REASSIGN_BLOCKS_EX structure

Contains disk block reassignment data. This is a variable length structure where the last member is an array of block numbers to be reassigned. It is used by the IOCTL_DISK_REASSIGN_BLOCKS_EX control code.

Syntax

typedef struct _REASSIGN_BLOCKS_EX {
  WORD          Reserved;
  WORD          Count;
  LARGE_INTEGER BlockNumber[1];
} REASSIGN_BLOCKS_EX, *PREASSIGN_BLOCKS_EX;

Members

Reserved

This member is reserved. Do not use it. Set it to 0 (zero).

Count

The number of blocks to be reassigned.

This is the number of elements that are in the BlockNumber member array.

BlockNumber

An array of Count block numbers, one for each block to be reassigned.

Remarks

The REASSIGN_BLOCKS_EX structure supports drives that have an 8-byte Logical Block Address (LBA), which is typically required for storage devices larger than 2 TB. The REASSIGN_BLOCKS structure used with the IOCTL_DISK_REASSIGN_BLOCKS control code supports devices with up to a 4-byte LBA should be used where possible.

Requirements

See also

IOCTL_DISK_REASSIGN_BLOCKS_EX

IOCTL_DISK_REASSIGN_BLOCKS

REASSIGN_BLOCKS

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Build date: 4/16/2013