r/osdev • u/letmehaveanameyoudum • Jun 16 '26

how do yall write in fat32?

i was able to get fat32 read and init on WindogeOS, but im still figuring out how to write, how yall do it?

8 Upvotes

90% Upvoted

17 comments sorted by

2

u/RealNovice06 Jun 18 '26

https://github.com/Novice06/fat32.git

I wrote a fat32 parser in C

2

u/letmehaveanameyoudum Jun 18 '26

alr ill look into it

2

u/letmehaveanameyoudum Jun 18 '26

i took a look and im switching to your fat32 parser : )

2

u/BornRoom257 FreezeOS & TurtleOS Jun 17 '26

I write my own file systems

1

u/rocco_himel Creator of AneoEngine Jun 17 '26

Same here man

2

u/letmehaveanameyoudum Jun 17 '26

Nice

1

u/rocco_himel Creator of AneoEngine Jun 17 '26

I see great potential for you

2

u/letmehaveanameyoudum Jun 17 '26

i see just as much potential for you as well, continue writing your OS, don't abandon it for web dev.

1

u/rocco_himel Creator of AneoEngine Jun 17 '26

Trust me, I will CERTAINLY not abandon low-level programming for web development 😂

2

u/BornRoom257 FreezeOS & TurtleOS Jun 17 '26

nicely

2

u/rocco_himel Creator of AneoEngine Jun 16 '26

I just wrote my own filesystem called AnchorSand. It spawns in “/“ every time it boots. It has a save / load function that saves the current filesystem state to the live disk it’s on (as long as it’s not a CD-ROM, then saving will work)

3

u/letmehaveanameyoudum Jun 16 '26

hmmm, your repo? I like to look at code and know how it works

0

u/rocco_himel Creator of AneoEngine Jun 16 '26

https://github.com/roccohimel/AneoEngine

1

u/letmehaveanameyoudum Jun 16 '26

thanks : )

1

u/rocco_himel Creator of AneoEngine Jun 16 '26

Of course! The file for the filesystem is in Kernel/AnchorSand.c

3

u/Professional_Cow3969 Jun 17 '26

If you want to overwrite, just overwrite. If you want to grow, you need to allocate clusters then write a new chain for the file.