install.sh

... is executed in chroot environment directly after installation - or on 1st boot.

1. check drives

lsblk

2. decrypt drive

sudo cryptsetup luksOpen /dev/nvme0n1p3 cryptdata
sudo lvscan
sudo vgchange -ay

3. mount decrypted drive

sudo mount /dev/mapper/data-root /mnt

4. chroot

sudo mount /dev/nvme0n1p1 /mnt/boot/efi
for i in /dev /dev/pts /proc /sys /run; do sudo mount -R $i /mnt$i; done
sudo chroot /mnt

5. install.sh navigate to home, clone and execute install.sh

cd /mnt/home/hmg
git clone https://github.com/HMG-Software/company_linux.git --single-branch --filter=tree:0
cd company_linux
./install.sh

6. restart be sure to unplug thumb drive

7. post-install.sh

bash company_linux/post-install.shell

8. register company docker registry

9. Enjoy!

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sources: system76/pop-recovery