I have the ATA HD bios set for auto on the drive, How does  /var/adm/message 
log file disk0 report that   240058266 240058271 blocks has a error even when 
you devide by 2 equals 120029133 blocks  higher then what is reported for slice 
2 or 7 on fdisk showing up as a 117370890 block value vs the max value that 
Maxtor drive has 14946*16065 = 240107490 

Also during the inital install of Solaris snv_b59 or newer I never see a error 
being reported even when I open a console and type dmesg or look at 
/var/adm/messages during the DVD install? 
.
cat /var/adm/messages when you type format on the shell command line:

Apr 22 19:19:17 unknown pcplusmp: [ID 658230 kern.info] NOTICE: apic: local nmi:
 1 0 0 1
Apr 22 19:19:17 unknown pcplusmp: [ID 177709 kern.info] pcplusmp: vector 0x9 ioa
pic 0x2 intin 0x9 is bound to cpu 0
@
/Max
Apr 22 19:19:17 unknown pcplusmp: [ID 177709 kern.info] pcplusmp: vector 0x9 ioa
pic 0x2 intin 0x9 is bound to cpu 0
Apr 22 19:19:17 unknown rootnex: [ID 349649 kern.info] pci0 at root: space 0 off
set 0
Apr 22 19:19:17 unknown genunix: [ID 936769 kern.info] pci0 is /pci at 0,0
Apr 22 19:19:17 unknown pcplusmp: [ID 803547 kern.info] pcplusmp: ide (ata) inst
ance 0 vector 0xe ioapic 0x2 intin 0xe is bound to cpu 0
Apr 22 19:19:17 unknown last message repeated 1 time
Apr 22 19:19:17 unknown genunix: [ID 640982 kern.info]  IDE device at targ 0, lu
n 0 lastlun 0x0
Apr 22 19:19:17 unknown genunix: [ID 846691 kern.info]  model Maxtor 6Y120P0
Apr 22 19:19:17 unknown genunix: [ID 479077 kern.info]  ATA/ATAPI-7 supported, m
ajver 0xfe minver 0x1e
.
.
.
Apr 30 22:27:39 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Requested Block 
240058266, Error Block: 240058266
Apr 30 22:27:39 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Sense Key: 
uncorrectable data error
Apr 30 22:27:39 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Vendor 'Gen-ATA 
' error code: 0x7
Apr 30 22:27:41 2-qlq6x285hpnyt gda: [ID 107833 kern.warning] WARNING: /pci at 
0,0/pci-ide at d/ide at 0/cmdk at 0,0 (Disk0):
Apr 30 22:27:41 2-qlq6x285hpnyt         Error for command 'read sector' Error 
Level: Fatal
Apr 30 22:27:41 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Requested Block 
240058266, Error Block: 240058266
Apr 30 22:27:41 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Sense Key: 
address mark not found
Apr 30 22:27:41 2-qlq6x285hpnyt gda: [ID 107833 kern.notice]    Vendor 'Gen-ATA 
' error code: 0x1
Apr 30 22:27:41 2-qlq6x285hpnyt gda: [ID 107833 kern.warning] WARNING: /pci at 
0,0/pci-ide at d/ide at 0/cmdk at 0,0 (Disk0):
Apr 30 22:27:41 2-qlq6x285hpnyt         exceeds maximum number of retries
bash-3.00# prtvtoc /dev/rdsk/c0d0s2
* /dev/rdsk/c0d0s2 (volume "120g") partition map
*
* Dimensions:
*     512 bytes/sector
*      63 sectors/track
*     255 tracks/cylinder
*   16065 sectors/cylinder
*    7321 cylinders
*    7319 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00    3903795  16386300  20290094
       1      3    01      48195   3855600   3903794
       2      5    00          0 117579735 117579734
       3      0    00   20290095  16386300  36676394
       4      0    00   36676395  16386300  53062694   /export
       5      0    00   53062695  64308195 117370889
       7      0    00  117370890    208845 117579734
       8      1    01          0     16065     16064
       9      9    01      16065     32130     48194
bash-3.00# 

fdisk /dev/rdsk/c0d0p0
             Total disk size is 14946 cylinders
             Cylinder size is 16065 (512 byte) blocks

                                               Cylinders
      Partition   Status    Type          Start   End   Length    %
      =========   ======    ============  =====   ===   ======   ===
          1                 IFS: NTFS       151  7623    7473     50
          2       Active    Solaris        7624  14944    7321     49


format> current
Current Disk = c0d0: 120g
<DEFAULT cyl 7319 alt 2 hd 255 sec 63>
/pci at 0,0/pci-ide at d/ide at 0/cmdk at 0,0

format> current
Current Disk = c0d1
<DEFAULT cyl 14588 alt 2 hd 255 sec 63>
/pci at 0,0/pci-ide at d/ide at 0/cmdk at 1,0
disk1 format
Current partition table (original):
Total disk cylinders available: 14588 + 2 (reserved cylinders)

Part      Tag    Flag     Cylinders         Size            Blocks
  0       root    wm       3 -  1022        7.81GB    (1020/0/0)   16386300
  1       swap    wu    1023 -  2042        7.81GB    (1020/0/0)   16386300
  2     backup    wm       0 - 14587      111.75GB    (14588/0/0) 234356220
  3 unassigned    wm    2043 -  3062        7.81GB    (1020/0/0)   16386300
  4 unassigned    wm    3063 -  4082        7.81GB    (1020/0/0)   16386300
  5 unassigned    wm    4083 - 14575       80.38GB    (10493/0/0) 168570045
  6 unassigned    wm   14576 - 14581       47.07MB    (6/0/0)         96390
  7 unassigned    wm   14582 - 14587       47.07MB    (6/0/0)         96390
  8       boot    wu       0 -     0        7.84MB    (1/0/0)         16065
  9 alternates    wu       1 -     2       15.69MB    (2/0/0)         32130
fdisk /dev/rdsk/c0d1p0
             Total disk size is 24792 cylinders
             Cylinder size is 16065 (512 byte) blocks

                                               Cylinders
      Partition   Status    Type          Start   End   Length    %
      =========   ======    ============  =====   ===   ======   ===
          1                 DOS-BIG           1  10201    10201     41
          2       Active    Solaris        10202  24791    14590     59

Yet when I reloaded Windows XP 2002 version no sp2 later added sp2 with MS 
updates and then reloaded OpenSolaris DVD snv_59 again, did not see any errors 
or when I reran the Maxtor low level format and did not see the errors, only 
after several reboots and running failsafe and run fsck do these errors show up.
 
 
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