Date: Thu, 15 Dec 2011 20:16:13 -0500 From: Andrew Boyer <aboyer@averesystems.com> To: Craig Rodrigues <rodrigc@crodrigues.org> Cc: freebsd-current@freebsd.org Subject: Re: Idea for change to boot0 Message-ID: <4CA52BC4-EBC1-4125-95BC-EBA32B51607B@averesystems.com> In-Reply-To: <CAG=rPVc6vimPo-zK0ppBsET_Vsf-8C29ZpSE5awSPw14jbw4kQ@mail.gmail.com> References: <94847CD1-4361-424C-A2F6-75CAE918E2A9@averesystems.com> <CAG=rPVc6vimPo-zK0ppBsET_Vsf-8C29ZpSE5awSPw14jbw4kQ@mail.gmail.com>
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On Dec 15, 2011, at 6:40 PM, Craig Rodrigues wrote: > Hi, > > This is interesting. I wrote some newer documentation for PXE booting > here: > http://www.freebsd.org/doc/handbook/network-pxe-nfs.html > > In 32.8.4, bullet item 1, I mentioned that it is necessary to > configure network booting in the BIOS menu. > > With your change, is entering the BIOS menu to configure network booting > still necessary? > > -- > Craig Rodrigues > rodrigc@juniper.net > Nope. You can just do: # boot0cfg -s 6 <bootdisk> # reboot It saves you from waiting around until the BIOS screen comes up, hitting the wrong button, etc. etc. On systems with a lot of memory the BIOS start times are getting ridiculous. -Andrew > On Thu, Dec 15, 2011 at 1:21 PM, Andrew Boyer <aboyer@averesystems.com> wrote: >> These two changes allow you to set PXE as the default MBR boot selection, which enables you to write a 'reboot to the network' script. We've found it to be very useful. What do people think? >> >> Thanks, >> Andrew >> >>> Index: usr.sbin/boot0cfg/boot0cfg.c >>> =================================================================== >>> --- usr.sbin/boot0cfg/boot0cfg.c (revision 228359) >>> +++ usr.sbin/boot0cfg/boot0cfg.c (working copy) >>> @@ -169,7 +169,7 @@ >>> o_flag = 1; >>> break; >>> case 's': >>> - s_arg = argtoi(optarg, 1, 5, 's'); >>> + s_arg = argtoi(optarg, 1, 6, 's'); >>> break; >>> case 't': >>> t_arg = argtoi(optarg, 1, 0xffff, 't'); >>> @@ -472,6 +472,8 @@ >>> printf("default_selection=F%d (", mbr[OFF_OPT] + 1); >>> if (mbr[OFF_OPT] < 4) >>> printf("Slice %d", mbr[OFF_OPT] + 1); >>> + else if (mbr[OFF_OPT] == 5) >>> + print("PXE"); >>> else >>> printf("Drive 1"); >>> printf(")\n"); >>> Index: sys/boot/i386/boot0/boot0.S >>> =================================================================== >>> --- sys/boot/i386/boot0/boot0.S (revision 228359) >>> +++ sys/boot/i386/boot0/boot0.S (working copy) >>> @@ -413,6 +413,7 @@ >>> 3: >>> #endif /* ONLY_F_KEYS */ >>> #endif /* SIO */ >>> +check_selection: >>> cmpb $0x5,%al # F1..F6 or 1..6 ? >>> #ifdef PXE /* enable PXE/INT18 using F6 */ >>> jne 1f; >>> @@ -421,7 +422,6 @@ >>> #endif /* PXE */ >>> jae beep # Not in F1..F5, beep >>> >>> -check_selection: >>> /* >>> * We have a selection. If it's a bad selection go back to complain. >>> * The bits in MNUOPT were set when the options were printed. >> >> -------------------------------------------------- >> Andrew Boyer aboyer@averesystems.com >> >> >> >> >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > > > > -- > Craig Rodrigues > rodrigc@crodrigues.org -------------------------------------------------- Andrew Boyer aboyer@averesystems.com
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