LinuxQuestions.org - [SOLVED] Kernel panic: device not found

Hi,

I just completed my LFS (version 9.1, sysvinit) project with pkgutils installed, but I can't seem to boot into my system. I get a kernel panic about VFS device "nvme0n1p3" not found type of error.

On this computer, I can choose between using AHCI or RAID or disable it completely in my BIOS settings, and right now I have the AHCI set in my BIOS. My grub.cfg is

Code:

# Begin /boot/grub/grub.cfg

set default=0

set timeout=5



insmod gzio

insmod part_gpt

insmod ext2

#set root=(hd[x], gpt[y])

# hd[x] is the drive of the LFS partion and gpt[y] is the partition

set root=(hd0,gpt3)



insmod efi_gop

insmod efi_uga

insmod font

if loadfont /boot/grub/fonts/unicode.pf2; then

  loadfont /boot/grub/fonts/unicode.pf2

  set gfxmode=auto

  insmod gfxterm

  set gfxpayload=keep

  terminal_output gfxterm

fi



menuentry "GNU/Linux, Linux 5.5.9-lfs-9.1"  {

  linux  /boot/vmlinuz-5.5.9-lfs-9.1 root=/dev/nvme0n1p3 ro

  initrd  /boot/microcode.img

}

and my fstab is

Code:

# Begin /etc/fstab



# file system      mount-point                type    options          dump  fsck

#                                                                                order



/dev/nvme0n1p2      /boot/efi                  vfat    defaults              0    1

/dev/nvme0n1p3      /                          ext4    defaults              0    1

/dev/nvme0n1p4      swap                        swap    pri=1                0    0

/dev/nvme0n1p5      /var                        ext4    defaults            0    2

/dev/nvme0n1p6      /usr                        ext4    defaults            0    2 

/dev/nvme0n1p7      /opt                        ext4    defaults            0    2

/dev/nvme0n1p8      /home                        ext4    defaults            0    2 

proc                /proc                        proc    nosuid,noexec,nodev 0    0

sysfs              /sys                        sysfs    nosuid,noexec,nodev 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

efivarfs            /sys/firmware/efi/efivars    efivarfs  defaults          0    1



# End /etc/fstab

I even tried using UUID in fstab (instead of device names) as well as the root=UUID=... kernel parameter in grub.cfg, but then it would kernel panic about a VFS error unknown root option "UUID=". I do realize that "initrd" is not part of LFS but BLFS, but I thought it would help to have it if I was going to use the UUID root option in grub.cfg. However, it still wouldn't boot even after using early kernel loading.

I can't seem to figure out what I'm doing wrong here. I'll appreciate any suggestions or tips that can help me figure this out.

** EDIT **
I do have the NVMe configured into my kernel as described here:

https://wiki.gentoo.org/wiki/NVMe

I've also added a picture of the kernel panic trace leading up to the error.