Fix macOS Big Sur Problems(Can't Install on Macintosh HD)
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Apple iMac 2010 21.5" i3 3.06Ghz 250Gb SSD 8Gb RAM Catalina MS Office Mac, Computers & Tech, Laptops & Notebooks on Carousell
iMac 27-inch, late 2013 model - 3TB Fusion Drive, 16 GB SDRAM - In perfect working condition - macOS Catalina - mouse and keyboard included, Computers & Tech, Desktops on Carousell
extremely slow performance (i-mac pro 27 … - Apple Community
We have a Late 2013 iMac that is only supported til Catalina. My colleague booted to Big Sur on one of our tester drives out of habit and… it just worked! Like