1. Backup all the data to another hard drive. Only needed data is copied, since I want a Fresh Upgrade.back up things
2. Download Ubuntu, extract it to a pen driveget ubuntu, and extract it with LinuxLive USB Creator.
3. Use GParted to partitionErrors of not able to format FAT32, so I uses GParted to partition the following table for me.
Setting:32MB - beginning of hard drive
2GB - Swap area
25GB - Root
100GB - Home folder
Rest - Fat32 as normal portable hard disk
If error still occur, try to partition one block per time.
4. Boot the pen drive and start install process
5. Other Settings
shutting down grub for searching other process while updating OS
sudo chmod -x 30_os-prober
sudo vi /etc/NetworkManager.conf
change false to true