# Kaiten-yaki : Yet another Full Disk Encryption for GRUB/Linux
Helpful scripts of the full disk encryption for the Linux  distribution

This is a script correction to help the installation of Linux distribution with the full disc encryption. Followings are the list of functionality. 
- Ubuntu and Void Linux.
- Install from LiveCD/USB.
- Use GUI installer, for the ease of installation.
- Automatic detection of BIOS/EFI firmware and create MBR/GPT, respectively.
- Support to install multiple distributions in a LUKS partition.
- The "/boot" is located in the same logical volume with the "/". 
- The swap logical volume is located inside encrypted volume. 
- You need to type a passphrase only once in the boot sequence. 

With the configuration parameters, you can customize each installation.  For example, you can configure the system to have 2, 3 or 4,... distributions in a HDD/SSD, as you want. 

Following is the HDD/SSD partitioning plan of these scripts ( In case of BIOS, the disk has MBR and doesn't have EFI partition, while it is depicted here). 

![Partition Diagram](image/partition_diagram_0.png)

The logical volume size of each Linux distribution (LVROOTSIZE) can be customized from a configuration parameter. Also, the swap volume size is customizable. 

As depicted the LVM volume group has only one physical volume. 

# Test environment
These scripts are tested with following environment. 
- VMWare Workstation 15.5.7 ( EFI/BIOS )
- Ubuntu 20.04.2 amd64 desktop
- Ubuntu Mate 20.04.2 amd64 desktop
- void-live-x86_64-20210218-mate.iso
- void-live-x86_64-musl-20210218-mate.iso

# Preparation
Start the PC with the LiveCD/LiveUSB of the distribution to install. Download this repository from github, and expand it. 

# Installation
Go to script directory and follow the procedure in the [INSTALL.md](INSTALL.md)

# Known issues
If you install two ore more Void Linux in to the EFI system, only the last one can boot without trouble. This is not the problem of Kaiten-yaki. 

# Acknowledgments
These scripts are based on the script shared on the [myn's diary](https://myn.hatenablog.jp/entry/install-ubuntu-focal-with-lvm-on-luks). That page contains rich information, hint and techniques around the encrypted volume and Ubiquity installer. 

# Kaiten-yaki
![](image/i-like-kaiten-yaki.jpg)