ExFAT vs FAT32 (deeper mechanics)

CyberGonzo · 2013-01-23T00:57:55Z

Hi,I'm looking into ExFAT and as a first introduction I read through this pdfreverse-engineering-microsoft-exfat-file-system_33274 (actually half way through)It's getting a bit confusing and because it's been some time since I implemented FAT I'm not sure how different ExFAT is from FAT32. I feel I need to write some code first to see how things work rather than just reading text and not seeing the light.A decision I need to make now is whether to extend my existing FAT implementation or start fresh for ExFAT (if too different). Right now I'm enclined to start again for ExFAT because the differences seem too great and it would clutter my FAT32 code too much.To help me see the light I was wondering if anybody knows of a document / text that explains the *differences* between FAT32 and ExFAT on file-system level ? Or a document that explains what to add to an existing FAT32 implementation to support ExFAT (if that is at all possible).As I said, from what I read, it seems quite different, but I haven't compared directory table structures yet etc. and maybe they're closer related than I feel right now.Anyway, some input appreciated. I'm signing off. Reading that technical document while being tired is probably also not a good idea ;)

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CyberGonzo

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Topic starter 08/04/2013 7:03 pm

I finally got that beta out last week. So for those that want to check the ExFAT functionality, check out www.isobuster.com/news/isobuster_3.2_beta_release_notes
Usually after 2-4 weeks I release the final version as well.

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