Date: Sun, 30 Aug 2020 04:18:46 -0600 From: @lbutlr <kremels@kreme.com> To: FreeBSD <freebsd-questions@freebsd.org> Subject: Even more OT (was Re: (very OT) Ideal partition schemes (history of partitioning)) Message-ID: <703D410C-48D1-4111-A29D-F07EC1B1008D@kreme.com> In-Reply-To: <AD3B3E73-73AA-4C4E-AD9A-B22EEB47FFD5@mail.sermon-archive.info> References: <CAGBxaXkf53K4EHtq9cDaRm3MOZZixyBq-aQfZ7upHo-wUwrmCg@mail.gmail.com> <AD3B3E73-73AA-4C4E-AD9A-B22EEB47FFD5@mail.sermon-archive.info>
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On 28 Aug 2020, at 23:19, Doug Hardie <bc979@lafn.org> wrote:
> Interestingly enough, OSX has recently gone to multiple partitions. =
In this=20
Not exactly. macOS (n=C3=A9e OS X) boot drives have a single partition =
formatted as APFS and then have multiple APFS volumes inside that =
partition.
For example, this is my boot drive:
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE =
IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk0
1: EFI =E2=81=A8EFI=E2=81=A9 =
314.6 MB disk0s1
2: Apple_APFS =E2=81=A8Container disk1=E2=81=A9 =
1.0 TB disk0s2
That the boot drive with one APFS partition on disk0s2
/dev/disk1 (synthesized):
#: TYPE NAME SIZE =
IDENTIFIER
0: APFS Container Scheme - +1.0 TB disk1
Physical Store disk0s2
And there is where that partition is mapped to disk1
1: APFS Volume =E2=81=A8Avalon - Data=E2=81=A9 =
599.7 GB disk1s1
2: APFS Volume =E2=81=A8Preboot=E2=81=A9 =
437.5 MB disk1s2
3: APFS Volume =E2=81=A8Recovery=E2=81=A9 =
1.3 GB disk1s3
4: APFS Volume =E2=81=A8VM=E2=81=A9 =
5.4 GB disk1s4
5: APFS Volume =E2=81=A8Avalon=E2=81=A9 =
15.0 GB disk1s5
6: APFS Snapshot =E2=81=A8com.apple.os.update-...=E2=81=A9 =
15.0 GB disk1s5s1
7: APFS Volume =E2=81=A8Mordred - Data=E2=81=A9 =
16.4 GB disk1s7
8: APFS Volume =E2=81=A8Mordred 11.0 GB =
disk1s8
Volumes are not the same as partitions, for one thing they do not =
reserve space for themselves (they CAN, it appears, but they do not by =
default). Every volume on my boot drive has the same 326Gi of available =
free space. Second, it is trivial to add and remove volumes (as you can =
see with the APFS Snapshot volume).
There are other advantages, but they start to blur the lines between =
what is a volume feature and what is an APFS container feature.
Avalon and Mordred are the System volumes containing the base OS =
(Mordred is a clean install of the previous OS).
The OS itself can "fold" directories on different volumes into one =
directory, but if this is available to user I've not found it. If I =
could, I would do that with the home folder on Mordred - Data so I would =
not need to duplicate any files between the volumes.
--=20
"Are you pondering what I'm pondering?"
"I think so, Brain, but should we use dishwashing liquid or cooking
oil?"
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