Why upgrading to Tahoe shouldn’t consume the last free space on your Mac’s SSD, and once it has settled should use little more than currently. How to clear out old snapshots and reduce System Data.
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If you’ve got large files like Virtual Machines or media libraries on the Data volume on your Mac’s internal SSD, use this method to keep the size of its snapshots smaller.
Backups don’t include everything. Here are details of those items excluded from Time Machine backups, and why they’re excluded.
What disk checks are made in Safe mode? How are they different from those run during normal startup? If Disk Utility is to be our only APFS repair tool, shouldn’t have more and better features?
The bar chart in Storage Settings shows most of your startup volume is full of System Data. What does it mean, and what use is it? Is its measure of used and free space accurate?
Deciding which file system to use for hard disks can be difficult. Here are the advantages and disadvantages explained in detail, for HFS+ and APFS.
How snapshots are created from a volume in around 0.01 second, why they will grow in size over time, how they can only be of complete volumes, and can’t be edited.
Understand how TM backs up and how snapshots work to minimise the size of local snapshots and backups, and the time they take. How to ensure files in iCloud Drive are backed up properly.
When do sparse files explode to full size, and how could you preserve them in transit? Can you copy clones or snapshots? How to preserve extended attributes?
