Programming Forums > Application Development > C

BungalowBill · Dec 5th, 2005, 8:05 AM

Does anyone have any tips of creating a FAT. Basically i'm trying to simulate a file system like in a USB stick or something and want to do this right.

The memory will be simulated by an array of 1024 blocks which can be either file data (bytes), directory data, or FAT data connecting the blocks of a file.

However some blocks are special:
Block 0 will be data about the whole file system
Blocks 1 and 2 will be the FAT
Block 3 will be the root directory.

The rest of the blocks will be either data or directory.

Any tips or pieces of code that'll help me out? Cheers.

Prm753 · Dec 5th, 2005, 9:54 AM

msdn.com is nice for code tips and snippets of code, but I don't think people will want to code this for you.

Navid · Dec 5th, 2005, 10:26 AM

While we're on the FAT topic,

I have this commpressed file that holds a file that's over 4GB. My computer, being FAT32 can't hold a file that's over 4GB. Is converting to NTFS the only solution in this case? Or is there another way around it?

Polyphemus_ · Dec 5th, 2005, 1:04 PM

Quote:

Originally Posted by Navid

While we're on the FAT topic,

I have this commpressed file that holds a file that's over 4GB. My computer, being FAT32 can't hold a file that's over 4GB. Is converting to NTFS the only solution in this case? Or is there another way around it?

You could split the file up into multiple files with winrar or winzip. If you don't want that, converting to NTFS is indeed the only way, but don't worry - it takes not more than 5 minutes.

nnxion · Dec 5th, 2005, 10:56 AM

Navid, no I think it's the only way..

To OP (BungalowBill): Can you not format the drive to a FAT filesystem? Like in an OS.
The FAT32 filesystem specification can be downloaded. You might find some information here.

Navid · Dec 5th, 2005, 2:08 PM

So, I should covert to NTFS and then simply covert back to FAT32? Will I lose anything during the process?

Polyphemus_ · Dec 5th, 2005, 2:12 PM

Quote:

Originally Posted by Navid

So, I should covert to NTFS and then simply covert back to FAT32? Will I lose anything during the process?

If you use the right software, nothing will be lost. I prefer Partition Magic for such stuff myself. Make sure your OS supports NTFS, though.

Navid · Dec 5th, 2005, 2:21 PM

Can't I use DOS though?
I found this command at: http://www.microsoft.com/technet/arc...eploy/fat.mspx

(Toggle Plain Text)

CONVERT C: /FS:NTFS

EDIT: My OS is WindowsXP Home, which i think is NT5.

Ooble · Dec 5th, 2005, 3:24 PM

You can't convert back like that, but yes, that'll work.

Navid · Dec 5th, 2005, 9:09 PM

Alright thanks guys. And sorry BungalowBill, I didn't mean to hi-jack your thread.

Dec 5th, 2005, 8:05 AM	#1
BungalowBill Programmer Join Date: Dec 2005 Posts: 40 Rep Power: 0	FAT creation Does anyone have any tips of creating a FAT. Basically i'm trying to simulate a file system like in a USB stick or something and want to do this right. The memory will be simulated by an array of 1024 blocks which can be either file data (bytes), directory data, or FAT data connecting the blocks of a file. However some blocks are special: Block 0 will be data about the whole file system Blocks 1 and 2 will be the FAT Block 3 will be the root directory. The rest of the blocks will be either data or directory. Any tips or pieces of code that'll help me out? Cheers.

Dec 5th, 2005, 9:54 AM	#2
Prm753 Professional Programmer Join Date: Oct 2005 Location: United States Posts: 447 Rep Power: 4	msdn.com is nice for code tips and snippets of code, but I don't think people will want to code this for you. __________________ The world's first athletic computer geek! The home of PrProgramsStudios How not to post a question: <-- Please don't reply

Dec 5th, 2005, 10:56 AM	#5
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	Navid, no I think it's the only way.. To OP (BungalowBill): Can you not format the drive to a FAT filesystem? Like in an OS. The FAT32 filesystem specification can be downloaded. You might find some information here. __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

Dec 5th, 2005, 2:21 PM	#8
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	Can't I use DOS though? I found this command at: http://www.microsoft.com/technet/arc...eploy/fat.mspx (Toggle Plain Text) CONVERT C: /FS:NTFS CONVERT C: /FS:NTFS EDIT: My OS is WindowsXP Home, which i think is NT5.

Dec 5th, 2005, 3:24 PM	#9
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	You can't convert back like that, but yes, that'll work. __________________ Me :: You :: Them

Dec 5th, 2005, 10:26 AM	#3
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	While we're on the FAT topic, I have this commpressed file that holds a file that's over 4GB. My computer, being FAT32 can't hold a file that's over 4GB. Is converting to NTFS the only solution in this case? Or is there another way around it?

Dec 5th, 2005, 2:08 PM	#6
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	So, I should covert to NTFS and then simply covert back to FAT32? Will I lose anything during the process?

Dec 5th, 2005, 9:09 PM	#10
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	Alright thanks guys. And sorry BungalowBill, I didn't mean to hi-jack your thread.

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Programming Forums > Application Development > C

FAT creation