DISK_INFO (Windows Embedded CE 6.0)

1/6/2010

This structure contains information about the disk device.

Syntax

typedef struct _DISK_INFO {
  DWORD di_total_sectors;
  DWORD di_bytes_per_sect;
  DWORD di_cylinders;
  DWORD di_heads;
  DWORD di_sectors;
  DWORD di_flags;
} DISK_INFO, *PDISK_INFO;

Members

• di_total_sectors
  Total number of blocks on the device.

• di_bytes_per_sect
  The size of a block in bytes.

• di_cylinders
  If the device supports cylinder/head/sector (CHS) addressing, the driver may report the number of cylinders; however, the FAT file system does not depend on this information.

• di_heads
  If the device supports CHS addressing, the driver may report the number of heads per cylinder; however, the FAT file system does not depend on this information.

• di_sectors
  If the device supports CHS addressing, the driver may report the number of sectors per track; however, the FAT file system does not depend on this information.

• di_flags
  The following table shows the available flags; you can use any combination of these optional flags.

  Flag	Description
  DISK_INFO_FLAG_MBR	The device has or needs an MBR.
  DISK_INFO_FLAG_CHS_UNCERTAIN	The device does not support CHS addressing; values for di_cylinders, di_heads, and di_sectors may be simulations, estimations, or not provided.
  DISK_INFO_FLAG_UNFORMATTED	The device requires a low-level format with the IOCTL_DISK_FORMAT_MEDIA. The FAT file system currently ignores this flag.
  DISK_INFO_FLAG_PAGEABLE	The device supports demand paging. Read and write requests are synchronous and do not involve memory manager calls, loader operations, or thread switches.

Requirements

See Also

Reference

Block Driver Structures
IOCTL_DISK_FORMAT_MEDIA

Other Resources

Block Drivers