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From: Grant Taylor via TUHS <tuhs@tuhs.org>
To: The Unix Heritage Society <tuhs@tuhs.org>
Subject: [TUHS] Question about BSD disklabel history
Date: Sun, 31 Dec 2023 11:30:44 -0600	[thread overview]
Message-ID: <6470c59f-a1e5-418f-803d-76bcd761f530@tnetconsulting.net> (raw)

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Hi,

I've found myself wondering about partitions inside of BSD disk labels.

Specifically, when and where was the convention that "a" is root, "b" is 
swap, etc?

I also understand the "c" partition to be the entire disk, unless it 
isn't, at which point it's the entire slice (BIOS / MBR partition) 
containing the BSD disklabel and "d" is the entire disk.

I also found something last night that indicated that OpenBSD uses disk 
labels somewhat differently than FreeBSD.

Aside:  This is one of the dangers of wondering how something curious 
came to be and why it came to be when working on 10-15 year old FreeBSD 
systems.



-- 
Grant. . . .

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             reply	other threads:[~2023-12-31 17:31 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-31 17:30 Grant Taylor via TUHS [this message]
2023-12-31 17:38 ` [TUHS] " arnold
2023-12-31 20:07   ` Warner Losh
2024-01-01  0:13     ` Bakul Shah
2023-12-31 20:27   ` Phil Budne
2023-12-31 21:02     ` Warner Losh
2024-01-01  0:26   ` Grant Taylor via TUHS
2024-01-01  2:22     ` Warner Losh
2024-01-01  3:24       ` Grant Taylor via TUHS
2023-12-31 21:31 ` Clem Cole
2023-12-31 22:07   ` Warner Losh
2024-01-01 16:00     ` Clem Cole
2024-01-02 18:49       ` Warner Losh
2024-01-02 19:30         ` Chet Ramey
2024-01-02 20:07           ` Clem Cole
2024-01-02 19:50         ` Dan Cross
2024-01-02 19:55           ` Jim Capp
2024-01-02 20:11             ` Dan Cross
2024-01-02 20:30           ` Dan Cross
2024-01-02 20:50             ` Clem Cole
2024-01-02 21:04               ` Dan Cross
2023-12-31 22:46   ` G. Branden Robinson
2023-12-31 23:06     ` Larry McVoy
2023-12-31 23:37       ` Al Kossow
2023-12-31 23:41       ` Alec Muffett
2024-01-02 20:48       ` Dan Cross
2024-01-02 21:17         ` John Cowan
2024-01-03  3:33         ` Theodore Ts'o
2024-01-03  3:57           ` Warner Losh
2024-01-03  4:03             ` Warner Losh
2024-01-03  4:30             ` Theodore Ts'o
2024-01-03  5:10               ` Warner Losh
2024-01-03 15:56                 ` Dan Cross
2024-01-03 16:37                   ` Theodore Ts'o
2024-01-03 16:41                     ` Dan Cross
2024-01-04  8:42                     ` arnold
2024-01-04 18:26                       ` Kevin Bowling
2024-01-03 14:39           ` Dan Cross
2023-12-31 23:08     ` Phil Budne
2023-12-31 23:37       ` G. Branden Robinson
2023-12-31 23:59         ` Warner Losh
2023-12-31 23:50     ` G. Branden Robinson
2024-01-01  0:09       ` Al Kossow

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