• End partition head,
• End partition sector,
• Number of hard disk sectors allocated for partition.
Hard disk partitions are described in the Partition table in two ways simulta-
neously: (1) in CHS co-ordinates (Cylinder – Head – Sector; limited and
obsolete variant) – coordinates of initial and end partition sectors, and (2)
partition heading and its length in sectors.
Each record of the Partition table contains a partition boot patch flag indicat-
ing to the main loader what partition to boot. The boot patch flag can be as-
signed to one partition only.
At the lowest (byte) level MBR structure containing the master boot record
and the Partition table can be described as follows:
• Bytes 000h – 1BDh – load code of active partition’s bootsector,
•
Bytes 1BEh – 1CDh, 1CEh – 1DDh, 1DEh – 1EDh, 1EEh – 1FDh –
partition records,
•
Bytes 1FEh – 1FF – Partition Table signature equal to AA55h.
3.2 Creating Primary Partition
Using the FDISK utility supplied with your Windows operating system (ena-
bling large disks support), we will create the Primary partition at a 0.97 Gb
capacity (or 1000 Mb) on the selected hard disk.
To see changes in the Partition table contents, select the hard disk with the
newly created partition for viewing. If we select the created partition for
working, the Partition table will be unavailable for viewing. The Partition
table contains information about the entire hard disk. If you select a disk
partition for working, DiskEditor will allow you to browse only the space
allocated for that partition, and accordingly, to look at its information only.
20 Chapter 3 : Main Window View Modes
