Because ubuntu often encounters various problems and needs to be reinstalled, it is entangled with the partitioning of the disk every time . The solutions obtained by searching everywhere are different, and a lot of time is wasted, so I sorted it out and checked it by myself.
Take 330G space to install ubuntu as an example.
EFI
boot partition
Size：1G
Type：Logical
Location：Beginning of this space
Use as：efi
swap
swap partition,
Size：32G，推荐是电脑内存大小的两倍。
Type：Logical
Location：Beginning of this space
Use as：swap area
/
Root directory,
Size：至少15GB，大约可以占总容量的30%，我这里分100G。
Type：Logical
Location：Beginning of the space
Use as：Ext4 journaling file system
Mount point：/
/home
Download and store data (equivalent to a data disk), so the memory required is the largest
Size：剩余所有
Type：Logical
Location：Beginning of this space
Use as：Ext4 journaling file system
Mount point：/home
reference:
- https://itsfoss.com/install-ubuntu-dual-boot-mode-windows/