The installation steps are as follows:

1. Prepare the necessary emergency disk and backup of the old system.

2. Download the ISO file of the relevant system installation disk and burn it for later use.

3. Boot into the BIOS and set the optical drive to boot first.

4. Insert the CD, restart the computer, and the CD will boot into the installation interface.

5. Click the corresponding options to install. When selecting the installation hard disk partition location, you can select a blank partition or an existing partition, and you can format the partition.