Yes, you can use an Uno as an "Arduino as ISP" to burn the bootloader to an Uno.You can use it to burn the bootloader to any AVR microcontroller-based Arduino board. In fact, I'm quite surprised that you didn't find the official Arduino as ISP tutorial that shows just this:https://www.arduino.cc/en/Tutorial/ArduinoISP
The reason I ask is I have two UNO (Chinese clones) that are not accepting uploads. I have done all the trouble shooting and I suspect a bootloader issue with both of them. I figure if I can re-initialize the bootloader that will at least eliminate one possible issue.
Per your other thread:http://forum.arduino.cc/index.php?topic=577751Burning the bootloader has no chance of fixing the issue of the CH340 not being recognized. Burn Bootloader can only help when the computer gets a virtual COM port for the board but can't upload to it.
Oh wow, that's rough. Well I hope you can resurrect some of them!
Incorrect programmer -carduino in the command. It should be -cstk500v2.
Is it possible to upload the bootloader from one UNO to another?
Incorrect programmer -carduino in the command. It should be -cstk500v2. What did you select?Or, try to connect capacitor with big value ~1uF between RESET and GND and run it again as is.