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APFS

Big Sur boot volume layout

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Detailed account of disk, volume and folder layouts on Big Sur’s boot disks, complete with roadmaps which are downloadable as PDFs.

January 13, 2021 Macs, Technology

Last Week on My Mac: Intricacies of the boot disk

Boot disk volume layout is intricate in Big Sur. M1 Macs lose the EFI partition on their internal SSDs and gain two more for APFS. Contents of /System/Volumes has also changed.

January 10, 2021 Macs, Technology

Boot disk layout on Intel and M1 Macs: High Sierra to Big Sur

Diagrams of the layout of volumes on boot disks for macOS 10.13 to 11, covering both Intel and M1 models.

January 9, 2021 Macs, Technology

Let’s make 2021 the year of Disk Utility

There’s no more critical app on your Mac, yet Disk Utility has suffered years of neglect – years in which APFS has grown many new features, and all Disk Utility gets is bugs and workaround.

January 1, 2021 Macs, Technology

Securing sensitive data

Securing sensitive data from access by others, and safeguarding it from loss of damage, is common. Solutions range from encrypted images to specialist external disks.

December 29, 2020 Macs, Technology

Last Week on My Mac: Begging from Apple

We don’t know when Apple decided to introduce Big Sur’s SSV, but even now it hasn’t told users it won’t be releasing standalone updates for 11.0.1 or 11.1.

December 20, 2020 Macs, Technology

What happens when an M1 Mac starts up?

When does an M1 Mac validate its Sealed System Volume? Who designed its display interface? How soon does Find My Mac launch? So many answers found in the log.

December 9, 2020 Macs, Technology

Getting started with Time Machine to APFS in Big Sur

For many, this could be the best reason for upgrading early. Even when it doesn’t go quite as expected, this really isn’t difficult.

December 8, 2020 Macs, Technology

How big is Xcode?

The answer could be anything from 15 to 32 GB. Maybe the Finder’s just having a wild guess? Numbers courtesy of Big Sur and APFS.

November 24, 2020 Macs, Technology

T2M2 version 1.16 works better with Big Sur’s APFS backups

Extends support for the new feature in Big Sur to make Time Machine backups to APFS volumes.

November 12, 2020 Macs, Technology, Updates

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