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Add partition diagram
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2 changed files with 31 additions and 21 deletions
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image/partition_diagram_0.png
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ubuntu_en.md
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ubuntu_en.md
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@ -13,10 +13,15 @@ By the configuration parameters, you can achieve these script to relatively wide
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For example, you can configure the system to accept 2, 3 or 4 distribution in a HDD/SSD, as you want.
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Following is the HDD/SSD partitioning plan of these script.
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While the EFI partition is depicted here, that is not needed if you install to the system with BIOS.
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This can be controllable from a parameter. Also, the size of the Linux / volume is
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configurable from a parameter.
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The volume group has only one physical volume.
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# Test environment
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These scripts are tested with following environment.
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- VMWare Workstation 15.5 ( EFI )
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@ -25,7 +30,8 @@ These scripts are tested with following environment.
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# Preparation
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This script is designed to use by copy-and-past to the shell (bash) window.
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So, it is strongly recommended to prepare the net work connection.
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So, it is strongly recommended to prepare the net work connection, and show this
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page and the shell window side-by-side
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If it is impossible, you may want to copy these scripts into a USB memory
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and jack into your machine, during the installation, to allow the copy-and-paste.
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@ -38,6 +44,7 @@ First of all, promote the shell to root. Almost of the procedure requires root p
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# Promote to the root user
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sudo -i
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```
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## Input Passphrase
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Input the passphrase to lock your crypt system. This passphrase is required to type when GRUB starts.
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The passphrase is recorded as an environment variable to refuge the type multiple time without error.
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```bash
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@ -63,31 +70,34 @@ If you set the SWAPSIZE is "0", the swap volume is not created.
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export PASSPHRASE
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# Device and partition setting. If you wan to MAKE /dev/sda2 as linux root partition,
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# set the DEV and ROOTPARTITION to /dev/sda and 2, respectively.
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# set the DEV and CRYPTPARTITION to /dev/sda and 2, respectively.
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# EFI partition is usually fixed as partition 1. If you set 0, Script will skip to make it.
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export DEV="/dev/sda"
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# If you set to "0", EFI partition will no be made.
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export EFISIZE="100M"
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if [ $EFISIZE != "0" -a $EFISIZE != "0M" ] ; then
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export EFIPARTITION=1
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export ROOTPARTITION=2
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else
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export ROOTPARTITION=1
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fi
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# You man wat to change the LVROOT for your installation
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export CRYPTPARTITION="luks_volume"
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# You may want to change the LVROOT for your installation
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export CRYPTPARTNAME="luks_volume"
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export VGNAME="vg1"
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export LVSWAP="swap"
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export LVROOT="ubuntu"
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# If you set SWAPSIZE "0", the script skips to create the swap volume.
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# ROOTSIZE is percentage to the free space in the volume group.
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# 50% mean, new partition will use 50% of the free space in the LVM volume group.
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# If you set "0" to SWAPSIZE, the script skips to create the swap volume.
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# This is useful if you add a distribution to the system which has swap volume already.
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export SWAPSIZE="8G"
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# The ROOTSIZE is percentage to the free space in the volume group.
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# 50% mean, new partition will use 50% of the free space in the LVM volume group.
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export ROOTSIZE="50%FREE"
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# Do not touch following lines.
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if [ $EFISIZE != "0" -a $EFISIZE != "0M" ] ; then
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export EFIPARTITION=1
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export CRYPTPARTITION=2
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else
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export CRYPTPARTITION=1
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fi
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```
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## Format the disk
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C A U T I O N : Following scripts destroy all the data in your disk. Make sure you want to destroy all.
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@ -102,7 +112,7 @@ if [ $EFISIZE != "0" -a $EFISIZE != "0M" ] ; then
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sgdisk --new=${EFIPARTITION}:0:+${EFISIZE} --change-name=${EFIPARTITION}:"EFI System" --typecode=${EFIPARTITION}:ef00 "${DEV}"
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mkfs.vfat -F 32 -n EFI-SP "${DEV}${EFIPARTITION}"
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fi
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sgdisk --new=${ROOTPARTITION}:0:0 --change-name=${ROOTPARTITION}:"Linux LUKS" --typecode=${ROOTPARTITION}:8309 "${DEV}"
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sgdisk --new=${CRYPTPARTITION}:0:0 --change-name=${CRYPTPARTITION}:"Linux LUKS" --typecode=${CRYPTPARTITION}:8309 "${DEV}"
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sgdisk --print "${DEV}"
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```
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@ -112,10 +122,10 @@ The LUKS partition is encrypted here by the pre-input passphrase. This LUKS part
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If everything is done successfully, you will see the LUKS volume under /dev/mapper
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```bash
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# Encrypt the partition to install the linux
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printf %s "${PASSPHRASE}" | cryptsetup luksFormat --type=luks1 --key-file - --batch-mode "${DEV}${ROOTPARTITION}"
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printf %s "${PASSPHRASE}" | cryptsetup luksFormat --type=luks1 --key-file - --batch-mode "${DEV}${CRYPTPARTITION}"
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# Open the created crypt partition. To be sure, input the passphrase manually
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cryptsetup open "${DEV}${ROOTPARTITION}" ${CRYPTPARTITION}
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cryptsetup open "${DEV}${CRYPTPARTITION}" ${CRYPTPARTNAME}
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# Check whether successful open. If mapped, it is successful.
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ls -l /dev/mapper
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@ -124,8 +134,8 @@ ls -l /dev/mapper
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The swap volume and / volume is created here, based on the given parameters.
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```bash
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# Create the Physical Volume and Volume Group.
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pvcreate /dev/mapper/${CRYPTPARTITION}
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vgcreate ${VGNAME} /dev/mapper/${CRYPTPARTITION}
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pvcreate /dev/mapper/${CRYPTPARTNAME}
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vgcreate ${VGNAME} /dev/mapper/${CRYPTPARTNAME}
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# Optional : Create a SWAP Logical Volume on VG, if volume size is not 0.
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if [ $SIZE != "0" -a $SIZE != "0G" ] ; then lvcreate -L SWAPSIZE -n ${LVSWAP} ${VGNAME} ; fi
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@ -181,10 +191,10 @@ chmod u=rx,go-rwx /etc/luks
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chmod u=r,go-rwx /etc/luks/boot_os.keyfile
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# Add a key to the key file. Use the passphrase in the environment variable.
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printf %s "${PASSPHRASE}" | cryptsetup luksAddKey -d - "${DEV}${ROOTPARTITION}" /etc/luks/boot_os.keyfile
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printf %s "${PASSPHRASE}" | cryptsetup luksAddKey -d - "${DEV}${CRYPTPARTITION}" /etc/luks/boot_os.keyfile
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# Add the LUKS volume information to /etc/crypttab to decrypt by kernel.
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echo "${CRYPTPARTITION} UUID=$(blkid -s UUID -o value ${DEV}${ROOTPARTITION}) /etc/luks/boot_os.keyfile luks,discard" >> /etc/crypttab
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echo "${CRYPTPARTNAME} UUID=$(blkid -s UUID -o value ${DEV}${CRYPTPARTITION}) /etc/luks/boot_os.keyfile luks,discard" >> /etc/crypttab
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# Finally, update the ramfs initial image with the key file.
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update-initramfs -uk all
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