's because I have some backups of boot code
    > there. Without those backups, it is more like 5M.


    Hm... your post made me go again and check the sizes.
    I am sorry, I was looking at /boot size from Dolphin, and there is indeed
    92MB of stuff in there, but what I should have done is check /boot/efi.
    That partition contains only 22MB of files, so you were right all along
    and I could have ignored the original warning.

    boot/efi/EFI/Microsoft/ uses 17MB (win7)
    boot/efi/EFI/boot/ uses 1.5MB
    boot/efi/EFI/opensuse/ uses 3.4MB

    Thanks again,

    -G-

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