For Mac
Media syncing Read-only System volume
The Music, TV, and Podcasts apps, which replace the old iTunes app,
all sync their content through iCloud. So, if you buy or rent media on
one device, it’s made available on all your Apple gear that’s signed
into your Apple ID.
In macOS Catalina, the system runs on a dedicated system volume,
which is read-only. This keeps it separate from all your other data,
and makes it impossible for you to accidentally overwrite a critical
system file.
Apple ID pane. Sidebar devices.
If you open System Preferences, and click on the Apple ID
pane in the top right, you can access all your account
information and settings in one place. Your options and Apple
devices are found in the left-hand sidebar.
Connect a device, such as an iPhone or an iPad to your Mac,
and it appears in the Finder’s sidebar. Click on it and you can
update, restore, or back up the device, just like you used to do
with the now-defunct iTunes app.
1
If you install a macOS update that breaks an essential app, you
can restore your Mac from a snapshot taken just before the
update was installed. First of all restart your Mac, and then, when you
hear the tone, hold CMD-R to boot into Recovery Mode.
2
After logging in with your administrator’s account, choose to
Restore from Time Machine Backup, even if you don’t use Time
Machine. You can then restore from a local snapshot, taking your Mac
back to a point prior to the update.
Restore from Snapshot
AppleUserMAGAZINE
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