[SOLVED] System not booting after completion

namlessuM · 07-17-2023, 04:24 PM

Hello everyone,

I have finished the LFS book and am looking for help as my system is not bootable. When trying to boot into my LFS build, Welcome to GRUB flashes in the corner of the screen then my computer restarts. I have built off of Fedora. I originally had grub.cfg using designators like the book shows in its example file for setting the root location, but after the boot failed I changed to using the UUID and PARTUUID and the boot still failed.
I then tried to add LFS to the GRUB menu that Fedora is booting from but I can't get that to work either. The LFS system shows up when running os-prober. I can provide any other information, any help would be great.

colorpurple21859 · 07-17-2023, 07:09 PM

Boot into fedora, post the output of

Code:

sudo parted -l

Post the the boot menu item of lfs in /boot/grub2/grub.cfg
Post /etc/fstab of lfs system
Which partition is lfs On?

namlessuM · 07-18-2023, 04:56 PM

Quote:

Originally Posted by colorpurple21859

Boot into fedora, post the output of

Code:

sudo parted -l

Post the the boot menu item of lfs in /boot/grub2/grub.cfg
Post /etc/fstab of lfs system
Which partition is lfs On?

My LFS is on device sdb, boot is sdb1 and I build the system in sdb3

Here is the out put of parted -l

Code:

Model: ATA TEAM T253512GB (scsi)
Disk /dev/sda: 512GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End    Size    File system  Name                          Flags
 1      1049kB  106MB  105MB   fat32        EFI system partition          boot, esp, no_automount
 2      106MB   123MB  16.8MB               Microsoft reserved partition  msftres, no_automount
 3      123MB   512GB  511GB   ntfs         Basic data partition          msftdata
 4      512GB   512GB  547MB   ntfs                                       hidden, diag, no_automount


Model: ATA TEAM T253512GB (scsi)
Disk /dev/sdb: 512GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  269MB   268MB   ext4                  bios_grub
 2      269MB   1343MB  1074MB  linux-swap(v1)        swap
 3      1343MB  512GB   511GB   ext4


Model: ATA WDC WD40EZRZ-22G (scsi)
Disk /dev/sdc: 4001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name                          Flags
 1      17.4kB  16.8MB  16.8MB               Microsoft reserved partition  msftres
 2      16.8MB  4001GB  4001GB  ntfs         Basic data partition          msftdata


Model: ATA Samsung SSD 860 (scsi)
Disk /dev/sdd: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  1075MB  1074MB  primary  ext4         boot
 2      1075MB  500GB   499GB   primary  btrfs


Model: Unknown (unknown)
Disk /dev/zram0: 8590MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags: 

Number  Start  End     Size    File system     Flags
 1      0.00B  8590MB  8590MB  linux-swap(v1)

Fstab file for LFS

Code:

# Begin /etc/fstab

# file system 					   mount-point  type     options                dump   fsck
#

PARTUUID=89896895-22eb-c149-8910-6cfb63c6dee7      /            ext4     defaults               1      1
PARTUUID=9edf0143-21de-d940-acb6-dab32bdea98e      swap         swap     pri=1                  0      0
PARTUUID=016f9bbd-7a0e-9a48-bf55-64631faf6c18      /boot        ext4     defaults               0      0 
proc          					   /proc        proc     nosuid,noexec,nodev    0      0
sysfs         					   /sys         sysfs    nosuid,noexecmnodev    0      0
devpts           				   /dev/pts     devpts   gid=5,mode=620         0      0
tmpfs              			  	   /run         tmpfs    defaults               0      0
devtmpfs      	  	 	 	  	   /dev         devtmpfs mode=0755,nosuid       0      0
tmpfs         					   /dev/shm     tmpfs    nosuid,nodev           0      0

#End /etc/fstab

The grub.cfg file is is script generated I didn't try to add lfs to it manually, because I don't know how to do it. Here's the grub.cfg file for the LFS system that I created, it didn't boot off of this either.

Code:

# Begin /boot/grub/grub.cfg
set default=0
set timeout=5

insmod ext2
search --set=root --fs-uuid d90b5ed0-cb11-42b5-a362-1ed92bd07f62

menuentry "GNU/Linux, Linux 6.1.11-lfs-11.3" {
	linux /vmlinuz-6.1.11-lfs-11.3.x86_64 root=PARTUUID=89896895-22eb-c149-8910-6cfb63c6dee7 ro
	
}

colorpurple21859 · 07-18-2023, 10:16 PM

Remove the bios-grub flag on /dev/sdb1, The bios-grub flag is used by grub when installing grub in legacy mode on a gpt drive.
In fedora create a /boot/grub2/custom.cfg with this in it:

Code:

menuentry "GNU/Linux, Linux 6.1.11-lfs-11.3" {
        insmod all_video    
        insmod ext2
        search --set=root --fs-uuid d90b5ed0-cb11-42b5-a362-1ed92bd07f62
	linux /vmlinuz-6.1.11-lfs-11.3.x86_64 root=PARTUUID=89896895-22eb-c149-8910-6cfb63c6dee7 ro
	
}

This should give a working lfs grub menuentry at the end of the fedora grub menu.
assuming the search --set=root uuid is that of /dev/sdb1

namlessuM · 07-19-2023, 04:23 PM

Quote:

Originally Posted by colorpurple21859

Remove the bios-grub flag on /dev/sdb1, The bios-grub flag is used by grub when installing grub in legacy mode on a gpt drive.
In fedora create a /boot/grub2/custom.cfg with this in it:

Code:

menuentry "GNU/Linux, Linux 6.1.11-lfs-11.3" {
        insmod all_video    
        insmod ext2
        search --set=root --fs-uuid d90b5ed0-cb11-42b5-a362-1ed92bd07f62
	linux /vmlinuz-6.1.11-lfs-11.3.x86_64 root=PARTUUID=89896895-22eb-c149-8910-6cfb63c6dee7 ro
	
}

This should give a working lfs grub menuentry at the end of the fedora grub menu.
assuming the search --set=root uuid is that of /dev/sdb1

This worked! I've some error codes on boot now but it gets to the bash prompt. Thank you

colorpurple21859 · 07-19-2023, 05:21 PM

No problem.