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BOOTDISK_INFORMATION_EX structure (wdm.h)
The BOOTDISK_INFORMATION_EX structure contains extended information describing the boot and system disks.
Syntax
typedef struct _BOOTDISK_INFORMATION_EX {
LONGLONG BootPartitionOffset;
LONGLONG SystemPartitionOffset;
ULONG BootDeviceSignature;
ULONG SystemDeviceSignature;
GUID BootDeviceGuid;
GUID SystemDeviceGuid;
BOOLEAN BootDeviceIsGpt;
BOOLEAN SystemDeviceIsGpt;
} BOOTDISK_INFORMATION_EX, *PBOOTDISK_INFORMATION_EX;
Members
BootPartitionOffset
Specifies the offset, in bytes, on the boot disk where the boot partition begins.
SystemPartitionOffset
Specifies the offset, in bytes, on the system disk where the system partition begins.
BootDeviceSignature
If the BootDeviceIsGpt member is FALSE, this specifies the signature for the disk's MBR partition table. Otherwise, this member is unused.
SystemDeviceSignature
If the SystemDeviceIsGpt member is FALSE, this specifies the signature for the disk's MBR partition table. Otherwise, this member is unused.
BootDeviceGuid
If the BootDeviceIsGpt member is TRUE, this specifies the GUID for the boot disk. Otherwise, this member is unused.
SystemDeviceGuid
If the SystemDeviceIsGpt member is TRUE, this specifies the GUID for the boot disk. Otherwise, this member is unused.
BootDeviceIsGpt
TRUE if the boot disk is formatted with the GPT partition table type.
SystemDeviceIsGpt
TRUE if the system disk is formatted with the GPT partition table type.
Remarks
On Windows XP and later, IoGetBootDiskInformation returns this structure to describe the boot and system disks.
Requirements
| Requirement | Value |
|---|---|
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
See also
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