https://www.exherbo.org/docs/install-guide.html
Follow my KISS Linux Guide: https://imlauera.github.io/kisslinux/
[root@arch gentoo]# unmout -R .
bash: unmout: command not found
[root@arch gentoo]# ..
bash: ..: command not found
[root@arch gentoo]# umount -R .
umount: /mnt/gentoo: target is busy.
[root@arch gentoo]# cd ..
[root@arch mnt]# umount -R gentoo
[root@arch mnt]# mount /dev/sda3 /mnt/gentoo/
[root@arch mnt]# umount gentoo
[root@arch mnt]# mount --mkdir /dev/sda3 /mnt/exherbo
[root@arch mnt]# mount -o rbind /dev /mnt/exherbo/dev/
[root@arch mnt]# mount -o rbind /sys /mnt/exherbo/sys/
[root@arch mnt]# mount -t proc none /mnt/exherbo/proc/
[root@arch mnt]# mount /dev/sda1 /mnt/exherbo/boot/
[root@arch mnt]# cp /etc/resolv.conf /mnt/exherbo/etc/resolv.conf
[root@arch mnt]# env -i TERM=$TERM SHELL=/bin/bash HOME=$HOME $(which chroot) /mnt/exherbo /bin/bash
arch / # source /etc/profile
export PS1="(chroot) $PS1"
(chroot) arch / # cave resolve -x sys-apps/systemd
Resolving: 1 steps, 3 metadata (3 arbor)