Kaz10 wrote:
Hi - sorry for lack of details!
Yes - on a USB
Sending computer for trade in - want to erase hard drive and re-install OS
Biggest issue is that at startup - computer is unresponsive to Command R, Option key, Option-Command-R or Shift-Option-Command-R, etc. Have tried as well resetting NVRAM and PRAM - does not seem to do anything
THANKS for your help
Steve
If you are trading it in— it will get stripped and recycled for basic elements, melted down, etc
So I would not waste time trying to re-install the macOS if you have an issue. Sound like your keyboard is not working.
If you can not boot to the USB installer or Recovery to erase you HD....
I would simply remove the HD before you send it in.
How to erase a disk for Mac - https://support.apple.com/en-us/HT208496
How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904
What to do before you sell, give away, or trade in your Mac ...
Apple Trade In - Apple