FAT short for File Allocation Table is the name of a computer file system architecture and a family of industry standard file systems utilizing it.
Questions tagged [fat]
188 questions
0
votes
1 answer
How to add class method to prototype in ES7
I am confused about one of the syntaxes in ES7. I define a class as:
class Employee2 {
Ename = "Rahul";
printName = () => {
console.log(this.Ename);
}
}
Since classes are syntactical sugar over existing prototype concept, I expected that…
Rahul Agarwal
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3 answers
how FAT let me know what to load next cluster hint by file's first cluster?
I am reading brokenthorn's OS Dev tutorial
http://www.brokenthorn.com/Resources/OSDev6.html
I stuck at this for several days.;
to load "stage2.sys",
search root directory "stage2 sys".
root directory contains file name and starting cluster…
kim taeyun
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How can I create a backup copy of an existing FatFs partition?
I'm working on a project which uses FatFs lib to mount a partition in an External Flash memory, to store image and audio files. The application, anyway, is vehicular, and the file system sometimes looses its memory references due to the unavoidable…
ulissesBR
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Assembly language msdos source code equation between cluster and FAT
Going through old MS dos source code on github, I found some peculiar comments as shown below.
;Now we must load the FAT from the disk. Here's how we
;find out where it starts:
;FAT cluster 0 = media descriptor = 0F0h
;FAT cluster 1 = filler…
user11771136
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1 answer
How to read FAT Table in Assembly Language
NC - Norton Commander
I should write a program like NC.
I need to access Fat Table in Assembly to show files and directories in my program.
Does anybody know how I can access Fat in assembly( both floppy and Hard Disk )
What Interrupts should I…
Ali Bahrami
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1 answer
C Programming with ARM - Output and input of struct to a file
I am having a bit of a problem with a struct within a program I am writing.
Background; I am developing code in C on an ARMv7 chip. The system has an SD card with FAT16 filesystem for file access.
I am using a library for FAT16 file read and write…
Draineh
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How to get U-boot to automatically load from FAT partition
I have an NXP board with U-boot and Linux on it. On start up, if I don't type anything, the U-boot will automatically start Linux using a linux image. Everything is on my SD card which is plugged into the board.
The SD card has a FAT partition on…
ALec
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0 answers
I am trying to read entries from the boot sector of a disc image that was partitioned with a FAT16 file system
I am trying to find out, from a provided disc image things like, how many bytes does the boot block occupy, how many bytes are there in each sector, and how many sectors are there in each cluster(each allocation unit)?
I need to write code in python…
user3358064
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1 answer
FAT and NTFS file systems comparison clarifications
I began studying about file systems, especially about FAT* and NTFS.
In FAT file systems clusters may be Data or Directory clusters, and the starting cluster number of the Root directory is always known, as prior to FAT32 it was fixed at formatting…
LppEdd
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2 answers
Having trouble identifying what is wrong in this FAT
So I'm going through the table starting at 0000. I see 006E and that sends me down to row 0060 column E. I see 00A2 which sends me to row 00A0 colum 2. I see 00EA which sends me to row 00E0 row A. I see FFF0 indicating end of cluster. Is this…
C. Sullivan
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0 answers
File.LastWriteTime Different NTFS FAT?
I have this function for validate a file copy :
it an important function of backup so i have to be sure both file are exactly the same (not implemented security and atribut yet).
Here it is:
public class fileCheck
{
public bool…
Zwan
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1 answer
Having trouble understanding how to index a FAT table for finding new cluster in FAT12 filesystem
I am not getting why we divide current cluster and adding result to itself.
Here is the code
mov ax, WORD [cluster] ; current cluster
mov cx, ax ; copy current cluster
mov dx, ax ; copy current cluster
…
kamlesh dangi
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1 answer
To develop FAT file system and USB host mass storage by keil middleware 5 without rtx?
I am developing (with lpc 1768 ) FAT file system and USB host mass storage by Keil middle wares version 5.
In the uvision "manage runtime environment"says must to enable rtx.
I have two questions:
is it possible do that without rtx (by keil middle…
Rasool
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- 3
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2 answers
How to extract from FAT16 filesystem image in Python
I have a image which is FAT (16 bit), I want to parser the image to file, so that i can get the files in image.
Derrick zy
- 29
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0
votes
1 answer
FAT - What is my first action once given a file that has 6 sectors?
Sorry if any of this sounds dumb, I'm trying to get a better understanding on how a FAT directory reacts when certain actions are given.
For example:
if my FAT directory has 16 entries
0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Then file 'a' (lets give…
Bronson
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