Date: Tue, 19 Jul 2005 03:31:55 -0700 From: Glenn Dawson <glenn@antimatter.net> To: Michael Dexter <dexter@ambidexter.com>, freebsd-questions@freebsd.org Subject: Re: Remove GRUB? Message-ID: <6.1.0.6.2.20050719032713.10bf1da0@cobalt.antimatter.net> In-Reply-To: <a0623096fbf0282e273f5@[192.168.1.100]> References: <a0623096fbf0282e273f5@[192.168.1.100]>
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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
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