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Re: installing bootblocks on a new drive
On Mon, Feb 23, 2009 at 03:42:58PM +0100, Petar Bogdanovic wrote:
> On Mon, Feb 23, 2009 at 11:50:21AM +0000, Milos Negovanovic wrote:
> >
> > After replacing a failed drive in RAID1 array I am trying to install
> > bootblocks on a new disk via:
> >
> > /usr/sbin/installboot -o timeout=5 -v /dev/rwd0a /usr/mdec/bootxx_ffsv2
> >
> >
> > When I try to boot of the new drive all I get is a reboot? Any ideas?
>
> Is there any bootcode in the mbr of wd0 (see `fdisk -B' & mbr(8))? If
> not, does the partition table of wd0 contain an active partition?
>
> As far as I remember, the first 446 bytes of the mbr may be empty, if
> the mbr partition table contains an active partition and the BIOS is
> clever enough.
Some indicators..
# fdisk /dev/wd0
(...)
Partition table:
0: NetBSD (sysid 169)
start 63, size 781422705 (381554 MB, Cyls 0-51681/95/63), Active
(...) ^^^^^^
# dd if=/dev/wd0d bs=1 count=446 2>/dev/null | hexdump -C
00000000 31 c0 8e d0 bc 00 7c 8e c0 8e d8 89 e6 bf 00 06
|1.....|.........|
00000010 b9 00 01 f3 a5 b9 00 02 f3 ab ea 1f 06 00 00 80
|................|
00000020 fa 8f 7e 02 b2 80 52 52 be 1f 07 e8 4a 01 bb 94
|..~...RR....J...|
00000030 07 8d af 2a 00 8a 46 04 84 c0 74 0a 80 7e 00 80
|...*..F...t..~..|
00000040 75 04 89 2e 84 0b 83 c5 10 83 c3 09 80 fb b8 75
|u..............u|
00000050 e4 b8 e1 00 c1 e0 02 89 c6 8b b4 00 08 85 f6 75
|...............u|
00000060 19 b8 2f 07 be 15 07 e8 14 01 89 c6 e8 09 01 5a
|../............Z|
00000070 31 c0 cd 13 cd 18 fb f4 eb fc 66 8b 6c 08 f6 06
|1.........f.l...|
00000080 91 07 04 75 43 5a 52 b4 08 cd 13 8b 44 02 50 c0
|...uCZR.....D.P.|
00000090 e8 06 86 c4 c1 ea 08 42 f7 e2 8a 54 01 01 d0 83
|.......B...T....|
000000a0 e1 3f f7 e1 5a 83 e2 3f 01 d0 48 39 e8 74 47 bb
|.?..Z..?..H9.tG.|
000000b0 aa 55 b4 41 5a 52 cd 13 b8 67 07 72 a7 81 fb 55
|.U.AZR...g.r...U|
000000c0 aa 75 a1 f6 c1 01 74 9c 66 89 2e 0d 07 be 05 07
|.u....t.f.......|
000000d0 b4 42 5a 52 cd 13 b8 43 07 72 89 a0 00 7c 84 c0
|.BZR...C.r...|..|
000000e0 74 03 a1 fe 7d 3d 55 aa b8 53 07 0f 85 75 ff 66
|t...}=U..S...u.f|
000000f0 89 ee 5a e9 0a 75 5a 8a 74 01 8b 4c 02 bb 00 7c
|..Z..uZ.t..L...||
00000100 b8 01 02 eb ce 10 00 01 00 00 7c 00 00 00 00 00
|..........|.....|
00000110 00 00 00 00 00 45 72 72 6f 72 20 00 0d 0a 00 4e |.....Error
....N|<
00000120 65 74 42 53 44 20 4d 42 52 20 62 6f 6f 74 00 4e |etBSD MBR
boot.N|<
00000130 6f 20 61 63 74 69 76 65 20 70 61 72 74 69 74 69 |o active
partiti|<
00000140 6f 6e 00 44 69 73 6b 20 72 65 61 64 20 65 72 72 |on.Disk read
err|<
00000150 6f 72 00 4e 6f 20 6f 70 65 72 61 74 69 6e 67 20 |or.No operating
|<
00000160 73 79 73 74 65 6d 00 49 6e 76 61 6c 69 64 20 43 |system.Invalid
C|<
00000170 48 53 20 72 65 61 64 00 e8 03 00 be 1c 07 60 ac |HS
read.......`.|<
00000180 b4 0e bb 01 00 cd 10 ac 84 c0 75 f4 61 c3 00 00
|..........u.a...|
00000190 1c 80 b6 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001b0 00 00 00 00 00 00 00 00 00 00 00 00 e1 b5 |..............|
000001be
Petar Bogdanovic
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