[SOLVED] problem with dual boot ubuntu/w10 at GRUB: cannot load image

[pfelelep]

I am posting all the steps

1/ run the command sudo efibootmgr -c -L "Windows Boot Manager" -l "\EFI\Microsoft\Boot\bootmgfw.efi"

here is the result:

pfelelep@pfelelep-Inspiron-7559:~$ sudo efibootmgr -c -L "Windows Boot Manager" -l "\EFI\Microsoft\Boot\bootmgfw.efi"[sudo] password for pfelelep: 
BootOrder: 0000
Boot0003* Hard Drive    BBS(Floppy,,0x0)0000474f00004e4f97000000010000006f00480061007200640020004400720069007600650000000501090001000000007fff040002010c00d041030a0000000001010600001703120a000000ffff00007fff040001043e00ef47642dc93ba041ac194d51d01b4ce6340053003400310042004e004d00300030003400340032003100350020005400200020002000200000007fff04000000424f
Boot0000* Windows Boot Manager    HD(1,GPT,02efc03c-0d0c-43a9-966e-a6ad53c9edc5,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)

I am rebooting now

[pfelelep]

reboot brought me straight to windows (no grub)

2/ I check the power options, no fast boot activated:


3/ but the hiberfil.sys file is present here, I will turn the hibernation option OFF and delete it.



4/ I am running a chkdsk now from command prompt.

C:\windows\system32>chkdsk
The type of the file system is NTFS.
Volume label is OS.


WARNING!  /F parameter not specified.
Running CHKDSK in read-only mode.


Stage 1: Examining basic file system structure ...
  1238784 file records processed.
File verification completed.
 Phase duration (File record verification): 12.61 seconds.
  22556 large file records processed.
 Phase duration (Orphan file record recovery): 0.00 milliseconds.
  0 bad file records processed.
 Phase duration (Bad file record checking): 0.50 milliseconds.


Stage 2: Examining file name linkage ...
  874 reparse records processed.
  1676434 index entries processed.
Index verification completed.
 Phase duration (Index verification): 29.94 seconds.
  0 unindexed files scanned.
 Phase duration (Orphan reconnection): 14.29 seconds.
  0 unindexed files recovered to lost and found.
 Phase duration (Orphan recovery to lost and found): 1.32 milliseconds.
  874 reparse records processed.
 Phase duration (Reparse point and Object ID verification): 12.83 milliseconds.


Stage 3: Examining security descriptors ...
Security descriptor verification completed.
 Phase duration (Security descriptor verification): 34.31 milliseconds.
  218826 data files processed.
 Phase duration (Data attribute verification): 2.04 milliseconds.
CHKDSK is verifying Usn Journal...
  38276440 USN bytes processed.
Usn Journal verification completed.
 Phase duration (USN journal verification): 246.37 milliseconds.


Windows has scanned the file system and found no problems.
No further action is required.


 210576268 KB total disk space.
 159598896 KB in 612640 files.
    479444 KB in 218827 indexes.
         0 KB in bad sectors.
   1351944 KB in use by the system.
     65536 KB occupied by the log file.
  49145984 KB available on disk.


      4096 bytes in each allocation unit.
  52644067 total allocation units on disk.
  12286496 allocation units available on disk.
Total duration: 57.16 seconds (57168 ms).

no problem here either.

[tea for one]

I am posting all the steps
1/ run the command sudo efibootmgr -c -L "Windows Boot Manager" -l "\EFI\Microsoft\Boot\bootmgfw.efi"

here is the result:

pfelelep@pfelelep-Inspiron-7559:~$ sudo efibootmgr -c -L "Windows Boot Manager" -l "\EFI\Microsoft\Boot\bootmgfw.efi"[sudo] password for pfelelep: 
BootOrder: 0000
Boot0003* Hard Drive    BBS(Floppy,,0x0)0000474f00004e4f97000000010000006f00480061007200640020004400720069007600650000000501090001000000007fff040002010c00d041030a0000000001010600001703120a000000ffff00007fff040001043e00ef47642dc93ba041ac194d51d01b4ce6340053003400310042004e004d00300030003400340032003100350020005400200020002000200000007fff04000000424f
Boot0000* Windows Boot Manager    HD(1,GPT,02efc03c-0d0c-43a9-966e-a6ad53c9edc5,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)

I am rebooting now

Now, your efibootmgr does not have the Ubuntu entry, which you had in post 16.
Two suggestions:-
Can you boot Ubuntu from your PC boot menu?
Create an efibootmgr entry for Ubuntu?

[pfelelep]

Good Morning

so, I rebooted using the same way described in #post 9 (with the boot option F12 key)

I am back on Ubuntu now.

[pfelelep]

Now, booting into the UEFI menu > File Browser Add Boot Option > > Select...

• Ubuntu brings me GRUB.64.efi (not shown on the attached pictures, sorry)
• Boot brings me Boot.64.efi
• (the Manjaro entry is from an earlier distro I was using, I should clean that up)

Should I choose grubx64.efi or bootx64.efi?
I assume the question here is: should I add the GRUB entry or directly the Ubuntu entry... what will happen on the next update/ grub update?

[oldfred]

The bootx64.efi is seen as a drive entry.
The bootx64.efi is originally s a copy of Windows boot file, but installing grub normally copies shimx64.efi to /EFI/Boot/bootx64.efi. The drive entry or /EFI/Boot/bootx64.efi is a backup entry. The only way I can tell grubx64,shimx64, bootx64 & Windows bootmgfw.efi is by file size and which folder in ESP they are in.

I do not have UEFI Secure boot on, but it still uses shimx64.efi. Grubx64.efi only works with secure boot off, but shimx64.efi seems to work with UEFI secure boot on or off.

I thought Windows UEFI boot entry was always bootmgfw.efi as shown in your UEFI boot entry for Windows. It should also be in the /EFI/Microsoft folder in the ESP.

[yancek]

I'm guessing that your windows boot files are corrupted if you cannot boot with the windows entry you show in post 20. That is as it should be. Do you still get the same result trying to select that option? Seems pretty bizarre to me that when you created the ubuntu entry in your EFI windows disappeared and when you created the windows entry, ubuntu disappeared.

[pfelelep]

Do you still get the same result trying to select that option?

Yes, same result: cannot load image

Seems pretty bizarre to me that when you created the ubuntu entry in your EFI windows disappeared and when you created the windows entry, ubuntu disappeared.

Ubuntu (actually the GRUB loader was listed in the boot order entries (on the 4th entry), it is still named "windows boot manager" but it's the Grub! The Grub that cannot load W10
The FIRST "windows boot manager" entry is booting W10 normally.

[pfelelep]

now I am thinking,
since the windows boot entry manually added works (thanks to Oldfred) but the windows boot in grub entry seems corrupted...


should I try to run

if [ "${grub_platform}" == "efi" ]; then menuentry "Microsoft Windows 10 UEFI/GPT" { insmod part_gpt insmod fat insmod chain search --no-floppy --fs-uuid --set=root $hints_string $fs_uuid chainloader /EFI/Microsoft/Boot/bootmgfw.efi } fi

...according to this method?
https://unix.stackexchange.com/questions/746954/grub-broke-my-windows-boot-how-to-fix

I need your advice (sorry that it's taking so long, I really appreciate your help)

[tea for one]

Can you still boot into Ubuntu 24.10?
If so, please open a terminal and enter:-

efibootmgr

What do you see?