I have collected and used "IBM OS/2 Warp 4.0 Simplified Chinese CD-ROM version" (personally feels equivalent to Windows 95, this is the last version, designed relatively humanized, later developed by another company, the Os2 Warp 5 Ecomstation I have now is its successor version, but there are very few related materials, and it is in English, I don't even know what format of hard disk it supports! Installation can't be carried out, and it's 3 CDs, more ferocious than Windows!)
IBM OS/2 Warp 3.0 Simplified Chinese version and English version (feels better than DOS, the man-machine interface is good, it's colorful, unlike MSDOS which is all dark, and there is sound after installation without finding drivers, and there are many accompanying application software!)
IBM OS/2 Warp 2.0&2.1 English floppy disk version (not much different from the above versions, there are 6 games in it, designed very interestingly, much better than DOS!
There are too few supporting materials for OS/2, installation is all by oneself to explore, it's hard to find on IBM website, personally feels, this system is good!