I have an older 2011 iMac that only supports up to High Sierra. How can I reformat/reinstall High Sierra, but WITHOUT using any type of bootable disk.
On my other newer iMac (running macOS Big Sur) when I pull up High Sierra on the mac AppStore and click Download it says "Update not found. The requested version of macOS is not available."
Any suggestions would be appreciated.
iMac 27″, macOS 10.15
Sorry that article didn't help.
On my 2011 iMac I go into internet recovery mode using SHIFT-OPT-CMD R and it brings me to the macosx utilities. The options: Restore from TM backup. The second is "Reinstall macOSX (setup and install a new copy of LION)". I don't want Lion. I wanted High Sierra.
WebDevGuy wrote:
"Use macOS Recovery to reinstall the Mac operating system." (Again I dont want to use a USB boot drive if possible.)
There is nothing stated nor implied in that sentence that a USB boot drive is needed or used.
FWIW, do this…
"On an Intel-based Mac, you can use Option-Command-R at startup to upgrade to the latest macOS that is compatible with your Mac"
not…
"SHIFT-OPT-CMD R".
On your 2011 iMac…
Why are you going into Internet Recovery???
"Use macOS Recovery to reinstall the Mac operating system." (Again I dont want to use a USB boot drive if possible.)
Clean install of older High Sierra macOS WITHOUT using boot disk
