These instructions assume that you have all of the following installed:
Migrating Debian from a single disk with ext4 to two disks with btrfs and RAID1.
Source: https://gist.github.com/jirutka/990d25662e729669b3ce (for Gentoo and syslinux)
Partitioning scheme
| Partition | Filesystem | Size | Description |
|---|
This configuration is not maintained anymore. You should think twice before using it, Breaking change and security issue will likely eventually happens as any abandonned project.