Dual boot Ubuntu 18.04 and Windows 10
Windows occupies an 128GB ssd for gaming Ubuntu occupies a 256GB ssd and two same 1TB hdd with raid0 grouped by bcache.
- Download Windows 10 Home edition from SJTU ftp
Note: The ISO from official site won't work
- Burn it to a DVD
There are various ways to create an installer. My usb disk failed with a missing driver error so I had to burn it to a DVD (with UltraISO on a Windows 7).
- Install windows on the 128GB disk following the guide.
Download desktop live ubuntu-18.04.1-desktop-amd64.iso and burn it into a media
Boot with the media and select "Try Ubuntu"
partition disks with gparted:
SSD (/dev/nvme0n1):
| Space | Format | Usage | block device after partition |
|---|---|---|---|
| 1024MB | ext4 | /boot | /dev/nvme0n1p1 |
| rest | (any) | cache | /dev/nvme0n1p2 |
both HDD (/dev/sda and /dev/sdb):
| Space | Format | Usage | block device after partition |
|---|---|---|---|
| 550MB | fat32 | EFI,ESP | /dev/sda1 |
| 16384MB | swap | raid | /dev/sda2 |
| rest | (any) | raid | /dev/sda3 |
sudo apt install mdadm
# create raid for swap
sudo mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sda2 /dev/sdb2
# create raid for storage
sudo mdadm --create --verbose /dev/md1 --level=0 --raid-devices=2 /dev/sda3 /dev/sdb3
sudo apt install bcache-tools
sudo wipefs -a /dev/md1
sudo wipefs -a /dev/nvme0n1p2
sudo make-bcache -B /dev/md1 -C /dev/nvme0n1p2
For partition, select /dev/bcache0 and it prompts to create a partion /dev/bcache0p1
/dev/bcache0p1 - format EXT4, use as /
/dev/nvme0n1p1 - format EXT4, use as /boot
/dev/sda1 - EFI partition
/dev/md0 - swap
Use /dev/sda1 as EFI or the installation won't success
sudo mdadm --detail --scan | sudo tee -a /etc/mdadm/mdadm.conf
sudo mount /dev/bcache0p1 /mnt
sudo mount /dev/nvme0n1p1 /mnt/boot
sudo mount /dev/sda1 /mnt/boot/efi
for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done
sudo cp /etc/resolv.conf /mnt/etc/resolv.conf
sudo cp /etc/mdadm/mdadm.conf /mnt/etc/mdadm/mdadm.conf # will this work?
sudo chroot /mnt
sudo apt-get update
sudo apt-get install mdadm bcache-tools
# setup swap disk
sudo echo '/dev/md0 /mnt/md0 swap defaults 0 0' | sudo tee -a /etc/fstab
# no need to `update-initramfs -u` because installing bcache-tools has
# done it for you
exit
for i in /mnt/boot/efi /mnt/boot /dev/pts /dev /proc /sys /run; do sudo umount $i /mnt$i; done
sudo umount /mnt # this failed on my computer saying the device is busy
sudo reboot # but reboot anyway.
At this time, my computer failed to start after removing live disk.
So enter live disk again and restore the file system
sudo apt install mdadm bcache-tools
sudo mdadm --assemble /dev/md0 /dev/sda2 /dev/sdb2
sudo mdadm --assemble /dev/md1 /dev/sda3 /dev/sdb3
echo /dev/md1 | sudo tee /sys/fs/bcache/register
# this will quit with error but makes /dev/bcache0
sudo make-bcache -B /dev/md1
By then, If you mount /dev/bcache0, you will see the installed system.
Try sudo grub-install /dev/nvme0n1. If that fails, run
sudo dpkg-reconfigure grub-pc --frontend=text as shown in the guide
If grub doesn't find windows, run sudo update-grub in ubuntu.