Hello Everybody,
This is my first time using Linux. I tried to install Lubuntu alongside Windows 7 in a dual-boot setup, but the installation failed with an error code 1. Now, when I try to boot normally, I get a message saying “Reboot and Select proper Boot device.”
During the Lubuntu installation, I created two partitions on Disk D (Windows is on Disk C). I set up an ext4 filesystem for the root partition and an EFI filesystem for /boot/efi with the boot flag enabled.
I couldn’t find any settings related to UEFI or CSM in the BIOS.
Ubuntu Version: Lubuntu 25.04
Desktop Environment: LXQt
Relevant System informaton: AMD A6-3420M APU with Radeon HD Graphics, Radeon X800 GTO, 4gb ram, two hard drives
Below is the boot-repair report. Should I proceed with the recommended repair?
boot-repair-4ppa2081 [20250702_0417]
============================== Boot Info Summary ===============================
=> Windows is installed in the MBR of /dev/sda.
=> 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: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sda2: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /bootmgr /Boot/BCD
sda3: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files: /bootmgr /Windows/System32/winload.exe
sda4: __________________________________________________________________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sda5: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: According to the info in the boot sector, sda5 starts
at sector 2048.
Operating System:
Boot files:
sda6: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 25.04
Boot files: /etc/fstab /etc/default/grub
sda7: __________________________________________________________________________
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/fbx64.efi /efi/BOOT/mmx64.efi
/efi/ubuntu/grubx64.efi /efi/ubuntu/mmx64.efi
/efi/ubuntu/shimx64.efi /efi/ubuntu/grub.cfg
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
================================ 2 OS detected =================================
OS#1 (linux): Ubuntu 25.04 on sda6
OS#2 (windows): Windows 7 on sda3
================================ Host/Hardware =================================
CPU architecture: 64-bit
Video: R480 [Radeon X800 GTO] R480 [Radeon X800 GTO] (Secondary) from Advanced Micro Devices, Inc. [AMD/ATI] Advanced Micro Devices, Inc. [AMD/ATI]
Live-session OS is Ubuntu 64-bit (Ubuntu 25.04, plucky, x86_64)
===================================== UEFI =====================================
BIOS/UEFI firmware: 4.6.5(4.6) from American Megatrends Inc.
The firmware is EFI-compatible, and is set in EFI-mode for this live-session.
SecureBoot disabled - This system doesn't support Secure Boot.
BootCurrent: 0003
Timeout: 3 seconds
BootOrder: 0003,0001,0002
Boot0001* Hard Drive BBS(HD,,0x0)414d474f414d4e4fa7000000010000006f0054004f00530048004900420041002000440054003000310041004300410031003000300000000501090002000000007fff040002010c00d041030a0000000001010600001103120a000000ffff00007fff040001043e00ef47642dc93ba041ac194d51d01b4ce620002000200020002000200020002000200020003100200054003800530050005500450053004d0000007fff0400414d424f414d4e4f9f000000010000006700200055005300420020004400490053004b00200032002e003000200050004d004100500000000501090002000000007fff040002010c00d041030a000000000101060002120305060002007fff040001043a00ef47642dc93ba041ac194d51d01b4ce6200055005300420020004400490053004b00200032002e003000200050004d004100500000007fff0400414d424f
Boot0002 CD/DVD Drive BBS(CDROM,,0x0)414d474f414d4e4fb3000000010000006f0048004c002d00440054002d00530054002000440056004400520041004d00200047004800320034004e0053004400310000000501090003000000007fff040002010c00d041030a0000000001010600001103120a000200ffff00007fff040001043e00ef47642dc93ba041ac194d51d01b4ce631004b0049004500360032003400450031003400200033002000200020002000200020002000200000007fff0400414d424f
Boot0003* UEFI: USB DISK 2.0 PMAP PciRoot(0x0)/Pci(0x12,0x2)/USB(2,0)/HD(1,MBR,0x79b378,0x800,0x1ce5800)AMBO
6c4ec35ced47a0bfa4cc96d3570d2e17 sda7/BOOT/fbx64.efi
9f09ebdacbdc7c46269f99c7754bbfd3 sda7/BOOT/mmx64.efi
7ccabe8753cdf1d8f38b81d65b2d9564 sda7/ubuntu/grubx64.efi
9f09ebdacbdc7c46269f99c7754bbfd3 sda7/ubuntu/mmx64.efi
211a377300f24895b42f5ce384344a0c sda7/ubuntu/shimx64.efi
211a377300f24895b42f5ce384344a0c sda7/BOOT/BOOTX64.efi
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
sda : notGPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, has-win, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
sda1 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sda2 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sda3 : is-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, end-after-100GB
sda5 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, end-after-100GB
sda6 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, end-after-100GB
sda7 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, end-after-100GB
Partitions info (2/3): _________________________________________________________
sda1 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, ntfs
sda2 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, bootmgr, is-winboot, ntfs
sda3 : isnotESP, part-has-no-fstab, no-nt, haswinload, no-recov-nor-hid, bootmgr, notwinboot, ntfs
sda5 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, ntfs
sda6 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, ext4
sda7 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, vfat
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
sda2 : not--sepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
sda3 : not--sepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
sda5 : not--sepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
sda6 : not--sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sda
sda7 : not--sepboot, 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: 0x5c010af7
Boot Start End Sectors Size Id Type
sda1 2048 24578047 24576000 11.7G 27 Hidden NTFS WinRE
sda2 24578048 25192447 614400 300M 7 HPFS/NTFS/exFAT
sda3 25192448 434792447 409600000 195.3G 7 HPFS/NTFS/exFAT
sda4 434794496 1953525167 1518730672 724.2G 5 Extended
sda5 434796544 1922803711 1488007168 709.5G 7 HPFS/NTFS/exFAT
sda6 1922805760 1952808959 30003200 14.3G 83 Linux
sda7 * 1952811008 1953525167 714160 348.7M c W95 FAT32 (LBA)
Disk sdb: 14.45 GiB, 15514730496 bytes, 30302208 sectors
Disk identifier: 0x0079b378
Boot Start End Sectors Size Id Type
sdb1 * 2048 30302207 30300160 14.4G c W95 FAT32 (LBA)
Disk zram0: 1.91 GiB, 2049552384 bytes, 500379 sectors
parted -lm (filtered): _________________________________________________________
sda:1000GB:scsi:512:4096:msdos:ATA TOSHIBA DT01ACA1:;
1:1049kB:12.6GB:12.6GB:ntfs::msftres;
2:12.6GB:12.9GB:315MB:ntfs::;
3:12.9GB:223GB:210GB:ntfs::;
4:223GB:1000GB:778GB:::;
5:223GB:984GB:762GB:ntfs::;
6:984GB:1000GB:15.4GB:ext4::;
7:1000GB:1000GB:366MB:fat32::boot, lba;
sdb:15.5GB:scsi:512:512:msdos: USB DISK 2.0:;
1:1049kB:15.5GB:15.5GB:fat32::boot, lba;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
sda
├─sda1 ntfs 080EA3A60EA38B70 5c010af7-01
├─sda2 ntfs C4A0A875A0A86F9A 5c010af7-02
├─sda3 ntfs D626F56C26F54DCD 5c010af7-03
├─sda4 5c010af7-04
├─sda5 ntfs CEF450E9F450D575 5c010af7-05 DATA
├─sda6 ext4 0318db25-e1bb-41fc-9c6e-0babbe63de9a 5c010af7-06
└─sda7 vfat 32F3-F780 5c010af7-07
sdb
└─sdb1 vfat 6EC5-95BD 0079b378-01 LUBUNTU 25_
Mount points (filtered): _______________________________________________________
Avail Use% Mounted on
/dev/sda1 11.6G 1% /mnt/boot-sav/sda1
/dev/sda2 264.3M 12% /mnt/boot-sav/sda2
/dev/sda3 73.8G 62% /mnt/boot-sav/sda3
/dev/sda5 395.1G 44% /mnt/boot-sav/sda5
/dev/sda6 6.2G 50% /mnt/boot-sav/sda6
/dev/sda7 341.9M 2% /mnt/boot-sav/sda7
/dev/sdb1 11.3G 22% /cdrom
efivarfs 25.4K 53% /sys/firmware/efi/efivars
Mount options (filtered): ______________________________________________________
/dev/sda1 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda2 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda3 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda5 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda6 ext4 rw,relatime
/dev/sda7 vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
/dev/sdb1 vfat ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
========================== sda6/etc/fstab (filtered) ===========================
# <file system> <mount point> <type> <options> <dump> <pass>
UUID=0318db25-e1bb-41fc-9c6e-0babbe63de9a / ext4 defaults 0 1
UUID=32F3-F780 /boot/efi vfat defaults 0 2
/swapfile swap swap defaults 0 0
======================= sda6/etc/default/grub (filtered) =======================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR='Ubuntu'
GRUB_CMDLINE_LINUX_DEFAULT='quiet splash'
GRUB_CMDLINE_LINUX=""
==================== sda6: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
923.528396606 = 991.631065088 boot/vmlinuz 1
923.528396606 = 991.631065088 boot/vmlinuz-6.14.0-15-generic 1
923.528396606 = 991.631065088 boot/vmlinuz.old 1
923.437797546 = 991.533785088 boot/initrd.img 4
923.437797546 = 991.533785088 boot/initrd.img-6.14.0-15-generic 4
923.437797546 = 991.533785088 boot/initrd.img.old 4
===================== sda6: ls -l /etc/grub.d/ (filtered) ======================
-rwxr-xr-x 1 root root 18133 Apr 10 13:23 10_linux
-rwxr-xr-x 1 root root 43202 Apr 10 13:23 10_linux_zfs
-rwxr-xr-x 1 root root 14513 Apr 10 13:23 20_linux_xen
-rwxr-xr-x 1 root root 786 Apr 10 13:23 25_bli
-rwxr-xr-x 1 root root 13120 Apr 10 13:23 30_os-prober
-rwxr-xr-x 1 root root 1174 Apr 10 13:23 30_uefi-firmware
-rwxr-xr-x 1 root root 730 Mar 25 16:35 35_fwupd
-rwxr-xr-x 1 root root 214 Apr 10 13:23 40_custom
-rwxr-xr-x 1 root root 215 Apr 10 13:23 41_custom
===================== sda7/efi/ubuntu/grub.cfg (filtered) ======================
search.fs_uuid 0318db25-e1bb-41fc-9c6e-0babbe63de9a root hd0,msdos6
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
====================== sdb1/boot/grub/grub.cfg (filtered) ======================
Try or Install Lubuntu
Lubuntu (safe graphics)
OEM install (for manufacturers)
Boot from next volume
UEFI Firmware Settings
Test memory
==================== sdb1: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
?? = ?? boot/grub/grub.cfg 1
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would purge (in order to remove grub-efi) and reinstall the grub2 of
sda6 into the MBR of sda.
Grub-efi would not be selected by default because legacy Windows detected.
Additional repair would be performed: unhide-bootmenu-10s win-legacy-basic-fix
Confirmation request before suggested repair: __________________________________
LegacyWindows detected. The boot of your PC is in EFI mode. You may want to retry after changing it to BIOS-compatibility/CSM/Legacy mode.
Are you sure you want to continue anyway?
Final advice in case of suggested repair: ______________________________________
The boot files of [sda6 (end>100GB)] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)Please set your BIOS in Legacy mode in order to start your Ubuntu 25.04, then type command [sudo update-grub] in order to add the Windows entry to your GRUB menu.