My Dell 960 desktop has been running Ubuntu 22.04 for several months without any problems. Suddenly it stopped, and upon restart Grub Rescue came up. I'm unable to redirect boot with LS commands. I used a USB stick with Ubuntu 24.04 to reboot and loaded and ran Boot Repair. The results are at https://paste.ubuntu.com/p/y9cxnbT6rG/ .
============================== Boot Info Summary =============================== => Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (,msdos1)/boot/grub. It also embeds following components: modules --------------------------------------------------------------------------- fshelp ext2 part_msdos biosdisk --------------------------------------------------------------------------- => Grub2 (v2.00) is installed in the MBR of /dev/sdb and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (hd0,msdos1)/boot/grub. It also embeds following components: modules --------------------------------------------------------------------------- biosdisk fshelp fat exfat ext2 ntfs ntfscomp part_msdos ---------------------------------------------------------------------------sda1: __________________________________________________________________________ File system: ext4 Boot sector type: - Boot sector info: Mounting failed: mount: /mnt/BootInfo/sda1: mount(2) system call failed: Structure needs cleaning. dmesg(1) may have more information after failed mount system call.sda2: __________________________________________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________________________________________ File system: swap Boot sector type: - Boot sector info: sdb1: __________________________________________________________________________ File system: vfat Boot sector type: MSWIN4.1: FAT32 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: /boot/grub/grub.cfg /efi/boot/bootx64.efi /efi/boot/grubx64.efi /efi/boot/mmx64.efi================================ 0 OS detected ================================================================= Host/Hardware =================================CPU architecture: 64-bitVideo: RV620 PRO [Radeon HD 3470] from Advanced Micro Devices, Inc. [AMD/ATI]Live-session OS is Ubuntu 64-bit (Ubuntu 24.04.1 LTS, noble, x86_64)===================================== UEFI =====================================BIOS/UEFI firmware: A06(5.0) from Dell Inc.This live-session is in Legacy/BIOS/CSM mode (not in EFI mode).============================= Drive/Partition Info =============================Disks info: ____________________________________________________________________sda : notGPT, no-BIOSboot, has-noESP, not-usb, not-mmc, no-os, no-wind, 2048 sectors * 512 bytesPartitions info (1/3): _________________________________________________________sda1 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, end-after-100GBPartitions info (2/3): _________________________________________________________sda1 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, ext4Partitions info (3/3): _________________________________________________________sda1 : maybesepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sdafdisk -l (filtered): ___________________________________________________________Disk sda: 149.01 GiB, 160000000000 bytes, 312500000 sectorsDisk identifier: 0x00039e5f Boot Start End Sectors Size Id Typesda1 * 2048 308375551 308373504 147G 83 Linuxsda2 308377598 312498175 4120578 2G 5 Extendedsda5 308377600 312498175 4120576 2G 82 Linux swap / SolarisDisk sdb: 14.65 GiB, 15728640000 bytes, 30720000 sectorsDisk identifier: 0x001fc462 Boot Start End Sectors Size Id Typesdb1 * 2048 30719951 30717904 14.6G c W95 FAT32 (LBA)parted -lm (filtered): _________________________________________________________sda:160GB:scsi:512:512:msdos:ATA ST3160815AS:;1:1049kB:158GB:158GB:ext4::boot;2:158GB:160GB:2110MB:::;5:158GB:160GB:2110MB:linux-swap(v1)::swap;sdb:15.7GB:scsi:512:512:msdos:USB DISK :;1:1049kB:15.7GB:15.7GB:fat32::boot, lba;blkid (filtered): ______________________________________________________________NAME FSTYPE UUID PARTUUID LABEL PARTLABELsda ├─sda1 ext4 2fb459a8-e6d6-4071-8792-be88c6933883 00039e5f-01 ├─sda2 00039e5f-02 └─sda5 swap 90b375f3-9597-4eb8-9611-4d79a726cba1 00039e5f-05 sdb └─sdb1 vfat A01F-2DAF 001fc462-01 UBUNTU 24_0 Mount points (filtered): _______________________________________________________ Avail Use% Mounted on/dev/sdb1 8.9G 40% /cdromMount options (filtered): ______________________________________________________/dev/sdb1 vfat ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro====================== sdb1/boot/grub/grub.cfg (filtered) ======================Try or Install UbuntuUbuntu (safe graphics)Boot from next volumeUEFI Firmware SettingsTest memory==================== sdb1: Location of files loaded by Grub ==================== GiB - GB File Fragment(s) ?? = ?? boot/grub/grub.cfg 1Suggested repair: ______________________________________________________________The default repair of the Boot-Repair utility would not act on the boot.The line says "The default repair of the Boot-Repair utility would not act on the boot." I am reluctant to try the advanced mode as I do not want to lose data on the drive if the wrong selections are chosen. Should I
a) Run the advanced mode without checking any options other than those already checked
b) Install Ubuntu 24 over the top of the current installation (do not want to lose other files on disk!)
c) Run other utilities or fixes (please suggest which ones and how to do this). One message in the above Pastebin says:
Mounting failed: mount: /mnt/BootInfo/sda1: mount(2) system call failed: Structure needs cleaning. dmesg(1) may have more information after failed mount system call.Is there a way to "clean the structure" without reloading Ubuntu?