Installed Arch Phosh On Btrfs Root

[xnopasaranx]

Well... I got stuck fairly hard after the last steps. I disabled the splash screen in boot.txt and was able to see the error message, "filesystem btrfs unknown". I had to chroot into the system by booting from an sdcard, mounting the btrfs filesystem

Code:

#!/bin/bash
BOOTUUID=$(blkid -o value -s UUID /dev/mmcblk) # your boot partition
ROOTUUID=$(blkid -o value -s UUID /dev/mmcblk) # your root partition
mount UUID=${ROOTUUID} -o compress=zstd /mnt
mkdir /mnt/.snapshots
mkdir /mnt/opt
mkdir /mnt/root
mkdir /mnt/srv
mkdir /mnt/tmp
mkdir -p /mnt/usr/local
mkdir -p /mnt/var/cache
mkdir /mnt/var/log
mkdir /mnt/var/spool
mkdir /mnt/var/tmp
mkdir /mnt/boot
mkdir /mnt/home
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/.snapshots /mnt/.snapshots
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/opt /mnt/opt
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/root /mnt/root
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/srv /mnt/srv
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/tmp /mnt/tmp
mount UUID=${ROOTUUID} -o noatime,compress=zstd,ssd,commit=120,subvol=@/usr/local /mnt/usr/local
mount UUID=${ROOTUUID} -o noatime,ssd,commit=120,subvol=@/var/cache /mnt/var/cache
mount UUID=${ROOTUUID} -o noatime,ssd,commit=120,subvol=@/var/log,nodatacow /mnt/var/log
mount UUID=${ROOTUUID} -o noatime,ssd,commit=120,subvol=@/var/spool,nodatacow /mnt/var/spool
mount UUID=${ROOTUUID} -o noatime,ssd,commit=120,subvol=@/var/tmp,nodatacow /mnt/var/tmp
mount UUID=${BOOTUUID} /mnt/boot

and then a simple

Code:

mkinitcpio -p linux-megi

did the trick. You should really mention this in your guide though, people who are not familiar with arch might screw up their install and not know what to do.