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CachyOS

CachyOS chroot Helper

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cachy-chroot is a simple helper program to ease the process of chrooting into existing CachyOS or any Arch-based install. It lists all the partitions discovered on the machine and also supports listing BTRFS subvolumes. Last but not least, cachy-chroot also supports encrypted systems via LUKS. It will map each fstab entries to its designated crypttab entries and will close all LUKS volumes gracefully when exiting the chroot.

Usage

The process of chrooting must be done on a live ISO. Below is an example of using cachy-chroot in a CachyOS BTRFS install.

chrooting with cachy-chroot
❯ sudo su # Enter the root user within the live ISO
❯ pacman -Sy cachy-chroot # Ensure that cachy-chroot is at the latest version
❯ cachy-chroot
Info: Found 3 block devices
Info: Found partition: Partition: /dev/nvme0n1p1: FS: vfat UUID: EDA6-ED98
Info: Found partition: Partition: /dev/nvme0n1p2: FS: btrfs UUID: b09a027e-a61d-424f-858f-2e02be61b342
Info: Found partition: Partition: /dev/nvme0n1p4: FS: btrfs UUID: 66e84339-8c77-4131-afce-50ec2cf67a80
? Select the block device for the root partition (use arrow keys):  ›
  Partition: /dev/nvme0n1p1: FS: vfat UUID: EDA6-ED98
❯ Partition: /dev/nvme0n1p2: FS: btrfs UUID: b09a027e-a61d-424f-858f-2e02be61b342
  Partition: /dev/nvme0n1p4: FS: btrfs UUID: 66e84339-8c77-4131-afce-50ec2cf67a80
✔ Select the block device for the root partition (use arrow keys):  · Partition: /dev/nvme0n1p2: FS: btrfs UUID: b09a027e-a61d-424f-858f-2e02be61b342
Info: Selected BTRFS partition, mounting and listing subvolumes...
Info: Mounting partition /dev/nvme0n1p2 at /tmp/cachyos-chroot-temp-mount-b09a027e-a61d-424f-858f-2e02be61b342-hwAeIm with options: []
Info: Unmounting partition at /tmp/cachyos-chroot-temp-mount-b09a027e-a61d-424f-858f-2e02be61b342-hwAeIm
? Do you want to use CachyOS BTRFS preset to auto mount root subvolume? (y/n) › # Enter y if on CachyOS

After selecting the root partition, the program will prompt to mount additional partitions, e.g. the /boot partition

Mounting additional partitions
✔ Do you want to mount additional partitions? · yes
? Enter the mount point for additional partition (e.g. /boot) type 'skip' to cancel:  › # /boot on systemd-boot, /boot/efi on GRUB and rEFInd

When finished, exit the chroot environment by passing exit to the prompt or pressing CTRL+D on the keyboard.

Exiting chroot
exit

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