_NTFS_BIOS_PB Struct Reference

#include <filesystem.h>

Data Fields
uint16_t	bytespersector
	512,1024,2048,4096 - Usually 512
uint8_t	sectorspercluster
	1,2,4,8,16,32,64,128 - Usually 8
uint16_t	reservedsectors
	Must always be 0 on NTFS.
uint8_t	reserved1 [3]
	Must always be 0 on NTFS.
uint16_t	reserved2
	Must always be 0 on NTFS.
uint8_t	mediaid
	F8 for Fixed media, F0 usually for Removable media.
uint16_t	reserved3
	Must always be 0 on NTFS.
uint16_t	sectorspertrack
	Sectors Per Track for Int13.
uint16_t	numberofheads
	Number of Header for Int13 eg 1.44MB = 2.
uint32_t	hiddensectors
	Number of Hidden Sectors preceeding Partition.
uint32_t	reserved4
	Must always be 0 on NTFS.
uint32_t	reserved5
	Not used by NTFS - Usually 80008000.
int64_t	totalsectors
	Total Sectors on the drive.
int64_t	mftcluster
	Start Cluster of $MFT.
int64_t	mftmirror
	Start Cluster of $MFTMirr.
int32_t	clustersperfile
	Clusters Per File Record (Can be negative) (F6 = 1024 - See Notes).
int32_t	clustersperindex
	Clusters Per Index Record (Can be negative) (F6 = 1024 - See Notes).
int64_t	volumeserial
	Volume Serial Number.
uint32_t	checksum
	Checksum.

Detailed Description

NTFS BIOS Parameter Block

Field Documentation

bytespersector

uint16_t bytespersector

512,1024,2048,4096 - Usually 512

sectorspercluster

uint8_t sectorspercluster

1,2,4,8,16,32,64,128 - Usually 8

reservedsectors

uint16_t reservedsectors

Must always be 0 on NTFS.

reserved1

uint8_t reserved1[3]

Must always be 0 on NTFS.

reserved2

uint16_t reserved2

Must always be 0 on NTFS.

mediaid

uint8_t mediaid

F8 for Fixed media, F0 usually for Removable media.

reserved3

uint16_t reserved3

Must always be 0 on NTFS.

sectorspertrack

uint16_t sectorspertrack

Sectors Per Track for Int13.

numberofheads

uint16_t numberofheads

Number of Header for Int13 eg 1.44MB = 2.

hiddensectors

uint32_t hiddensectors

Number of Hidden Sectors preceeding Partition.

reserved4

uint32_t reserved4

Must always be 0 on NTFS.

reserved5

uint32_t reserved5

Not used by NTFS - Usually 80008000.

totalsectors

int64_t totalsectors

Total Sectors on the drive.

mftcluster

int64_t mftcluster

Start Cluster of $MFT.

mftmirror

int64_t mftmirror

Start Cluster of $MFTMirr.

clustersperfile

int32_t clustersperfile

Clusters Per File Record (Can be negative) (F6 = 1024 - See Notes).

clustersperindex

int32_t clustersperindex

Clusters Per Index Record (Can be negative) (F6 = 1024 - See Notes).

volumeserial

int64_t volumeserial

Volume Serial Number.

checksum

uint32_t checksum

Checksum.

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The documentation for this struct was generated from the following file:

• ultibo/filesystem.h