I am trying to build my first LFS (8.4 SystemD), but I'm not able to write a correct grub.cfg file.
Context
- My Host OS is a Debian 10 (64bits) running on Virtualbox, its mounted on
/dev/sda. Main vdi virtual drive, plugged into SATA0 - My LFS system has been built on
/dev/sdb, another VDI virtual drive plugged into SATA1.
LFS partitions
| name | mount location (host) | LFS mount location | type | size |
|---|---|---|---|---|
/dev/sdb1 |
/mnt/lfs/boot |
/boot |
ext2 | 200M |
/dev/sdb2 |
/mnt/lfs/ |
/ |
ext4 | 20G |
/dev/sdb3 |
Swap partition | Swap partition | swap | 200M |
Output of lsblk in my host system
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 15G 0 disk
|-sda1 8:1 0 7G 0 part
|-sda2 8:2 0 1K 0 part
`-sda5 8:5 0 8G 0 part [SWAP]
sdb 8:16 0 25G 0 disk
|-sdb1 8:17 0 200M 0 part /boot
|-sdb2 8:18 0 20G 0 part /
`-sdb3 8:19 0 2G 0 part [SWAP]
sr0 11:0 1 1024M 0 rom
sr1 11:1 1 349M 0 rom
output of fdisk -l /dev/sdb
Disk /dev/sdb: 25 GiB, 26843545600 bytes, 52428800 sectors
Disk model: VBOX HARDDISK
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 096D0D9B-FF26-3B41-8A1D-78D81EAD4D4C
Device Start End Sectors Size Type
/dev/sdb1 2048 411647 409600 200M Linux filesystem
/dev/sdb2 411648 42354687 41943040 20G Linux filesystem
/dev/sdb3 42354688 46548991 4194304 2G Linux filesystem
the partition label is GPT, while my VM is booting with BIOS
Current grub.cfg file.
# Begin /boot/grub/grub.cfg
set default=0
set timeout=5
insmod ext2
set root=(hd0,1)
menuentry "GNU/Linux, Linux 4.20.12-lfs-8.4-systemd-fherbine" {
linux /vmlinuz-4.20.12-lfs-8.4-systemd-fherbine root=/dev/sda1 ro
}
Note that after configuring this file, I'm supposed to reboot the VM and get rid of the VDI that contains my host debian, that's why it's
hd0(not hd1) &/dev/sda1(not sdb1). But I might be wrong here.
Unfortunately, this configuration isn't working at all, when I arrived in the GRUB menu, and I press ENTER, I'm not able to boot: error: no such partition.
Do you have any idea what's going on ? :)
CodePudding user response：
https://wiki.archlinux.org/title/GRUB
And check hd*/sd* ids via lsblk
CodePudding user response：
I think I have an idea of what's going on:
- My VitualBox VM boots with BIOS while my partition table is GPT.