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 Post subject: FAT32 root directory
PostPosted: Sun Mar 03, 2019 1:37 pm 
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Joined: Wed Jan 02, 2019 5:18 am
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How many entries there is in FAT32 ?
In the BPB the value of Root Directory Entries is '00 00'
How can i calculate how many entries i have in my disk ?


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 Post subject: Re: FAT32 root directory
PostPosted: Sun Mar 03, 2019 2:19 pm 
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Rocobo wrote:
How many entries there is in FAT32 ?
In the BPB the value of Root Directory Entries is '00 00'
How can i calculate how many entries i have in my disk ?


The same way as with any other (non-root) directory or file.
Follow the cluster chain starting at BPB_RootClus (I'm assuming you have fatgen103.doc).


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 Post subject: Re: FAT32 root directory
PostPosted: Sun Mar 03, 2019 2:29 pm 
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Joined: Wed Jan 02, 2019 5:18 am
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alexfru wrote:
Rocobo wrote:
How many entries there is in FAT32 ?
In the BPB the value of Root Directory Entries is '00 00'
How can i calculate how many entries i have in my disk ?


The same way as with any other (non-root) directory or file.
Follow the cluster chain starting at BPB_RootClus (I'm assuming you have fatgen103.doc).



no....
I just want loop over all entries and print the files name
so i need to know how many entries there is in the disk


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 Post subject: Re: FAT32 root directory
PostPosted: Sun Mar 03, 2019 6:59 pm 
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The only way to tell how many entries is to read the entire root directory and count them.


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 Post subject: Re: FAT32 root directory
PostPosted: Sun Mar 03, 2019 11:21 pm 
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Joined: Sat Nov 22, 2014 6:33 pm
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Location: USA
What my friends are saying is that FAT32 does not have a fixed root directory like FAT12 and FAT16 do. The FAT32 root directory is just like a sub-directory, it has Allocation Units and can be of any size up to the disk size (in theory).

Ben
- http://www.fysnet.net/osdesign_book_series.htm


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