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Article #9756Re: And then he moved /boot to /usr...
From: Guy Harris
Date: Mon, 19 Dec 1988 23:16
Date: Mon, 19 Dec 1988 23:16
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>Does anyone know if the physical position of /boot on the disk is >critical? I'm wondering if the roms find boot at a fixed offset... The ROMS do not find "/boot" at all; they find the boot block, and do not know anything about the filesystem organization. Prior to SunOS 4.0, the boot block knew enough about the way the 4.2BSD file system worked that they could find the blocks of "/boot". The 4.0 version (and possibly the Sys4-3.2 version) has had a lobotomy, so it no longer knows much at all about the way the 4.2BSD file system works (I think this was done because the program was getting too big to fit in the boot block, at least on a SPARC machine); there is a program "installboot" (see INSTALLBOOT(8S)) that, when used to install a new version of "/boot", jams the physical addresses of the blocks of "/boot" into a table in the boot block.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!husc6!rice!sun-spots-request From: auspex!guy@uunet.uu.net (Guy Harris) Newsgroups: comp.sys.sun Subject: Re: And then he moved /boot to /usr... Message-ID: <668@auspex.UUCP> Date: 19 Dec 88 23:16:39 GMT References: <3445@geaclib.UUCP> Sender: usenet@rice.edu Organization: Sun-Spots Lines: 15 Approved: Sun-Spots@rice.edu Original-Date: 10 Dec 88 05:52:41 GMT X-Sun-Spots-Digest: Volume 7, Issue 62, message 2 of 12