Add arch urgent chroot

src/SUMMARY.md

@@ -43,3 +43,5 @@
     - [MongoDB](./ops/tools/mongodb.md)
     - [OpenSSL](./ops/tools/openssl.md)
     - [Tmux](./ops/tools/tmux.md)
+  - [misc](./ops/misc/main.md)
+    - [Archlinux Urgent Chroot](./ops/misc/arch-urgent-chroot.md)

src/ops/misc/arch-urgent-chroot.md

@@ -0,0 +1,16 @@
+# Archlinux Urgent Chroot
+
+In case of failure, here is the savior :
+
+```sh
+loadkeys fr
+cryptsetup luksOpen /dev/nvme0n1p5 luks
+opts=defaults,noatime,nodiratime,ssd,compress=zstd
+mount -o $opts,subvol=@ /dev/mapper/vg-arch /mnt
+mount -o $opts,subvol=@/home /dev/mapper/vg-arch /mnt/home
+mount -o $opts,subvol=@/var /dev/mapper/vg-arch /mnt/var
+mount -o $opts,subvol=@/var/log /dev/mapper/vg-arch /mnt/var/log
+mount -o $opts,subvol=@/var/cache/pacman/pkg /dev/mapper/vg-arch /mnt/var/cache/pacman/pkg
+mount /dev/sdX1 /mnt/boot
+arch-chroot /mnt
+```

src/ops/misc/main.md

@@ -0,0 +1 @@
+# Misc