kern/130698: [boot] FreeBSD 8-CURRENT does not start any more since Dec. 10th [regression]

[Andrew I Baznikin]

The following reply was made to PR kern/130698; it has been noted by GNATS.

From: Andrew I Baznikin <dikiy at scn.ru>
To: bug-followup at FreeBSD.org, tps at vr-web.de
Cc:  
Subject: Re: kern/130698: [boot] FreeBSD 8-CURRENT does not start any more
 since Dec. 10th [regression]
Date: Thu, 8 Oct 2009 12:27:34 +0000

 Same for me, but I can't boot using 'new' device name!
 
 mountroot> ?
 
 List of GEOM managed disk devices:
 ad4 ad4a acd0
 
 I tried to boot using ad4a and still got same error.
 I boot up using Frenzy-1 live cd to make some tests:
 
 frenzy:~# dd if=/dev/ad4 of=mbr.bin bs=512 count=1; hexdump mbr.bin
 1+0 records in
 1+0 records out
 512 bytes transferred in 0.014784 secs (34632 bytes/sec)
 0000000 31fc 8ec0 8ec0 8ed8 bcd0 7c00 e689 00bf
 0000010 b906 0100 a5f3 fd89 08b1 abf3 45fe e9f2
 0000020 8a00 46f6 20bb 0475 d284 0378 568a 88ba
 0000030 0056 fce8 5200 c2bb 3107 88d2 fc6f a30f
 0000040 bb56 1b73 078a 83bf b107 f203 74ae b110
 0000050 f20b 75ae 8303 0bc7 0d8a cf01 c3e8 4200
 0000060 c380 7310 58d6 7f2c 063a 0475 0572 7448
 0000070 300d 04c0 88b0 b846 b2bf e807 00a4 77be
 0000080 e807 00b0 568a 4eb9 8ce8 3000 cde4 891a
 0000090 03d7 bc7e 01b4 16cd 1275 e430 1acd fa39
 00000a0 f272 468a ebb9 b01b e807 0094 e430 16cd
 00000b0 e088 1c3c ec74 3b2c 043c 0676 c72c 043c
 00000c0 e577 0f98 46a3 730c 88de b946 00be 8a08
 00000d0 8914 3cf3 9c04 0a74 e0c0 0504 07be c693
 00000e0 8007 f653 bb46 7540 bb08 0600 03b4 59e8
 00000f0 5e00 759d 8a06 b856 ea80 bb30 7c00 02b4
 0000100 47e8 7200 81a2 febf 5501 75aa 569a 81be
 0000110 e807 001a ff5e b0e3 e846 0024 31b0 d000
 0000120 17eb ab0f 0c56 74be e807 ffeb fe89 03e8
 0000130 be00 0781 a8ac 7580 e805 0004 f6eb 7f24
 0000140 bb53 0007 0eb4 10cd c35b 748a 8b01 024c
 0000150 01b0 8956 f6e7 bb46 7480 6613 006a ff66
 0000160 0874 5306 016a 106a e689 8048 40cc 13cd
 0000170 fc89 c35e 2020 0aa0 6544 6166 6c75 3a74
 0000180 0da0 008a 0f05 0401 0b06 0e0c 9f83 a6a5
 0000190 0ca9 0c0d 0a0b 0809 120a 100d 3f0f 44bf
 00001a0 d34f 694c 756e 46f8 6572 4265 c453 9090
 00001b0 bb66 7244 7669 2065 00b1 0f80 00b6 0180
 00001c0 0001 fea5 ffff 003f 0000 e482 0950 0000
 00001d0 0000 0000 0000 0000 0000 0000 0000 0000
 *
 00001f0 0000 0000 0000 0000 0000 0000 0000 aa55
 0000200
 
 
 frenzy:~# fdisk /dev/ad4
 ******* Working on device /dev/ad4 *******
 parameters extracted from in-core disklabel are:
 cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)
 
 Figures below won't work with BIOS for partitions not in cyl 1
 parameters to be used for BIOS calculations are:
 cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)
 
 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 156296322 (76316 Meg), flag 80 (active)
         beg: cyl 0/ head 1/ sector 1;
         end: cyl 1023/ head 254/ sector 63
 The data for partition 2 is:
 <UNUSED>
 The data for partition 3 is:
 <UNUSED>
 The data for partition 4 is:
 <UNUSED>
 
 
 frenzy:~# disklabel ad4
 # /dev/ad4:
 8 partitions:
 #        size   offset    fstype   [fsize bsize bps/cpg]
   a: 156301472       16    unused        0     0       
   c: 156301488        0    unused        0     0         # "raw" part, don't edit
 
 
 frenzy:~# disklabel ad4s1
 # /dev/ad4s1:
 8 partitions:
 #        size   offset    fstype   [fsize bsize bps/cpg]
   a:  1048576        0    4.2BSD     2048 16384     8 
   b:  4194304  1048576      swap                    
   c: 156296322        0    unused        0     0         # "raw" part, don't edit
   d:  6291456  5242880    4.2BSD     2048 16384 28552 
   e: 144761986 11534336    4.2BSD     2048 16384 28552