Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

FAT 32 address pattern

Posted on 2002-03-22
3
Medium Priority
?
258 Views
Last Modified: 2010-04-26
In FAT32 format , is the sector address pattern as per A or B.

Pattern A is arranged in sequence
Pattern B is arranged in skew / oblique


< Pattern A >

Cluster #      C/H/S     C/H/S
          Start     End
============================
1          1/1/1   to     1/1/8      = 8 sectors x 512 = 4096 bytes
2          1/1/9   to     1/1/17     = 8 sectors x 512 = 4096 bytes
3          1/1/18 to     1/1/26     = 8 sectors x 512 = 4096 bytes
4          1/1/27 to 1/1/35     = 8 sectors x 512 = 4096 bytes
5          1/1/36 to 1/1/44     = 8 sectors x 512 = 4096 bytes
6          1/1/45 to 1/1/54     = 8 sectors x 512 = 4096 bytes
7          1/1/55 to 1/1/63     = 8 sectors x 512 = 4096 bytes
8          2/1/1   to 2/1/8
9          2/1/9   to 2/1/17
10          2/1/18 to 2/1/26
...etc


< Pattern B >

Cluster #      C/H/S     C/H/S
          Start     End
============================
1          1/1/1   to     1/1/8      = 8 sectors x 512 = 4096 bytes
2          2/1/9   to     2/1/17     = 8 sectors x 512 = 4096 bytes
3          3/1/18 to     3/1/26     = 8 sectors x 512 = 4096 bytes
4          4/1/27 to 4/1/35     = 8 sectors x 512 = 4096 bytes
5          5/1/36 to 5/1/44     = 8 sectors x 512 = 4096 bytes
6          6/1/45 to 6/1/54     = 8 sectors x 512 = 4096 bytes
7          7/1/55 to 7/1/63     = 8 sectors x 512 = 4096 bytes
8          1/1/9   to 1/1/17
9          2/1/18 to 2/1/26
10          3/1/27 to 3/1/35
...etc
           
0
Comment
Question by:hhheng
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 

Author Comment

by:hhheng
ID: 6891769
Without further elaborating , I think the above-question offer some confusions.
My intention is to know how a sector address is recorded. After a low-level format, sector and tracks are built-up then format by OS. When formating , how are  the sector / address numbered,  this is the question I am interested. If contigously, does it means that say, first sector address is "1/1/1" in "C/H/S format" and the next sector address is "1/1/2" and  so forth OR skewingly , first sector address is "1/1/1" followed by "2/1/2" and so forth.
Those who have a  disk utility that can read a sector at byte level will be able to view the address sector by sector.
0
 
LVL 2

Accepted Solution

by:
vipat earned 200 total points
ID: 6892870
In those days FAT16 still typically being used, to minimized the disk accessing time, the DOS disk sectors are (logically) formed in the pattern "A". But, since disk size is growed more than 8GB limit, the LBA disk-accessing method is now used instead of CHS method. (For example, FAT32X partition no longer uses CHS values in partition table anymore.)

To prove this, simply boot your system into command-prompt only mode, and run disk-editor software (which also support LBA disk accessing method). If you don't have any startup disk yet, get one at www.bootdisk.com first. ;)
0
 

Author Comment

by:hhheng
ID: 6893005
Thanks and cheers
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Does your iMac really need a hardware upgrade? Will upgrading RAM speed-up your computer? If yes, then how can you proceed? Upgrading RAM in your iMac is not as simple as it may seem. This article will help you in getting and installing right RA…
Stuck in voice control mode on your Amazon Firestick?  Here is how to turn it off!!!
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question