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Assignment No. 04 Semester: Spring 2013 CS609: System Programming-Due Date: 05/Jul/2013

Assignment No. 04
Semester: Spring 2013
System Programming-CS609


Total Marks: 20


Due Date: 05/Jul/2013


Please read the following instructions carefully before submitting assignment:


  • You will submit your assignment before or on due date on VU-LMS.
  • Assignment should be completed by your own efforts it should not be copied from internet, handouts or books.
  • You should submit your .doc File via assignment interface at VU-LMS.
  • Assignment sent via Email will not be replied and accepted/graded in any case.
  • If the submitted assignment does not open or file is corrupt, it will not be graded.
  • You will submit solution only in document (.doc or .docx) File.



To understand the use of DMA.

For any query about the assignment, contact at cs609@vu.edu.pk

Assignment Questions


Question 1:                                                                                                                               Marks 10     

We read the contents of Drive Parameter Block and get the following information,


Number of reserved blocks = 2

Number of blocks in FAT = 5

Number of blocks in root directory = 8

Maximum number of blocks per cluster = 7


Now using the above information calculate the sector # for the following clusters.

1. 3b

2. 2a


Make appropriate assumption where needed.


Question 2:                                                                                                                               Marks 10     

Reserved sectors = 06H

Sectors per FAT = 81H


Using the above FAT 16 based information find the following


Starting sector of first copy of FAT

Starting sector of second copy of FAT

Starting sector of root directory



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Replies to This Discussion

@zeeshan naseer

question no .2 is correct and in question no.1 there should be 20 instead of 14

here No. of system area blocks= 2+ (5*2) +8= 14H

correct it and do further calculation

@sehar syed

the first question is not correct

here is the problem

No. of system area blocks= 2+ (5*2) +8= 14H

your calculation is wrong its 20 not 14

Bahe jan 14H = 20 in decimal so 14h is right here

sehar syed first question is 100% correct......

and second question i am trying to solving

i found it bit correct and bit dont understand. about Question 2 this is perfect solution because according to lecture notes it is matching with my studies.


For first question


2a =  154 H (IN HEXADECIMAL)

These are answer am i right.....


no ur answer is not correct check the correct solution of qno.2 from the file uploaded by saher syed and for q no. 1 do the correction as mentioned by me in previous comment to her

I hope you get it

g correct hen :)

plz koi correct solution upload kr do

thank u

14H bhi theek hy decimal system min 20 & hexadecimal min 14H he ata hy

I think sehar syed k dono question theek hy

yar koi second ka forumula share kare ....


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