Came home.. booted up my ArcaOS machine to check e-mails and then continue to translate..
When I opened the Drive C: icon in tree view, there was only half folders there, that used to be! - Opened the Drive C: view in all the other variations.. no difference...
looked on OS/2 command line with dir /ad ... and there all the directories were listed!
At this moment an error is detected, if you continue to use the computer after the error, you will increase the possible errors. My advice is to turn off and on again.
What I can tell you is that some teams are more sensitive than others to this problem. Static electricity??
Recently I spend with netflix, that the TV was not connected, call the support, they tell me to turn it off 20 to 30 minutes, disconnecting from the electricity, and remove the equipment connected to the usb. Turn on and all repaired.
By this I mean, if you have an error:
1- no continues
2- a restart in time will remove many problems.