iCloud pin reset
How to reset the iCloud pin as I got a second hand imac 21.5
iMac 21.5″, macOS 10.13
User profile for user:
Dustin_R_308
User level:
Community Specialist
Greetings adarshmakhija,
We understand that you are being prompted for a PIN code when you start up your Mac. This indicates that the Mac has Activation Lock enabled and has been used to lock the Mac.
In this case, you'll need to contact the previous owner to have them remove the device:
"If you've purchased a Mac from someone other than Apple or an authorized Apple reseller and the device starts up to an Activate Mac window, the device is still linked to the previous owner's account. You'll need to ask them to remove the device from their account."
About Activation Lock on your Mac
Take care.