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I have an 2010 iMac running Sierra so that I can keep using a particular CAD programme and CS5. Is it possible to partition the 1TB hard drive to allow me to install a later MacOS as well to use as the main daily OS?
iMac 27″, macOS 10.12
Ajh162 wrote:
...Do you know if there is an Apple support article for partitioning?
Here is how to use DuckDuckGo or Google to search for Apple support articles, such as for this question:
macos partition site:support.apple.com
Try a few variations of partition or repartition, etc. Here’s one:
Partition a physical disk in Disk Utility on Mac - Apple Support
Ajh162 wrote:
...Do you know if there is an Apple support article for partitioning?
Here is how to use DuckDuckGo or Google to search for Apple support articles, such as for this question:
macos partition site:support.apple.com
Try a few variations of partition or repartition, etc. Here’s one:
Partition a physical disk in Disk Utility on Mac - Apple Support
Okay I successfully partitioned the hard drive and installed High Sierra on it, when I start up and log in it goes to High Sierra and the High Sierra HD icon appears at the top right of the screen and Macintosh HD (Sierra) shows up in the Finder window under Devices, I don't see how to access the Sierra partition though.
As quite correctly stated above, partitioning can and does work.
So too does configuring macOS as a guest in a hypervisor.
And so too does configuring and using and potentially booting from external storage; of using one or more external HDDs or SSDs.
One huge caveat with storage partitioning: corruptions can corrupt some or all of the partitions, and recovery can require reinitializing the whole HDD or SSD and then re-partitioning and restoring per-partition backups. More than a few folks have encountered partitioning bugs and partitioning corruptions. For those with no backups or no current backups of one or more partitions, that does not end well. There are lots of sad stories with partitioning.
TL;DR: When making any changes to partitioning, have backups of all partitions; of any with data that you care about.
Ok update, I can access both by double clicking on the HD icons on the desktop, what's puzzling though is that when I'm in the Sierra partition user account the OS shows as High Sierra. For my CAD programme I need to be running Sierra though.
Select it in the Startup Disk pane of System Preferences, or restart with the Option key held down.
(192920)
I'm seeing both partitions on the desktop now so getting close but I still can't see how to get into Sierra
Yes; this is done in the Disk Utility. Note that your Mac can't be upgraded past High Sierra.
(192896)
Thanks Neil,
that’s an easy one then if Hi Sierra is the max. I’ll leave it in place and add a partition for High Sierra. Do you know if there is an Apple support article for partitioning?
Dual operating systems
