1. Bla1ze's Avatar
    As highlighted on Apple's macOS Catalina preview page, here are the Macs that can run MacOS Catalina.

    MacBook (2015 or newer)
    MacBook Air (2012 or newer)
    MacBook Pro (2012 or newer)
    Mac mini (2012 or newer)
    iMac (2012 or newer)
    iMac Pro (2017 or newer)
    Mac Pro (2013 or newer)

    See if your Mac can run MacOS Catalina-catalina-macs-l.jpg
    nikkisharif and Just_Me_D like this.
    06-03-2019 03:39 PM
  2. nikkisharif's Avatar
    Even though my Air & Pro can run it, I kinda just want a new device for it lol
    06-03-2019 04:46 PM
  3. mbrannigan's Avatar
    i have a late 2013 imac but Catalina is basically unusably slow. I talked with apple support for about an hour and we did nvram rest, SMC reset and I was asked to complete a full backup. the backup took most of the day with timemachine (getting slower). I can run TOP in unix and activity monitor but cannot see the obvious resource hog and conclude it is OSX itself. have also done a recovery re-install.

    The opera browser might be an issue.

    Thinking to revert to Mojave (with USB install) unless a new Catalina is coming soon and WONT be installing on my MacBook air or I'll have no functioning computers.
    10-29-2019 05:52 PM
  4. mbrannigan's Avatar
    This seems like the time I upgraded my white macbook beyond Snow Leopard. I reverted multiple times and then just left it at SL as a legacy unit. maybe I could use a Plex server with SSD upgrade as quite fast.

    Might be at the tipping point for late 2013 imac's, could be catalina bugs. I could wait for the catalina patch release or revert to Mojave. my imac has heaps of free disk space and 16GB memory.
    10-29-2019 05:57 PM
  5. nikkisharif's Avatar
    i have a late 2013 imac but Catalina is basically unusably slow. I talked with apple support for about an hour and we did nvram rest, SMC reset and I was asked to complete a full backup. the backup took most of the day with timemachine (getting slower). I can run TOP in unix and activity monitor but cannot see the obvious resource hog and conclude it is OSX itself. have also done a recovery re-install.

    The opera browser might be an issue.

    Thinking to revert to Mojave (with USB install) unless a new Catalina is coming soon and WONT be installing on my MacBook air or I'll have no functioning computers.
    Wow...this is interesting! I have a late 2012 MBA & it works flawlessly. I wonder if there are any others with older machines having issues.
    10-29-2019 07:53 PM
  6. Ed7789's Avatar
    i have a late 2013 imac but Catalina is basically unusably slow. I talked with apple support for about an hour and we did nvram rest, SMC reset and I was asked to complete a full backup. the backup took most of the day with timemachine (getting slower). I can run TOP in unix and activity monitor but cannot see the obvious resource hog and conclude it is OSX itself. have also done a recovery re-install.

    The opera browser might be an issue.

    Thinking to revert to Mojave (with USB install) unless a new Catalina is coming soon and WONT be installing on my MacBook air or I'll have no functioning computers.
    Is your iMac using a spinning drive or an SSD? It might be normal in the former case, especially in the first couple of days as Catalina will rescan all your photos in the Photos.app.
    10-29-2019 08:22 PM
  7. Lee_Bo's Avatar
    10.15.1 released today. Maybe that will help.
    nikkisharif likes this.
    10-29-2019 08:38 PM
  8. nikkisharif's Avatar
    Is your iMac using a spinning drive or an SSD? It might be normal in the former case, especially in the first couple of days as Catalina will rescan all your photos in the Photos.app.
    SSD & my machine is actually mid 2012. I misspoke and said late 2012 previously.
    10-29-2019 08:54 PM
  9. mbrannigan's Avatar
    spinning drive. I noticed that the siri indexing took forever.

    Also, it seems to be rebuilding the index too often so when I press command-space, it often see it is "Indexing..."
    10-29-2019 10:41 PM
  10. mbrannigan's Avatar
    thanks Lee_Bo. Will give that a try as something hogging resources.
    10-29-2019 10:43 PM
  11. mbrannigan's Avatar
    Yes, this seems to have worked. Certainly this is the last upgrade for this machine - the old spinning drive just cannot cut it and provide a fluid experience.
    10-30-2019 04:17 PM

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