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ns-ntddmmc-_feature_data_random_writable.md

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UID title description old-location tech.root ms.date keywords ms.keywords req.header req.include-header req.target-type req.target-min-winverclnt req.target-min-winversvr req.kmdf-ver req.umdf-ver req.ddi-compliance req.unicode-ansi req.idl req.max-support req.namespace req.assembly req.type-library req.lib req.dll req.irql targetos req.typenames f1_keywords topic_type api_type api_location api_name
NS:ntddmmc._FEATURE_DATA_RANDOM_WRITABLE
_FEATURE_DATA_RANDOM_WRITABLE (ntddmmc.h)
The FEATURE_DATA_RANDOM_WRITABLE structure holds information about the Random Writable feature.
storage\feature_data_random_writable.htm
storage
03/29/2018
FEATURE_DATA_RANDOM_WRITABLE structure
*PFEATURE_DATA_RANDOM_WRITABLE, FEATURE_DATA_RANDOM_WRITABLE, FEATURE_DATA_RANDOM_WRITABLE structure [Storage Devices], PFEATURE_DATA_RANDOM_WRITABLE, PFEATURE_DATA_RANDOM_WRITABLE structure pointer [Storage Devices], _FEATURE_DATA_RANDOM_WRITABLE, ntddmmc/FEATURE_DATA_RANDOM_WRITABLE, ntddmmc/PFEATURE_DATA_RANDOM_WRITABLE, storage.feature_data_random_writable, structs-CD-ROM_fa825a20-a941-4af3-aabd-1b9f7e4e3ee6.xml
ntddmmc.h
Ntddcdrm.h
Windows
Windows
FEATURE_DATA_RANDOM_WRITABLE, *PFEATURE_DATA_RANDOM_WRITABLE
_FEATURE_DATA_RANDOM_WRITABLE
ntddmmc/_FEATURE_DATA_RANDOM_WRITABLE
PFEATURE_DATA_RANDOM_WRITABLE
ntddmmc/PFEATURE_DATA_RANDOM_WRITABLE
FEATURE_DATA_RANDOM_WRITABLE
ntddmmc/FEATURE_DATA_RANDOM_WRITABLE
APIRef
kbSyntax
HeaderDef
ntddmmc.h
_FEATURE_DATA_RANDOM_WRITABLE
PFEATURE_DATA_RANDOM_WRITABLE
FEATURE_DATA_RANDOM_WRITABLE

_FEATURE_DATA_RANDOM_WRITABLE structure

-description

The FEATURE_DATA_RANDOM_WRITABLE structure holds information about the Random Writable feature.

-struct-fields

-field Header

Contains a FEATURE_HEADER structure with header information for this feature descriptor.

-field LastLBA

Contains the logical block address of the last addressable block on the medium. The bytes of this array are arranged in big-endian order. LastLBA[0] contains the most significant byte, and LastLBA[3] contains the least significant byte.

-field LogicalBlockSize

Specifies the number of bytes per logical block. The bytes of this array are arranged in big-endian order. LogicalBlockSize[0] contains the most significant byte, and LogicalBlockSize[3] contains the least significant byte.

-field Blocking

Indicates the number of logical blocks per device. The bytes of this array are arranged in big-endian order. Blocking[0] contains the most significant byte, and Blocking[1] contains the least significant byte.

-field ErrorRecoveryPagePresent

Indicates, when set to zero, that the Read/Write Error Recovery Mode Page might not be present. See the SCSI Multimedia -3 (MMC-3) specification for an explanation of this page.

-field Reserved1

Reserved.

-field Reserved2

Reserved.

-remarks

This structure holds data for the feature named "Random Writable" by the MMC-3 specification. Devices that support this feature can write blocks of data to random locations on the disk. These devices do not require that the initiator address disk locations in any particular order.

-see-also

FEATURE_HEADER

FEATURE_NUMBER