Date: Tue, 19 Jul 2005 14:06:37 +0300 From: Michael Dexter <dexter@ambidexter.com> To: Glenn Dawson <glenn@antimatter.net>, freebsd-questions@freebsd.org Subject: Re: Remove GRUB? Message-ID: <a06230971bf028ed53daf@[192.168.1.100]> In-Reply-To: <6.1.0.6.2.20050719032713.10bf1da0@cobalt.antimatter.net> References: <a0623096fbf0282e273f5@[192.168.1.100]> <6.1.0.6.2.20050719032713.10bf1da0@cobalt.antimatter.net>
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Glenn's suggestion of fdisk lead me to bring up the fdisk man page, which points to boot0cfg(8). Perhaps this is the utility I am after? Michael. >At 03:25 AM 7/19/2005, Michael Dexter wrote: > >>Hello, >> >>I was experimenting with the GRUB bootloader and would now like to >>remove it. Something went wrong and I must now use a bootable CD >>that gives me an option to "boot to the first partition" and the >>system boots fine. >> >>man bsdlabel gives: >> >>Installing Bootstraps >> If the -B argument is specified, bootstrap code will be read from the >> file /boot/boot and written to the disk. >> >>Assuming that this affects the mbr of the who drive, I tried: >> >>localhost# bsdlabel -B /dev/ad0 >>localhost# bsdlabel: /dev/ad0: no valid label found >> >>No problem, let's try the root partition: >> >>bsdlabel -B /dev/da0s1a >> >>No error, it blinked the hard drive activity light and appears to >>have done something but alas, it still reports a GRUB error 21 >>rather than given any sign of the FreeBSD loader. >> >>Any pointers to the rescue/install procedures applicable to this? > >Did you use fdisk to check and see if the first slice is marked as >active? Here's a sample from one of my systems: > >Media sector size is 512 >Warning: BIOS sector numbering starts with sector 1 >Information from DOS bootblock is: >The data for partition 1 is: >sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) > start 63, size 10474317 (5114 Meg), flag 80 (active) > beg: cyl 0/ head 1/ sector 1; > end: cyl 651/ head 254/ sector 63 >The data for partition 2 is: >sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) > start 10474380, size 10458315 (5106 Meg), flag 0 > beg: cyl 652/ head 0/ sector 1; > end: cyl 1023/ head 254/ sector 63 >The data for partition 3 is: ><UNUSED> >The data for partition 4 is: ><UNUSED> > >note the flag 80 in the first entry. > >-Glenn > >>Best regards, >> >>Michael Dexter >>_______________________________________________ >>freebsd-questions@freebsd.org mailing list >>http://lists.freebsd.org/mailman/listinfo/freebsd-questions >>To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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