CS 609 ASSIGNMENT 5 SHARE HERE YOUR SOLUTION DUE DATE 3 JULY2012

[Adnan Majeed]

We have read an entry (16 bytes) from data part of the partition table which actually represents a partition entry. Following is the memory dump of that entry.

 

13AE:02B0         ............................................................................00  A6

13AE:02C0         C1  F8  0B  09  FF  FF  3F  00-00  00  FC  8A  38  01.

13AE:02D0         .......................................................................................

[Shahzaib]

00 represents non-active partition.
A1 C1 F8 represents the starting CHS address.
0B represents your partition type.
09 FF FF represents your ending CHS address.
3f 00-00 00 represents the starting sector.
FC 8A 38 01 represents total number of blocks.

A1 C1 F8 represents the starting CHS address.
A1 = Header
C1 = Sector
F8 = Cylinder
We read it as F8C1A1.
A1 is in hexadecimal. Its binary is 10100001. Its decimal value is 161.
Header is an 8-bit value. Leave it as here. I will tell you, why I wrote it here.
C1 is in hexadecimal. Its binary is 11000001. But we will take only the 000001 part, and leave the 11 the most significant bit.
000001 = 1 decimal
Why, because sector is an 6-bit value. The two bits that we left will be added to cylinder. And cylinder is therefore a 10-bit value.
F8 in binary is 11111000. Adding the two bits it becomes 11 11111000. Now convert it into decimal.
11 11111000 = 1016 decimal.
CHS(cylinder, head, sector )
CHS (1016, 161, 1)
Same way you calculate the ending CHS address.
FC 8A 38 01 represents total number of blocks.
Written as 01388AFC.
01388AFC hex = 20482812 decimal.

[Kashif Nadeem - MSCS]

Keep it up ........... Nice work

[Rania Puri]

where from u take this "A1" tell me please.................:(

[shehzad ahmad]

Not A1, it is actually A6

[shehzad ahmad]

which one is headr, sector and cylinder of the following?

09 FF FF.

3f 00-00 00.

FC 8A 38 01

[Rania Puri]

there is a confusion

can u tell me please y u take binary value of hexa n then convert it into decimal?

cannot we convert direct these values  from hexa to decimal???????

[Sana Sunny ツ]

here is solution,,,

[Naeem Masood]

baqi 2 ko bi decimal mein convert kr dete

[+ M.Tariq Malik]

S.No.	Question	Answer
1	Whether this entry represents an active partition? (3 marks)	No
2	What is the starting CHS address of the partition represented by this entry? Give answer in proper (C, H, S) format. (4 marks)	(1016, 161, 1)
3	What type of partition is represented by this entry? (3 marks)	FAT32
4	What is the ending CHS address of the partition represented by this entry? Give answer in proper (C, H, S) format. (4 marks)	(1023, 9, 63) Not confirm
5	What is the starting Sector of the partition represented by this entry? (3 marks)	63
6	What is the size of the partition represented by this entry? (in sectors) (3 marks)	20482812

[+ M.Tariq Malik]