Opening USB device 2nd parition

Hi everybody,

So far I have no problem accessing files on the first partition. However I would like to access files on the 2nd partition on an USB device. Any thoughts on how to achieve this?

Sincerely yours,
bobribbon

I think this isn't coded in libfat.

Try using libelm, perhaps it works with it (i'm interested about your results).

Sure it is. You just have to pass the starting sector of the partition to fatMount.

Lol, yes you're right. But how do you find the start sector?

Exactly... How do I find the startsector of a partition?

You have to hope the disk has a readable partition table, and parse it. Look in the libfat source code, partition.c contains a function called FindFirstValidPartition that parses the table looking for FAT partitions.

Thank you tueidj. I will try to implement some new feature in a personal mod of libfat (starting by correcting a memory leak i've found in libfat)

Mind sharing? I've run memory leak tests on my programs (mounting and unmounting different volumes) and haven't detected any.

You can have an exemple of memory leak detection here?

[forums.devkitpro.org]

But, the pb is that i can't find the memory leak just by reading the code of libfat. I hope the leak isn't in libogc or worst, in iosupport.h/iosupport.c


And yes, i can share the project. But before i need to explore libelm.

There's a bug in your code, that's what's causing the memory leak.

fatUnmount("sd"); is incorrect - that should be fatUnmount("sd:");

Thank you.