BTRFS Install (Kali Unkaputtbar)

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renaissance
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BTRFS Install (Kali Unkaputtbar)

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# Set a secure root password or you'll struggle to log into a recovery shell
$ sudo passwd

# Install some essential tools
$ sudo apt update && sudo apt install btrfs-progs snapper snapper-gui grub-btrfs

# Create the snapper configuration for the root filesystem "/"
$ sudo cp /usr/share/snapper/config-templates/default /etc/snapper/configs/root
$ sudo sed -i 's/^SNAPPER_CONFIGS=\"\"/SNAPPER_CONFIGS=\"root\"/' /etc/default/snapper

# Prevent "updatedb" from indexing the snapshots, which would slow down the system
$ sudo sed -i '/# PRUNENAMES=/ a PRUNENAMES = ".snapshots"' /etc/updatedb.conf
GNOME:

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# Reconfigure gdm to allow booting into read-only snapshots
# GDM needs to have write access to "/var/lib/gdm3" and "/var/lib/AccountService" during login.
# We have to create additional subvolumes for them:

$ mount # Pick your main partition, </dev/sda1> in our example, replace </dev/sda1> it with yours
$ sudo mount </dev/sda1> /mnt
$ sudo btrfs subvolume create /mnt/@var@lib@gdm3
$ sudo btrfs subvolume create /mnt/@var@lib@AccountsService

$ sudo mv /var/lib/gdm3/* /var/lib/gdm3/.*/mnt/@var@lib@gdm3
$ sudo mv /var/lib/AccountsService/* /var/lib/AccountsService/.* /mnt/@var@lib@AccountsService/

$ sudo vi /etc/fstab # Add the following (substitute the <UUID> with yours)

# /var/lib/gdm3 was on /dev/sda1 during installation
UUID=<dc1ca012-9349-4fcf-b761-ca323379b019> /var/lib/gdm3   btrfs   defaults,subvol=@var@lib@gdm3 0       0

# /var/lib/AccountsService was on /dev/sda1 during installation
UUID=<dc1ca012-9349-4fcf-b761-ca323379b019> /var/lib/AccountsService   btrfs   defaults,subvol=@var@lib@AccountsService 0       0

# Reboot for the changes to take effect
$ sudo reboot
KDE:

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# KDE works out of the box, just reboot and enjoy
$ sudo reboot
XFCE:

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# Reconfigure lightdm to allow booting into read-only snapshots
$ sudo sed -i 's/^#user-authority-in-system-dir=false/user-authority-in-system-dir=true/' /etc/lightdm/lightdm.conf
$
$ sudo reboot
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