FEATURE_DATA_RANDOM_READABLE structure (ntddmmc.h)
The FEATURE_DATA_RANDOM_READABLE structure contains data for the random readable feature.
Syntax
typedef struct _FEATURE_DATA_RANDOM_READABLE {
FEATURE_HEADER Header;
UCHAR LogicalBlockSize[4];
UCHAR Blocking[2];
UCHAR ErrorRecoveryPagePresent : 1;
UCHAR Reserved1 : 7;
UCHAR Reserved2;
} FEATURE_DATA_RANDOM_READABLE, *PFEATURE_DATA_RANDOM_READABLE;
Members
Header
Contains a FEATURE_HEADER structure with header information for this feature descriptor.
LogicalBlockSize[4]
Indicates the number of bytes per logical block. The bytes of this value are arranged in big-endian order. LogicalBlockSize[0] contains the most significant byte, and LogicalBlockSize[3] contains the least significant byte.
Blocking[2]
Indicates the number of logical blocks per device-readable unit. The bytes of this value are arranged in big-endian order. Blocking[0] contains the most significant byte, and Blocking[1] contains the least significant byte.
ErrorRecoveryPagePresent
Indicates, when set to zero, that the read/write error recovery mode page might not be present. When set to 1, it indicates that the error recovery page is present.
Reserved1
Reserved.
Reserved2
Reserved.
Remarks
This structure holds data for the feature named "Random Readable" by the MMC-3 specification. Devices that support this feature allow the initiator to read blocks of data on the disk at random locations. These devices do not require that the initiator address disk locations in any particular order.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddmmc.h (include Ntddcdrm.h) |