Windows+Ubuntu dual system installation instructions

Allocating installation space, making a boot disk, installing ubuntu, and other issues

Allocate installation space

You can release 500G of space in Win10 system disk management - compress the volume.
Reference: https://blog.csdn.net/sinat_37666840/article/details/124316099

Make ubuntu system boot disk

Download address of ios image file: https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/
Production method: https://blog.csdn.net/weixin_44137271/article/details/126624100

install ubuntu

Insert the boot disk into the computer, press F2 (the key to enter BOIS is different for each brand of computer) to enter the BOIS interface, change the boot boot to U disk priority, and enter the installation system.
Click Next directly until:

The partition setting method is:

Adjust partitions (four partitions are required):
first partition: mount point: /boot (type of new partition: logical partition used for: Ext4 log file system)
second partition: mount point: / (new Type of partition: primary partition used for: Ext4 log file system)
third partition: mount point: /home (type of new partition: logical partition used for: Ext4 log file system)
fourth partition: swap (new partition of type: logical partition used for: swap space)

The partition size is generally:

/boot     500Mb  这个几百M就行，不需要多，一般只会用到200多M
/         60G    这个相当于win的C盘，之前这里我选了10g，结果存满导致系统崩了   
/home     20G  	 这个相当于win的其他盘，不做设置的话，一般安装的软件都安装到/分区，所以/分区要大一点
swap      8G     一般为win系统下运行内存的一半或2/3

After the memory allocation is completed: set the device to install the bootloader, select the first partition of the partition just adjusted, which is the device number where /boot is located, mine is /dev/sda7.

other problems

1. When you are installing Ubuntu, you want to find the "Continue" button to execute the next step, but you can't find it, and you can't drag it!
The solution is: do not install the mouse on the small window, do not press the mouse, press: Alter+F7 on the keyboard, you will see that the mouse changes into a small hand, then you can move the window by dragging with the mouse, remember to drag Move, don't click the mouse, it will stop when you click it!

2. After the installation is complete, the display resolution may not be normal, just update the driver in the software updater.
3. Others: https://blog.csdn.net/sinat_37666840/article/details/124316099