Failure to boot from HD formatted not by FreBSD

I wonder what are the limitations of MBR (/boot/boot0)?
I have the OEM-formatted harddrive (160MB), on which I want to add FreeBSD into the free space.
I created the FreeBSD partition, set MBR (in 8.0-RC2), but when it displays the boot prompt and I hit some key I only see '#' character printed and nothing happens.
When I took MBR from my older FreeBSD HD and placed it on that one, it doesn't print '#' characters but also doesn't boot.

When I boot into the healthy system with this new OEM HD attached I also see dmesg messages like this:
GEOM: ad4: partition 2 does not start on a track boundary.

What could be wrong, why it doesn't boot?

Yuri


--- partitions in MBR ---
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 7 (0x07),(NTFS, OS/2 HPFS, QNX-2 (16 bit) or Advanced UNIX)
start 2079, size 44039457 (21503 Meg), flag 80 (active)
beg: cyl 0/ head 33/ sector 1;
end: cyl 1023/ head 116/ sector 63
The data for partition 2 is:
sysid 15 (0x0f),(Extended DOS (LBA))
start 220416000, size 61222912 (29894 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 53/ sector 58
The data for partition 3 is:
sysid 18 (0x12),(Compaq diagnostics)
start 281638912, size 30942896 (15108 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 80/ sector 63
The data for partition 4 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 44041536, size 176373792 (86120 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 55/ sector 63

_______________________________________________
freebsd-hackers@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: OT File recovery Software
    ... > I guess some of you never used the fix MBR command? ... > The Master Boot Record will be created when you create the first ... > partition on the hard disk. ... > first sector on the disk. ...
    (alt.med.fibromyalgia)
  • Re: is this booting info correct?
    ... Microsoft/Windows and FreeBSD ... called the boot sector. ... If it contains boot up code the motherboard BIOS ... Each physical hard drive in the PC has it's own MBR (Master Boot ...
    (freebsd-questions)
  • Re: Solved [Re: delete first partition XP and reformat as ufs -> kernel not found]
    ... See the section 8 man page for boot. ... Does anybody has a clue why the FreeBSD ... > MBR PT: ... renumbered its MBR partition. ...
    (freebsd-questions)
  • Re: Uninstall Ubuntu
    ... I want to remove startup Grub, Ubuntu o/s, and reclaim back all my harddrive by removing the partition. ... is that the first sector on the disk, sector 0, has had the code section ... As always, if you do a backup of the entire disk, if this advice doesn't work ... The MBR is a single sector, ...
    (microsoft.public.windowsxp.general)
  • Re: Do all windows file systems contain partition header?
    ... correct to assume that the 63 sector lba would be true for all FATXX disks ... > You should be aware that this is for the standard file system typs. ... > can uniquely recognize that it owns the disk or partition and that nothing ... There is one MBR with a pointer to other records. ...
    (microsoft.public.development.device.drivers)