Hitachi hard disk 0J11285 500 GB 2.5 " 8 MB 0J11285 Ficha De Dados
Códigos do produto
0J11285
Z5K500 OEM Specifications
170
14.56 Write Uncorrectable Ext (45h)
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3
2
1
0 Register
7
6 5 4 3 2
1
0
Data
Low
- - - - -
-
-
- Data
Low
-
- - - - -
-
-
Data
High
- - - - -
-
-
- Data
High
-
- - - - -
-
-
Current V V V V V V V V Error
...See
Below...
Feature
Previous - - - - -
-
-
-
Current V V V V V V V V
HOB=0 -
- - - - -
-
-
Sector Count
Previous V V V V V V V V
Sector Count
HOB=1 -
- - - - -
-
-
Current V V V V V V V V
HOB=0 V V V V V V V V
LBA Low
Previous V V V V V V V V
LBA Low
HOB=1 V V V V V V V V
Current V V V V V V V V
HOB=0 V V V V V V V V
LBA Mid
Previous V V V V V V V V
LBA Mid
HOB=1 V V V V V V V V
Current V V V V V V V V
HOB=0 V V V V V V V V
LBA High
Previous V V V V V V V V
LBA High
HOB=1 V V V V V V V V
Device
- 1 - - -
-
-
- Device
-
- - - - -
-
-
Command
0 1 0 0 0
1
0
1 Status
...See
Below...
Error Register
Status Register
7 6 5 4 3 2 1 0
7 6 5
4 3 2 1 0
CRC
UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ
COR IDX
ERR
0 0 0 V 0 V 0 0 0 V 0
V - 0 0 V
Table 140 Write Uncorrectable Ext Command (45h)
The Write Uncorrectable Ext command is used to cause the device to report an uncorrectable error when
the target sector is subsequently read. As the logical sector is part of a larger (4KB) physical sector, then
all the logical sectors within the same physical sector may report uncorrectable errors. When the Feature
field (7:0) contains a value of 55h the Write Uncorrectable Ext command causes the device to indicate a
failure when reads to any of the sectors that are contained in the physical block of the specified sector are
performed. Theses sectors are referred to as “pseudo uncorrectable” sectors. In this case whenever a
pseudo uncorrectable sector is accessed via a read command, the device performs normal error recovery
and then set the UNC and ERR bits to indicate the sector is bad.
When the feature field contains a value of AAh, the Write Uncorrectable Ext command causes the device
to flag the specified sector as “flagged uncorrectable”. Flagging a logical sector as uncorrectable causes
the device to indicate a failure when reads to specified sectors are performed. These sectors are
referred to as “flagged uncorrectable” sectors. In this case whenever a “flagged uncorrectable” sector is
accessed via a read command, the device sets the UNC and ERR bits without normal error recovery to
indicate the sector is bad.
If the Uncorrectable options are set to 55h, then sectors that have been made pseudo uncorrectable are
listed as failed in the standard error logs when read back. If the Uncorrectable options are set to AAh,
then the reading of flagged uncorrectable sectors are not logged as an error in any standardized error
logs.
The pseudo uncorrectable or flagged uncorrectable status of a sector remains through a power cycle.
If the device is unable to process a WRITE UNCORRECTABLE EXT command for any reason the device
reports command aborted error.
the target sector is subsequently read. As the logical sector is part of a larger (4KB) physical sector, then
all the logical sectors within the same physical sector may report uncorrectable errors. When the Feature
field (7:0) contains a value of 55h the Write Uncorrectable Ext command causes the device to indicate a
failure when reads to any of the sectors that are contained in the physical block of the specified sector are
performed. Theses sectors are referred to as “pseudo uncorrectable” sectors. In this case whenever a
pseudo uncorrectable sector is accessed via a read command, the device performs normal error recovery
and then set the UNC and ERR bits to indicate the sector is bad.
When the feature field contains a value of AAh, the Write Uncorrectable Ext command causes the device
to flag the specified sector as “flagged uncorrectable”. Flagging a logical sector as uncorrectable causes
the device to indicate a failure when reads to specified sectors are performed. These sectors are
referred to as “flagged uncorrectable” sectors. In this case whenever a “flagged uncorrectable” sector is
accessed via a read command, the device sets the UNC and ERR bits without normal error recovery to
indicate the sector is bad.
If the Uncorrectable options are set to 55h, then sectors that have been made pseudo uncorrectable are
listed as failed in the standard error logs when read back. If the Uncorrectable options are set to AAh,
then the reading of flagged uncorrectable sectors are not logged as an error in any standardized error
logs.
The pseudo uncorrectable or flagged uncorrectable status of a sector remains through a power cycle.
If the device is unable to process a WRITE UNCORRECTABLE EXT command for any reason the device
reports command aborted error.