Date: Sat, 6 Apr 2002 00:23:19 -0600 From: Mike Meyer <mwm-dated-1018506199.294a09@mired.org> To: Peter Leftwich <Hostmaster@Video2Video.Com> Cc: FreeBSD Questions <FreeBSD-Questions@FreeBSD.Org> Subject: Re: MBR, mfsroot.flp, handbook, and list fail me! Message-ID: <15534.37975.375788.408446@guru.mired.org> In-Reply-To: <20020406010330.M72615-100000@earl-grey.cloud9.net> References: <15534.35499.959649.111092@guru.mired.org> <20020406010330.M72615-100000@earl-grey.cloud9.net>
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In <20020406010330.M72615-100000@earl-grey.cloud9.net>, Peter Leftwich <Hostmaster@Video2Video.Com> typed: > On Fri, 5 Apr 2002, Mike Meyer wrote: > > > Is it possible to boot to 4.5-RELEASE floppies, start a fixit holographic shell (aggravation city, frustration state, 01010) and do a similar FreeBSD fdisk or mbr command? Thanks for your continued help on this issue, > > On FreeBSD, the equivalent of "fdisk /mbr" is "fdisk -B", or maybe "fdisk -B ad0". > Okay, shweeeet, (now I remember seeing boot0cfg(8) somewhere!) But this > has confy-yoositt me slightly in these two regards, [A] What the heck is > /boot/mbr file? [B] is it some kind of symlink to the actual MBR of my HD? > and [C] Must the user boot to floppies, or can the user boot normally and > SAFELY change the MBR (preferably via /stand/sysinstall while logged in as > root)? /boot/mbr is a *copy* of the bootcode. It's installed by fdisk if you don't specify other code to install with the -b option. boot0cfg installs and configures the FreeBSD boot manager for multiboot systems, a copy of which is in /boot/boot0. You can use either one after booting normally. In fact, you can use them while the system is running multiuser. <mike -- Mike Meyer <mwm@mired.org> http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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