The slimming installation upstairs is one way, but it is a bit troublesome.

Method 2:

In fact, opensuse supports decompression installation, that is, decompressing the whole file into a directory in the fat32 partition. Then use the most common method to start the installation in the boot\...\loader directory. When it's time to choose the installation source, choose to extract the drive letter of suse and give the path, so that suse installer can find the installation source and start the installation.

Method 3:

Another method is provided: if you have several computers with LAN available, you can also install them through nfs or ftp (you need to decompress or mount images in a certain directory on the server side), use another machine as an nfs or FTP server, and load linux and initrd images on this machine through grub to start. In the step of selecting the installation source, select nfs or ftp(http) and specify the server ip and path. This method is also troublesome and is for reference only. When I first installed it, I encountered the problem of grub recognizing ntfs, which was solved by this method. Later, I accidentally used the second method and found it feasible. However, when I installed someone else's machine, I used the nfs method in Method 3.