2021—macOS Monterey 12

2021—macOS Big Sur 11

2020—macOS Big Sur 11

2020—macOS Catalina 10.15

2019—macOS Catalina 10.15

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Table of Contents

Welcome
- Included apps
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- Calendar
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- Find My
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Copyright

Make sure your iMac recognizes its new memory

After you install memory, check that your iMac recognizes the new memory. See > About This Mac.

You’ll see the total amount of memory installed in your iMac. For a detailed view of the amount of memory installed, click System Report, then click Memory on the left under Hardware.

If the memory you installed doesn’t meet specifications, your iMac will sound three tones every five seconds. If this happens, shut down your iMac and check the installation instructions again to make sure that the memory is compatible and installed correctly. If you still have problems, remove the memory and consult the support information that came with the memory or contact the vendor who provided the memory.

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