Interrupt 13H (INT 13H), ROM BIOS Disk Driver Functions

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Primary/Secondary (Master/Slave)

Status

Physical Drive Number and Description

Primary Master

Disk is Present

Physical Drive Number will be 80H. In this case the Hard Disk is called the First Hard Disk.

Primary Slave

Disk is Present

Physical Drive Number will be 81H. In this case the Hard Disk is called the Second Hard Disk.

Secondary Master

Disk Not Present

-------------------

Secondary Slave

Disk is Present

Physical Drive Number will be 82H. In this case the Hard Disk is called the Third Hard Disk.

  • If two Hard Disks are connected to the system: Similarly, if two Hard Disks are connected to the system the physical drive numbers will be as according to their attachment preferences. Following example illustrates it:

Primary/Secondary (Master/Slave)

Status

Physical Drive Number and Description

Primary Master

Disk is Present

Physical Drive Number will be 80H. In this case the Hard Disk is called the First Hard Disk.

Primary Slave

Disk Not Present

-------------------

Secondary Master

Disk Not Present

-------------------

Secondary Slave

Disk is Present

Physical Drive Number will be 81H. In this case the Hard Disk is called the Second Hard Disk.

  • If Single Hard Disk is connected to the system: Need not to think, if there is only one disk available, the physical drive number will be 80H.

Interrupt 13H (INT 13H), ROM BIOS Disk Driver Functions

The description of INT 13H functions has been given here. These functions should be learnt with care, as the misuse of these functions or use in lack of care or lack of knowledge, may cause big loss of data or many other problems. However if used in a appropriate and proper way these functions help to minimize the coding of your program and to make your programming simple and easy as well as.

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi
Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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