Pre-

1. Make a bootable usb key with Ubuntu 14.04.5 desktop installed.
2. Two hard disks:

@H_403_11@/dev/sda 100GB /dev/sdb 50GB

Configuration

@H_403_11@/home 50GB RAID1 / 40GB /boot 1GB swap 9GB

Installing

step 1: boot to your usb driver. (use BISO)

step 2: try ubuntu

step 3: open a terminal. Clean your drivers.

@H_403_11@sudo sgdisk -Z /dev/sda sudo sgdisk -Z /dev/sdb

step 4: connect to internet.

step 5: install the RAID manager with default configuration

@H_403_11@sudo apt-get install mdadm

step 6: partition the drivers: /dev/sda and /dev/sdb

@H_403_11@$ sudo fdisk /dev/sda n p 1 # <- sda1 2048 +50G # <- sda1 with 50GB for /home on RAID1 n p 2 # <- sda2 [enter] # <- press enter on your keyboard +1G # <- sda2 with 1GB for /boot n p 3 # <- sda3 [enter] # <- press enter on your keyboard +40G # <- sda3 with 40GB for / n p 4 # <- sda4 [enter] # <- press enter on your keyboard [enter] # <- press enter on your keyboard,for Swap w $ sudo fdisk /dev/sdb n p 1 # <- sdb1 2048 +50G # <- sdb1 with 50GB for /home on RAID1

step 7: create RAID 1

@H_403_11@sudo mdadm --create /dev/md0 --l 1 -n 2 /dev/sda1 /dev/sdb1

* step 8*: create partitions on /dev/md0

@H_403_11@$ sudo fdisk /dev/md0 n p 1 [enter] [enter] # <- md0p1 is ready

step 9: start to install ubuntu on your hard drivers.
use manual partitioning. configure each driver:
Just select corresponding driver,choose use as ext4 or swap,check the format Box.

step 10 : once you finish the installation,do not reboot. The following steps is very important!

@H_403_11@sudo -s mount /dev/sda3 /mnt mount -o bind /dev /mnt/dev mount -o bind /dev/pts /mnt/dev/pts mount -o bind /sys /mnt/sys mount -o bind /proc /mnt/proc cat /etc/resolv.conf >> /mnt/etc/resolv.conf chroot /mnt apt-get install mdadm vim vim /etc/grub.d/10_linux # change quick_boot to 0 grub-install /dev/sda grub-install /dev/sdb update-grub sudo shutdown -r now

Enjoy it !