I can't boot on Ubuntu (24.04) after the last Windows Update (Windows 11 Home 24H2). I've searched for some answers suggesting to boot from a Boot-Repair Disk (which I did) and use the Boot-Repair, which didn't work. It didn't show the Recommended Repair button, just the Create a summary button. The summary is pasted below.
Edit 1: here's my disk's info. The first one is a 1TB HD where I keep video files, music, photos and some backups.
Disk sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk identifier: 6A5F387D-1D0F-46E2-85A8-7338FF130C00
Start End Sectors Size Type
sda1 2048 1953523711 1953521664 931.5G Microsoft basic data
This one is a SSD where I put the OS. Ubuntu is on sdb2
Disk sdb: 447.13 GiB, 480103981056 bytes, 937703088 sectors
Disk identifier: CCBC8B68-06A2-4022-845D-A6D301109D84
Start End Sectors Size Type
sdb1 2048 2203647 2201600 1G EFI System
sdb2 2203648 469952511 467748864 223G Linux filesystem
sdb3 469952512 469985279 32768 16M Microsoft reserved
sdb4 469985280 936294399 466309120 222.4G Microsoft basic data
sdb5 936294400 937699327 1404928 686M Windows recovery environment
Here's the summary. I updated the firmware using the zip file provided at Acer's website.
============================== Boot Info Summary ===============================
=> No boot loader is installed in the MBR of /dev/sda.
=> No boot loader is installed in the MBR of /dev/sdb.
=> Syslinux MBR (5.00 and higher) is installed in the MBR of /dev/sdc.
sda1: __________________________________________________________________________
File system: ntfs
Boot sector type: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sdb1: __________________________________________________________________________
File system:
Boot sector type: Unknown
Boot sector info:
sdb2: __________________________________________________________________________
File system:
Boot sector type: Unknown
Boot sector info:
sdb3: __________________________________________________________________________
File system:
Boot sector type: Unknown
Boot sector info:
sdb4: __________________________________________________________________________
File system:
Boot sector type: Unknown
Boot sector info:
sdc1: __________________________________________________________________________
File system: vfat
Boot sector type: SYSLINUX 6.04
Boot sector info: Syslinux looks at sector 32864 of /dev/sdc1 for its
second stage. The integrity check of Syslinux failed.
No errors found in the Boot Parameter Block.
Operating System:
Boot files: /boot/grub/grub.cfg /syslinux.cfg
/efi/boot/bootx64.efi /efi/boot/grubx64.efi
/efi/boot/mmx64.efi /ldlinux.sys
================================ 0 OS detected =================================
================================ Host/Hardware =================================
CPU architecture: 64-bit
Video: WhiskeyLake-U GT2 [UHD Graphics 620] from Intel Corporation
Live-session OS is Linuxmint 64-bit (Linux Mint 21.2, victoria, x86_64)
===================================== UEFI =====================================
BIOS/UEFI firmware: V1.16(1.16) from Insyde Corp.
The firmware is EFI-compatible, and is set in EFI-mode for this live-session.
SecureBoot disabled (confirmed by mokutil).
BootCurrent: 0000
Timeout: 0 seconds
BootOrder: 0001,0000,0002,2001,2002,2003
Boot0000* Linpus lite HD(1,MBR,0x95160,0x800,0x39cb7e0)/File(\EFI\Boot\grubx64.efi)RC
Boot0001* ubuntu HD(1,GPT,6efb32b7-15fc-4e5f-a1f0-f0e5b78fc2f0,0x800,0x219800)/File(\EFI\ubuntu\shimx64.efi)RC
Boot0002* Windows Boot Manager HD(1,GPT,6efb32b7-15fc-4e5f-a1f0-f0e5b78fc2f0,0x800,0x219800)/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.}...d................
Boot2001* EFI USB Device RC
Boot2002* EFI DVD/CDROM RC
Boot2003* EFI Network RC
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
sda : is-GPT, no-BIOSboot, has-noESP, not-usb, not-mmc, no-os, no-wind, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
sda1 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, end-after-100GB
sdb : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
Partitions info (2/3): _________________________________________________________
sda1 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, ntfs
sdb : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot,
Partitions info (3/3): _________________________________________________________
sda1 : not--sepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
sdb : maybesepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
fdisk -l (filtered): ___________________________________________________________
Disk sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk identifier: 6A5F387D-1D0F-46E2-85A8-7338FF130C00
Start End Sectors Size Type
sda1 2048 1953523711 1953521664 931.5G Microsoft basic data
Disk sdb: 447.13 GiB, 480103981056 bytes, 937703088 sectors
Disk identifier: CCBC8B68-06A2-4022-845D-A6D301109D84
Start End Sectors Size Type
sdb1 2048 2203647 2201600 1G EFI System
sdb2 2203648 469952511 467748864 223G Linux filesystem
sdb3 469952512 469985279 32768 16M Microsoft reserved
sdb4 469985280 936294399 466309120 222.4G Microsoft basic data
sdb5 936294400 937699327 1404928 686M Windows recovery environment
Disk sdc: 28.9 GiB, 31029460992 bytes, 60604416 sectors
Disk identifier: 0x00095160
Boot Start End Sectors Size Id Type
sdc1 * 2048 60604383 60602336 28.9G c W95 FAT32 (LBA)
parted -lm (filtered): _________________________________________________________
sda:1000GB:scsi:512:4096:gpt:ATA WDC WD10SPZX-21Z:;
1:1049kB:1000GB:1000GB:ntfs:Basic data partition:msftdata;
sdb:480GB:scsi:512:512:gpt:ATA WD Green M.2 228:;
1:1049kB:1128MB:1127MB:fat32::boot, esp;
2:1128MB:241GB:239GB:ext4::;
3:241GB:241GB:16.8MB::Microsoft reserved partition:msftres;
4:241GB:479GB:239GB:ntfs:Basic data partition:msftdata;
5:479GB:480GB:719MB:ntfs::hidden, diag;
sdc:31.0GB:scsi:512:512:msdos:Kingston DataTraveler 3.0:;
1:1049kB:31.0GB:31.0GB:fat32::boot, lba;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
sda
└─sda1 ntfs 76366FE6366FA639 03665a50-932a-488d-8ae1-2195a7185cf3 Data Basic data partition
sdb
sdc
└─sdc1 vfat 56A7-8BFC 00095160-01 BOOT-REPAIR
Mount points (filtered): _______________________________________________________
Avail Use% Mounted on
/dev/sda1 421G 55% /mnt/boot-sav/sda1
/dev/sdc1 26.4G 9% /cdrom
Mount options (filtered): ______________________________________________________
/dev/sda1 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sdc1 vfat ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
====================== sdc1/boot/grub/grub.cfg (filtered) ======================
Start Boot-Repair-Disk 64-bit
Start Boot-Repair-Disk 64-bit (compatibility mode)
UEFI Firmware Settings
Test memory
========================= sdc1/syslinux.cfg (filtered) =========================
DEFAULT loadconfig
LABEL loadconfig
CONFIG /isolinux/isolinux.cfg
APPEND /isolinux/
==================== sdc1: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
?? = ?? boot/grub/grub.cfg 1
================== sdc1: Location of files loaded by Syslinux ==================
GiB - GB File Fragment(s)
?? = ?? syslinux.cfg 1
?? = ?? ldlinux.sys 1
======================== Unknown MBRs/Boot Sectors/etc =========================
/dev/sdb3: unknown GPT attributes
8000000000000000
Unknown BootLoader on sdb1
Unknown BootLoader on sdb2
Unknown BootLoader on sdb3
Unknown BootLoader on sdb4
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would not act on the boot.
sprunge.us ko ()
I tried following a step-by-step guide on how to reinstall grub, even scared of messing things up, but it didn't work either. When I tried to mount the main partition it returned
mount: special device /dev/sdb2 does not exist
Edit 2: I tried the first 2 solutions written here:
a) if I press shift + esc it leads me to a screen where sudo does not work;
b) boot repair does not work. As I said earlier, it didn't show the Recommended Repair button, just the Create a summary button. On advanced options, it doesn't show the Repair GRUB option either;
c) both Windows and Ubuntu are on UEFI, but I don't understand what to do with that;
d) I disabled hibernation and fast boot, but reinstalling GRUB is impossible. It keeps telling me /dev/sdb2 does not exist. Do I really need to wipe my ssd and reinstall all over again?
Edit 3: I tried this solution using the following on the Boot Repair Disk terminal:
sudo apt --fix-broken install
But it returned nothing. Then I tried
sudo update-grub
And the message was
error: failed to get canonical path of '/cow'.
This last one is funny, at least.
I can use Windows normally, and I can even access my files on Ubuntu using a software called Diskinternals Linux Reader, but I really wished to use Ubuntu again. I only use Windows for gaming and some apps which don't work on Wine, but I'm also very new in the Linux world. If there's something missing, please tell me.
