CODEWITHSUNDEEP
parsingfilesystemsfat32
user3139046
user3139046

Reputation: 21

FAT32 - size of the root directory

I am trying to parse the root directory of FAT32 in order to get a dir list in the root folder.

So I need to go over all the directory entries in the root directory and parse them. My problem is that I don't know when to stop the iteration - How to get the size of the root directory?

I noticed that there is a byte in the boot sector - the number of the entries in the root - but in FAT32 the value is always 0, So how can i get the size of the directory?

Upvotes: 2

Views: 2939

Answers (1)

mockinterface
mockinterface

Reputation: 14880

The short integer at address 17 of the boot sector is 0 for FAT32 by definition, it's non-zero only for older FATs. The integer at address 44 should instead point you to the first cluster where the root directory resides. (That cluster is usually cluster #2.)

For FAT32 your code should treat the root directory as any other (non-root) directory.

Upvotes: 1

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