hello i have an imac and it was on mac os x mevericks i wanted after big sure but that did not work immediately then i went to yosemite 10.10.5 and from yosemite to catalina 10.15.7 then to the app store big sure download does not work indicates be up to date
iMac 21.5″, macOS 10.15
The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.
Then follow the advise of previous posting
is your mac one of the below?
if not, catalina is as far as it can be upgraded. if it is one of the above, see this article: How to upgrade to macOS Big Sur - Apple Support
jeffreythefrog wrote:
is your mac one of the below?
i should have said "one of the below or later"
Update mac os big sure cannot
