> on Mac they leave your iCloud email in in plaintext on the UEFI after the computer is wiped. You are probably referring to the "Find My Mac" token that's sto

> on Mac they leave your iCloud email in in plaintext on the UEFI after the computer is wiped. You are probably referring to the "Find My Mac" token that's stored in the NVRAM. It's fairly easy to wipe it with one of these commands/procedures: - sudo nvram -d fmm-mobileme-token-FMM - sudo nvram -c # this one will wipe the entire NVRAM, use with care! - https://support.apple.com/en-us/HT204063 > For computers, expect 6 to 7 years of macOS updates at most High Sierra can be installed on "Late 2009 iMacs", that right there is 8 years of security and feature updates. Those models will get security and point updates, at the very least, until the next version of macOS, for a total of 9 years (if not more, we'll see).