[conspire] fsck "differences between boot sector and its backup"

roger at rogerchrisman.com roger at rogerchrisman.com
Sat Dec 8 22:17:41 PST 2007

Every time I boot Kubuntu 7.10 on my laptop, fsck runs and reports,
"differences between boot sector and its backup".

Should I run fsck and have it, "Copy original [boot sector] to backup"?

This is a duel boot laptop. Over a year ago I installed Windows XP on
FAT32 giving it this laptop's whole 40G hard drive. Then I used the
live desktop Kubuntu CD installer to resize the drive and install
Kubuntu 6.? on /dev/sda5. Recently I did a fresh new live CD install
of Kubuntu 7.10 to that /dev/sda5. Never did any kernel compiling on
this system. This has stock default kernel.

Here is console output of myself running fsck on it and almost having
fsck do "Copy original [boot sector] to backup" but opting to do
nothing. Thought I'd ask my smart friends, you guys, instead:

roger at spray:~$ sudo fsck
[sudo] password for roger:
fsck 1.40.2 (12-Jul-2007)
e2fsck 1.40.2 (12-Jul-2007)
/dev/sda6 is mounted.

WARNING!!!  Running e2fsck on a mounted filesystem may cause
SEVERE filesystem damage.

Do you really want to continue (y/n)? no

check aborted.
dosfsck 2.11, 12 Mar 2005, FAT32, LFN
There are differences between boot sector and its backup.
Differences: (offset:original/backup)
  430:4e/52, 431:54/65, 432:4c/6d, 433:44/6f, 434:52/76, 435:20/65, 436:69/20
  , 437:73/64, 438:20/69, 439:6d/73, 440:69/6b, 442:73/20, 443:69/6f
  , 444:6e/72, 445:67/20, 446:ff/6f, 447:0d/74, 448:0a/68, 449:44/65
  , 450:69/72, 451:73/20, 452:6b/6d, 453:20/65, 454:65/64, 455:72/69
  , 456:72/61, 457:6f/2e, 458:72/ff, 459:ff/0d, 460:0d/0a, 461:0a/44
  , 462:50/69, 463:72/73, 464:65/6b, 465:73/20, 466:73/65, 467:20/72
  , 468:61/72, 469:6e/6f, 470:79/72, 471:20/ff, 472:6b/0d, 473:65/0a
  , 474:79/50, 475:20/72, 476:74/65, 477:6f/73, 478:20/73, 479:72/20
  , 480:65/61, 481:73/6e, 482:74/79, 483:61/20, 484:72/6b, 485:74/65
  , 486:0d/79, 487:0a/20, 488:00/74, 489:00/6f, 490:00/20, 491:00/72
  , 492:00/65, 493:00/73, 494:00/74, 495:00/61, 496:00/72, 497:00/74
  , 498:00/0d, 499:00/0a, 506:bf/cb, 507:cc/d8
1) Copy original to backup
2) Copy backup to original
3) No action
? 3
roger at spray:~$

Here is fdisk output, for general reference:

roger at spray:~$ sudo fdisk -l
[sudo] password for roger:

Disk /dev/sda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xae32ae32

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1276    10243768+   c  W95 FAT32 (LBA)
/dev/sda2            1277        3416    17189550    5  Extended
/dev/sda5            1277        1458     1461883+  82  Linux swap / Solaris
/dev/sda6            1459        3416    15727603+  83  Linux
roger at spray:~$

Also, why is above /dev/sda instead of /dev/hda?

(This laptop is a Compaq Presario X1000; I *think* is has a 40G *IDE*
hard drive, not a USB hard drive.)

For reference, here's lspci output:

roger at spray:~$ lspci
00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O
Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP
Controller (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M)
USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface
Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE
Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
SMBus Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
AC'97 Modem Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250
[Mobility FireGL 9000] (rev 01)
02:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 80)
02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 20)
02:02.0 Network controller: Intel Corporation PRO/Wireless 2200BG
Network Connection (rev 05)
02:04.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller
roger at spray:~$



More information about the conspire mailing list