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Thread: uefi boot not working

  1. #1

    Default uefi boot not working

    i've got a dell inspiron 14r that came with windows 8.1 installed. i managed to shrink the windows partition and get opensuse 13.1 installed and booting... until it stopped. the /EFI/opensuse directory in the efi partition, /dev/sda1, appears to be corrupted. attempting to list it gives me a screen full of garbage.

    i tried running grub2-mkconfig -o /boot/grub2/grub.cfg and grub2-install /dev/sda, but no joy. all i can boot is windows. the distribution media no longer have an option to boot an installed system.

    here's the layout of my disk. partitions 7,8 and 9 are swap. / and home.

    Code:
    #         Start          End    Size  Type            Name
     1         2048      1026047    500M  EFI System      EFI system partition
     2      1026048      1107967     40M  unknown         Basic data partition
     3      1107968      1370111    128M  Microsoft reser Microsoft reserved partition
     4      1370112      2373631    490M  Windows recover Basic data partition
     5      2373632    976539647  464.5G  Microsoft basic Basic data partition
     6   1936867328   1953523119      8G  Windows recover Microsoft recovery partition
     7    976539648    980752383      2G  Microsoft basic primary
     8    980752384   1022697471     20G  Microsoft basic primary
     9   1022697472   1936867327  435.9G  Microsoft basic primary

  2. #2
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    Default Re: uefi boot not working

    Quote Originally Posted by mtbf0 View Post
    i've got a dell inspiron 14r that came with windows 8.1 installed. i managed to shrink the windows partition and get opensuse 13.1 installed and booting... until it stopped. the /EFI/opensuse directory in the efi partition, /dev/sda1, appears to be corrupted. attempting to list it gives me a screen full of garbage.
    It is not completely clear what you did.

    Boot from the install media, into rescue mode. That should give you a command line.

    At the login prompt, enter: root

    That should log you in as root.

    Code:
    # mount /dev/sda1 /mnt
    If that gives an error message, then make a note of the message and post it in this thread. In that case, try again with:
    Code:
    # mount -o ro /dev/sda1 /mnt
    If you get it mounted, one way or the the other, then try:
    Code:
    # ls /mnt/EFI/opensuse
    and post the output here. You can write it down for later posting if you want. The output should be only a few files (maybe 5 files).

    You should then be able to use:
    Code:
    # shutdown -r now
    to reboot to Windows.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  3. #3

    Default Re: uefi boot not working

    thanks for the response.

    i am able to boot the install media. i am able to mount the efi partition. when i attempt to list the contents of /EFI/opensuse i get screens full of garbage characters.

    ls /mnt/EFI/opensuse | less

    indicates that there are 2158 lines of garbage. here are the first 23 of them...

    Code:
     <.><.>
    <.>
    <.>
    <.>
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.:
    <.
    =
    =.>
    =^D>^D:.<
    >
    >
    >
    furthermore, the opensuse directory looks to be ungodly large.

    Code:
    linux:/home/linux # ls -l /mnt/EFItotal 80
    drwxr-xr-x  2 root users  4096 Jan 21 09:41 Boot
    drwxr-xr-x  3 root users  4096 Jan 21 09:41 Microsoft
    drwxr-xr-x 88 root users 73728 May  3 13:56 opensuse
    linux:/home/linux #

  4. #4
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    Default Re: uefi boot not working

    Quote Originally Posted by mtbf0 View Post
    thanks for the response.

    i am able to boot the install media. i am able to mount the efi partition. when i attempt to list the contents of /EFI/opensuse i get screens full of garbage characters.
    Okay.

    If it mounted without error, then the file system should not be too corrupt.

    Maybe check:
    Code:
    # ls /mnt/EFI/Boot
    # ls /mnt/EFI/Microsoft
    # ls /mnt/EFI/Microsoft/Boot
    And what's the output from
    Code:
    # efibootmgr -v
    If you are hand-copying, then I don't care much about hexadecimal strings that might be there, so you can shorten those.

    It's bedtime here now, so it will be a few hours before I can respond again. You may need to reinstall grub2-efi, and you may need to do an "rm -rf" on that opensuse directory to clean up the mess. I'd like to see that additional output first.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  5. #5

    Default Re: uefi boot not working

    at you service.

    Code:
     linux:/home/linux # ls /mnt/EFI/Boot
    bootx64.efi
    linux:/home/linux # ls /mnt/EFI/Microsoft/
    Boot
    linux:/home/linux # ls /mnt/EFI/Microsoft/Boot/
    BCD           BOOTSTAT.DAT  en-US  hu-HU        nb-NO      ro-RO       tr-TR
    BCD.LOG       boot.stl      es-ES  it-IT        nl-NL      ru-RU       uk-UA
    BCD.LOG1      cs-CZ         et-EE  ja-JP        pl-PL      sk-SK       zh-CN
    BCD.LOG2      da-DK         fi-FI  ko-KR        pt-BR      sl-SI       zh-HK
    bg-BG         de-DE         Fonts  lt-LT        pt-PT      sr-Latn-CS  zh-TW
    bootmgfw.efi  el-GR         fr-FR  lv-LV        qps-ploc   sr-Latn-RS
    bootmgr.efi   en-GB         hr-HR  memtest.efi  Resources  sv-SE
    linux:/home/linux #
    and

    Code:
     linux:/home/linux # efibootmgr -vBootCurrent: 0006
    Timeout: 0 seconds
    BootOrder: 0001,0000,0004,0005,0006
    Boot0000* opensuse    HD(1,800,fa000,a62c2d34-7c51-4954-ae16-cd79a1c6931c)File(\EFI\opensuse\grubx64.efi)
    Boot0001* Windows Boot Manager    HD(1,800,fa000,a62c2d34-7c51-4954-ae16-cd79a1c6931c)File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
    Boot0004* UEFI: IP4 Realtek PCIe FE Family Controller    ACPI(a0341d0,0)PCI(1c,3)PCI(0,0)MAC(e0db55c16981,0)IPv4(0.0.0.0:0<->0.0.0.0:0,0, 0..BO
    Boot0005* UEFI: IP6 Realtek PCIe FE Family Controller    ACPI(a0341d0,0)PCI(1c,3)PCI(0,0)MAC(e0db55c16981,0)030d3c000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000..BO
    Boot0006* UEFI: PLDS DVD+/-RW DU-8A5LH    ACPI(a0341d0,0)PCI(1f,2)03120a000100ffff0000CD-ROM(1,3fd,4afae)..BO
    linux:/home/linux #
    weird. it appears that one of my recent attempts to fix things has changed my boot order.

    sweet dreams.

  6. #6
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    Default Re: uefi boot not working

    Quote Originally Posted by mtbf0 View Post
    weird. it appears that one of my recent attempts to fix things has changed my boot order.

    sweet dreams.
    That mostly looks good.

    So whatever damage there is to your EFI partition ("/dev/sda1"), it does not appear to have caused any problems for booting Windows.

    So we need to reinstall the boot setup for opensuse. But, since there's a mess in the "/EFI/opensuse" partition, we need to fix that. I'm a bit worried about using "rm -rf" to delete it all, in case there are some cross-linked files. So, we need to start by making sure of the integrity of the EFI partition.

    There are two possible ways of doing that.

    1. Boot to linux (rescue mode of install media); do not mount the partition. Instead, run
      Code:
      # fsck -t vfat /dev/sda1
    2. Do a CHKDSK in Windows.


    I think I would prefer to do the second of those, if possible. I have never tried what I will suggest. If it doesn't work, we can fall back to the linux way.

    In Windows 8.1, go to the disk manager. As I recall, right click at the bottom left corner and select "Computer Management", then select Disk manager (or whatever they call it).

    That should show your partitions. Then select (click) the EFI partition (should be the first), and see if you can assign it a drive letter. Let's say that you assign it drive X:

    If you can do that then, in an administrator command prompt, you should be able to do
    Code:
    CHKDSK X: /F
    If that works, you can then go back to Disk Manager, and unassign that drive letter.

    Once we are sure that the file system is clean, we can reinstall booting. I'll go through the steps of that, when I hear the results of the CHKDSK.

    If Windows refuse to assign a drive letter to the EFI partition, then the alternative is to do it the linux way.

    I would probably do:
    Code:
    # fsck -n -t vfat /dev/sda1
    That should just report errors and not fix them. Then, repeat without the "-n" if you want to actually fix them (not needed if there are no errors). You might be prompted for many answers. You could use "-y" in place of "-n" to automatically agree to all prompts. But I always hesitate to do that. If there are thousands of errors, it might be the best way. I'm hoping that it turns out that there are no errors or very few errors to fix.
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  7. #7

    Default Re: uefi boot not working

    okay, here's how windows sees the efi partition. ran a couple of directory listings to make sure i was looking at the right disk, then ran CHDK without the /F flag.

    Code:
    Microsoft Windows [Version 6.3.9600]
    (c) 2013 Microsoft Corporation. All rights reserved.
    
    C:\WINDOWS\system32>dir x:\
     Volume in drive X is ESP
     Volume Serial Number is AAAC-AD15
    
     Directory of x:\
    
    11/13/2013  06:59 PM    <DIR>          en-us
    03/31/2014  08:18 PM    <DIR>          EFI
                   0 File(s)              0 bytes
                   2 Dir(s)     485,900,288 bytes free
    
    C:\WINDOWS\system32>dir x:\EFI
     Volume in drive X is ESP
     Volume Serial Number is AAAC-AD15
    
     Directory of x:\EFI
    
    01/21/2014  09:41 AM    <DIR>          .
    01/21/2014  09:41 AM    <DIR>          ..
    01/21/2014  09:41 AM    <DIR>          Microsoft
    01/21/2014  09:41 AM    <DIR>          Boot
    05/03/2014  01:56 PM    <DIR>          opensuse
                   0 File(s)              0 bytes
                   5 Dir(s)     485,900,288 bytes free
    
    C:\WINDOWS\system32>dir x:\EFI\Microsoft
     Volume in drive X is ESP
     Volume Serial Number is AAAC-AD15
    
     Directory of x:\EFI\Microsoft
    
    01/21/2014  09:41 AM    <DIR>          .
    01/21/2014  09:41 AM    <DIR>          ..
    01/21/2014  09:41 AM    <DIR>          Boot
                   0 File(s)              0 bytes
                   3 Dir(s)     485,900,288 bytes free
    
    C:\WINDOWS\system32>dir x:\EFI\Microsoft\Boot
     Volume in drive X is ESP
     Volume Serial Number is AAAC-AD15
    
     Directory of x:\EFI\Microsoft\Boot
    
    01/21/2014  09:41 AM    <DIR>          .
    01/21/2014  09:41 AM    <DIR>          ..
    01/21/2014  09:41 AM    <DIR>          bg-BG
    01/21/2014  09:41 AM    <DIR>          cs-CZ
    01/21/2014  09:41 AM    <DIR>          da-DK
    01/21/2014  09:41 AM    <DIR>          de-DE
    01/21/2014  09:41 AM    <DIR>          el-GR
    01/21/2014  09:41 AM    <DIR>          en-GB
    01/21/2014  09:41 AM    <DIR>          en-US
    01/21/2014  09:41 AM    <DIR>          es-ES
    01/21/2014  09:41 AM    <DIR>          et-EE
    01/21/2014  09:41 AM    <DIR>          fi-FI
    01/21/2014  09:41 AM    <DIR>          fr-FR
    01/21/2014  09:41 AM    <DIR>          hr-HR
    01/21/2014  09:41 AM    <DIR>          hu-HU
    01/21/2014  09:41 AM    <DIR>          it-IT
    01/21/2014  09:41 AM    <DIR>          ja-JP
    01/21/2014  09:41 AM    <DIR>          ko-KR
    01/21/2014  09:41 AM    <DIR>          lt-LT
    01/21/2014  09:41 AM    <DIR>          lv-LV
    01/21/2014  09:41 AM    <DIR>          nb-NO
    01/21/2014  09:41 AM    <DIR>          nl-NL
    01/21/2014  09:41 AM    <DIR>          pl-PL
    01/21/2014  09:41 AM    <DIR>          pt-BR
    01/21/2014  09:41 AM    <DIR>          pt-PT
    01/21/2014  09:41 AM    <DIR>          qps-ploc
    01/21/2014  09:41 AM    <DIR>          ro-RO
    01/21/2014  09:41 AM    <DIR>          ru-RU
    01/21/2014  09:41 AM    <DIR>          sk-SK
    01/21/2014  09:41 AM    <DIR>          sl-SI
    01/21/2014  09:41 AM    <DIR>          sr-Latn-CS
    01/21/2014  09:41 AM    <DIR>          sr-Latn-RS
    01/21/2014  09:41 AM    <DIR>          sv-SE
    01/21/2014  09:41 AM    <DIR>          tr-TR
    01/21/2014  09:41 AM    <DIR>          uk-UA
    01/21/2014  09:41 AM    <DIR>          zh-CN
    01/21/2014  09:41 AM    <DIR>          zh-HK
    01/21/2014  09:41 AM    <DIR>          zh-TW
    01/21/2014  09:41 AM    <DIR>          Fonts
    01/21/2014  09:41 AM    <DIR>          Resources
    05/25/2014  09:28 AM            40,960 BCD
    06/18/2013  07:49 AM             4,247 boot.stl
    02/22/2014  08:44 AM         1,616,728 bootmgfw.efi
    02/22/2014  08:44 AM         1,613,656 bootmgr.efi
    02/22/2014  08:44 AM         1,500,504 memtest.efi
                   5 File(s)      4,776,095 bytes
                  40 Dir(s)     485,900,288 bytes free
    
    C:\WINDOWS\system32>dir x:\EFI\opensuse
     Volume in drive X is ESP
     Volume Serial Number is AAAC-AD15
    
     Directory of x:\EFI\opensuse
    
    01/20/1982  12:33 AM        70,583,362 >♦4♦
    The parameter is incorrect.
    ☻?ÿ          70,779,954 F♦8♦D♦@♦.8♦
    02/01/1982  12:33 AM        71,173,170
    01/24/1982  12:33 AM        70,255,677
    01/20/1982  12:34 AM        71,041,056 >♦.
    02/02/1982  12:33 AM         5,570,592 0♦
    01/28/1982  12:34 AM        70,385,696 c
    01/30/1982  12:34 AM         2,098,224 i
                   8 File(s)    431,887,731 bytes
                   0 Dir(s)     485,900,288 bytes free
    
    C:\WINDOWS\system32>CHKDSK X:
    The type of the file system is FAT32.
    The volume is in use by another process. Chkdsk
    might report errors when no corruption is present.
    Volume ESP created 1/21/2014 9:31 AM
    Volume Serial Number is AAAC-AD15
    Windows is verifying files and folders...
    Windows found errors on the disk, but will not fix them
    because disk checking was run without the /F (fix) parameter.
    Unrecoverable error in folder \EFI\opensuse.
    Convert folder to file (Y/N)? n
    File and folder verification is complete.
    Convert lost chains to files (Y/N)? n
    7323648 bytes of free disk space would be added.
    
    Windows has checked the file system and found problems.
    Run CHKDSK with the /F (fix) option to correct these.
    
      520,093,696 bytes total disk space.
          126,976 bytes in 6 hidden files.
          180,224 bytes in 44 folders.
       26,558,464 bytes in 122 files.
      485,900,288 bytes available on disk.
    
            4,096 bytes in each allocation unit.
          126,976 total allocation units on disk.
          118,628 allocation units available on disk.
    
    C:\WINDOWS\system32>
    so CHDK has offered to convert the corrupted directory into a regular file, and collect a bunch of unlinked blocks, (presumably the pieces of the lost files from opensuse), into files.

    should i then delete the newly created files, boot my recovery disk and go through the whole mount my suse file system, chroot, and grub2-install rigamarole?

    thanks, once again.

  8. #8
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    Default Re: uefi boot not working

    Quote Originally Posted by mtbf0 View Post
    so CHDK has offered to convert the corrupted directory into a regular file, and collect a bunch of unlinked blocks, (presumably the pieces of the lost files from opensuse), into files.

    should i then delete the newly created files, boot my recovery disk and go through the whole mount my suse file system, chroot, and grub2-install rigamarole?

    thanks, once again.
    Yes, that's what I would do.

    I'm still wondering how that happened.
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  9. #9

    Default Re: uefi boot not working

    Quote Originally Posted by nrickert View Post
    I'm still wondering how that happened.
    as am i. hadn't touched any of the system stuff. certainly not that partition. didn't even know it was there.

    anyway, here goes.

  10. #10
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    Default Re: uefi boot not working

    Quote Originally Posted by mtbf0 View Post
    as am i. hadn't touched any of the system stuff. certainly not that partition. didn't even know it was there.

    anyway, here goes.
    Could have been an electrical hiccup (such as a brown-out flash or a lightning spike in the area) while writing to the disk.
    "Take a Walk on a Sunny Day, Greet everyone along the way, and Make Somebody Smile, Today"
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