10 Jan
2023
10 Jan
'23
7:11 p.m.
On Mon, 9 Jan 2023 at 17:02, Doc Shipley via cctalk
<cctalk(a)classiccmp.org> wrote:
Short version is that the GUI Disk Utility hides too much of what
it's doing AND, more to the point, makes assumptions by default. Yes,
it's possible to override the default but after [holy crap!] 2 decades
of using it I still have to fumble around.
This is a good point.
Disk Utility was pretty good up until Yosemite (10.10 for
non-Illiminati). Then Apple castrated it and ripped out most of the
facilities to specify partition sizes exactly and so on.
Up to High Sierra (10.13) it used a fairly standard *nix partitioning
layout, only on the non-case-sensitive Apple HFS+ filesystem from
Classic MacOS 8.1 back in 1998. (Apple's equivalent to FAT32, so to
speak.)
Mojave (10.14) switched to the new APFS.
Since then, Apple has been devising an increasingly complex set of
disk containers with limited or no write permissions, in efforts to
make the system more resilient. It is also worth noting that the disk
layout of Arm Macs is _substantially_ more complicated than that of
Intel ones.
Here's a guide to the structure in macOS 12, Monterey:
https://eclecticlight.co/2021/12/16/boot-disk-layout-in-macos-monterey/
The forthcoming version 13 is anticipated to be a lot more complex than that.
For my venerable Intel Macs, I have been known to just boot Ubuntu off
a USB key and use Gparted to set up the partitions, then reboot off a
macOS USB key and install onto the result.
--
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