Thank you, @JMCC. I do use an SD card. I guess that's why. Are you sure your link is correct? That's bionic default, no desktop version. It did try its desktop version, of course not working, lol.
I did see two buster default at the same directory. One is 4.4.184 and the other 4.4.192. Which one should I try? Older one? I assume here default means legacy? Thank you.
BTW, how to quote in this forum? I saw you guys quoted but I couldn't find how to. Sorry if this is a dump question.