IOCTL_DISK_REASSIGN_BLOCKS_EX control code

Maps defective blocks to a new location on disk. This request instructs the device to reassign the bad block address to a good block from its spare-block pool. A IOCTL_DISK_REASSIGN_BLOCKS_EX request allows for a larger number of blocks for assignment than the IOCTL_DISK_REASSIGN_BLOCKS request.

Input Parameters

The buffer at Irp->AssociatedIrp.SystemBuffer contains the REASSIGN_BLOCKS_EX values to be set. Parameters.DeviceIoControl.InputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the buffer, which must be >= sizeof(REASSIGN_BLOCKS_EX). Note that this structure contains a variable-sized array of block numbers. It is the caller's responsibility to make sure that the array of block numbers is sorted in ascending order.

Output Parameters

None

I/O Status Block

The Information field is set to zero. The Status field can be set to STATUS_SUCCESS, or possibly to STATUS_INFO_LENGTH_MISMATCH, STATUS_INSUFFICIENT_RESOURCES, or STATUS_BUFFER_TOO_SMALL.

Requirements

Version

Available starting with Windows 8.

Header

Ntdddisk.h (include Ntdddisk.h)

See also

REASSIGN_BLOCKS_EX

 

 

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