We just ran into a problem when backing up sysfiles when system files -
ntldr, boot.ini etc are on a drive other than C: drive.  See apar below.
Search for a drwatsn32.log file to see if this is your problem.

APAR= IC32636  SER=                            IN INCORROUT
DR. WATSON IS WITNESSED WHEN BACKING UP SYSFILES IF SYSTEM FILES NTLDR,
BOOT.INI, ETC.  ARE ON A DRIVE OTHER THAN C:
STAT= CLOSED  PER  FESN0907344-     CTID= SJ0291 ISEV= 1
SB02/01/17  RC02/01/18  CL02/01/24  PD           SEV= 1
                       PE=                       TYPE= F
RCOMP= 5698TSMCL    TIVOLI STR MGR  RREL= R42W
FCOMP= 5698TSMCL    TIVOLI STR MGR  PFREL= F999  TREL= T
ACTION=             SEC/INT=                     DUP/
USPTF=              PDPTF=                       DUPS 0
DW02/01/17  RT02/01/18  SC          FT          RE
PT          UP          LP          PV02/01/24  AP
EN          FL          LC02/01/24  RU02/01/24  OT
CT          FR          TD          TYPE OF SOLUTION=
PROJECTED CLOSE CODE=        CUST INST LVL/SU= 42W
FAILING MODULE: DSMC         FAILING LVL/SU= 42W
SYSROUTE OF:          RET APAR=             PS= S
STATUS DETAIL=                 RELIEF AVAILABLE=
SCP: UNIX    PLATFORM:  UNIX
HIPER SYMPTOMS:
DATALOSS/N      SYSTEMOUTAGE/N    FUNCTIONLOSS/N
PERFORMANCE/N   PERVASIVE/N
XSYSTEM/N

SPEC/ATTN/N

SYSRES=      SYSIN=      SYSOUT=      CPU=             RE-IPL=
OPTYPE=                 SPECIAL ACTIVITY=          REGRESSION=
PRE-SCREEN NO.=          RSCP= RS42W
ERROR DESCRIPTION:
When performing a backup of the sysfiles a Dr. Watson is
witnessed:
if using the Scheduler:
  FAULT ->004482ff 8b590c    mov   ebx,[ecx+0xc]   ds:0083d5d2=0
if using the GUI:
  FAULT ->004c7c1f 8b590c    mov   ebx,[ecx+0xc]   ds:0083d5d2=?

if using the CommandLine Client:
  FAULT ->0044620f 8b590c    mov   ebx,[ecx+0xc]   ds:0083d5d2=?
The Dr. Watson is witnessed if the sysfiles are requested for backup
directly or as part of the systemobject. The problem has been seen on NT and
on NT Citrix Metaframe. For the NT machine drive D: was the boot drive when
this problem was witnessed. For the Citrix machines the C: is changed to a
drive suchas
M: or O: during the citrix installation.
LOCAL FIX:
Can use the SUBST command to remap the C: drive as the location that
contains the system files.
  SUBST C: M:
.
Ensure that the system boot files are on C:
"ntldr", "boot.ini", "ntbootdd.sys","ntdetect.com","arcldr.exe",
"arcsetup.exe"

PROBLEM SUMMARY:
****************************************************************
* USERS AFFECTED: Win NT/2k/XP                                 *
****************************************************************
* PROBLEM DESCRIPTION: DR. WATSON IS WITNESSED WHEN BACKING    *
*                      UP SYSFILES IF SYSTEM FILESNTLDR,       *
*                      BOOT.INI, ETC.  ARE ON A DRIVE OTHER    *
*                      THAN C:                                 *
****************************************************************
* RECOMMENDATION:                                              *

****************************************************************
DR. WATSON IS WITNESSED WHEN BACKING
UP SYSFILES IF SYSTEM FILESNTLDR,
BOOT.INI, ETC.  ARE ON A DRIVE OTHER
THAN C:
PROBLEM CONCLUSION:
The source of the problem was fixed by IC31758. This is an additional fix to
the main fix from defect 30954 for IC31758. TEMPORARY FIX:
COMMENTS:
MODULES/MACROS:   DSMC     DSM      DSMSVC
SRLS:      NONE
RTN CODES:
APPLICABLE COMPONENT LEVEL/SU:
R42W PSY         UP
CIRCUMVENTION:
MESSAGE TO SUBMITTER:

CUST NAME= ALLEGHENY ENERGY SERVICE    CORP   CUST NO= 0138405
   STREET=                                    PROB NO= 48559,111
     CITY=                                    LICENSE=
      ZIP=

CUST REP= Mark Basenback                 PHONE= 724 830 5389
BO NAME= NCMD PITTSBURGH CENTRAL          AREA  =AR# 04
         IBM BLDG. 4 ALLEGHENY CENTER    B.O. NO=B SP7
         PITTSBURGH, PA.                 COUNTRY=C 000
X                        15212        AST CT=      IP CT=    2

WONG, CHRISTOPHER K.   / 56041  Y  B 999   AR# 99   C 000
PANG, KATHY            / 86156  Y  B 344   AR# 02   C 000

TRACKING:
CREATED  CR02/01/17 CRSJ0291 INCIDENT TRANSFER             1743
RECEIPT  RT02/01/18 RTSJ0291                               1048
RECEIVED RC02/01/18 RCSJ0291                               1048
ASSIGN   AS02/01/18 ASSJ0291 999999 UQ2                    1048
ASSIGN   AS02/01/18 ASSJ0291 MINSK                         1050
EDIT     SB02/01/18 SB109714 INTERESTED PARTY PAGE 2       1523
ASSIGN   AS02/01/21 ASSJ0291 MINSK/BELYAVSKY               0253
EDIT     SB02/01/23 SB974547 INTERESTED PARTY PAGE 2       1426
CLOSED   CL02/01/24 CLSJ0291 PER                           0543