Date: Thu, 26 Aug 2021 15:36:12 +0200 From: Javier <nixlist@outlook.es> To: freebsd-questions@freebsd.org Subject: Paritioning scheme on MBR disk doubts Message-ID: <MW4PR01MB640175FEDE09CAD451A9AA0BC4C79@MW4PR01MB6401.prod.exchangelabs.com>
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Hi, ok, finally, I'm going to dare to ask this (literally, after weeks, no hurry). I felt somehow dumb asking it as it looks quite obvious, but not asking it is a stone in my path before start fiddling with FreeBSD. (please, use monospace font where/if needed to view this mail correctly) I would like to know what is correct as the HandBook mainly talks about GPT today and I think it doesn't cover what I'm in doubt of, or I don't understand as is. Also have some disk basics in one section and others in another, doesn't help, when you haven't installed and you haven reached that section yet. Let me ask in schematic way :) (Questions in the middle) Note: my original idea was to post this on the forum but formatting capabilities... didn't help. Anyway..., sorry the verbosity. I guess we all agree (terminology correctness aside) with the following two examples: -------------- 1) DOS|GNU/Linux MBR +---Primary/Extended* 1 +---Primary/Extended* 2 +---Primary/Extended* 3 +---Primary/Extended* 4 (if Extended) +---Logic 1 +---Logic 2 +---. +---. +---. +---Logic nth -------------- 2) DOS|GNU/Linux + FreeBSD MBR +---Primary/Extended* 1 +---Primary/Extended* 2 +---Primary/Extended* 3 ¦ (if Extended) ¦ +---Logic 1 ¦ +---Logic 2 ¦ +---. ¦ +---. ¦ +---. ¦ +---Logic nth +---FreeBSD 4 (Slice) +---Partition 1 +---Partition 2 +---Partition 3 +---. +---. +---Partition (h/eight/8?) ****** Being the FreeBSD slice on any position of the 4 MBR possible options. Just placed 4th for simplicity in the scheme -------------- Ok, now the third example, where I mixed cases, so some questions in one. Can a whole FreeBSD installation (mountpoints) be spread along multiple slices? Can I have more than h/eight/8 partitions when using more than one slice? If no, why this small limit? Can mountpoints be outside of slices? Specially or specifically, /boot. Can it be on a FAT/32 or ext/2/3/4 file system outside the slices? I understand any other should be inside the FreeBSD slices only. And when I say slices, I don't mean only on one disk, but several too. Might be a dumb question, but better ask to be sure. What is correct and what isn't. -------------- 3) DOS|GNU/Linux + FreeBSD (hypothetical case) MBR +---Primary/Extended* 1 /Boot +---FreeBSD 2 (Slice) ¦ +---Partition 1 /etc ¦ +---Partition 2 /home ¦ +---Partition 3 ¦ +---. ¦ +---. ¦ +---Partition (h/eight/8?) +---Primary/Extended* 3 ¦ (*if Extended and only one) ¦ +---Logic 1 ¦ +---Logic 2 ¦ +---. ¦ +---. ¦ +---. ¦ +---Logic nth +---FreeBSD 4 (Slice) +---Partition 1 / +---Partition 2 +---Partition 3 +---. +---. +---Partition (h/eight/8?) /swap -------------- Despite I ask for MBR scheme, that is my BIOS/Disk system, I guess answers should be applicable to GPT, more or less, with its differences. Thanks, in advance, if I don't reply back, for your answers. Regards.
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