2010 iMac os high sierra is there a OS update?
I have a mid-201 iMac. I'm currently running High Sierra 10.13.6. Can my iMac support a new OS?
iMac 21.5″, macOS 10.13
Maximum Apple supported macOS for your 2011 iMac is High Sierra (10.13.6), but minimum OS to upgrade is 10.8. You will need a 2 step process to get to High Sierra. First, upgrade to a macOS later than 10.8;