This is a 5.25 inch floppy disk especially for the PCjr (PC junior)

Running this disk will give an error message on the screen saying WRONG COMPUTER.

So I can't say for sure if the disk is fully booting. The DIR command shows files on the disk but there is no exe file 

This is a private sale, so I can't give any warranty, also due to age (it's 40 years old, released in 1984) and no return, thank you for understanding. World wide shipping, Russia excluded. Shipping cost excludes possible taxes for your country of destination.