EXFAT-FUSE(8)

💖 EXFAT-FUSE 💖

okay bestie, welcome to the exfat-fuse manual page — it lives in the System Manager's Manual section (section 8, for the people keeping score 👑), and it's literally the whole reason you can mount an exFAT filesystem on your lil Unix box. buckle up, this one's short but iconic ✨

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✨ NAME ✨

mount.exfat-fuse — mount an exFAT file system 🦋

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🌸 SYNOPSIS 🌸

mount.exfat-fuse [ -d ] [ -n ] [ -o options ] [ -V ] [ -v ] device dir

like. that's the whole summoning ritual. device is your drive, dir is where you want it to appear. simple as 🎀

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💅 DESCRIPTION 💅

mount.exfat-fuse is a free exFAT file system implementation and — this is the part everyone cares about — it has write support. no read-only sad girl hours here 💖

exFAT is a simple file system made by Microsoft, no cap. the whole point of it was to replace FAT32 and drop some of FAT32's limitations (FAT32 could never 💀). and if you've ever held an SDXC memory card in your hands? yeah, exFAT is the standard FS for those. main character of the memory card world fr fr 🌈

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🎀 COMMAND LINE OPTIONS 🎀

the options you can yeet at it from the command line:

• -d — turn on debug logging and don't detach from the shell. it stays right there with you. clingy in a helpful way 🫶
• -n — ignored. it's just there. vibes only. 🙈
• -o options — file system specific options go here. full deets in the FILE SYSTEM OPTIONS section below, keep scrolling bestie ⬇️
• -V — print the version and the copyright. flex check 💅
• -v — ignored. also just vibes. 😭

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🦋 FILE SYSTEM OPTIONS 🦋

these are the ones you pass through -o, and they're the ones that actually change how your mount behaves:

• umask= value — sets the umask. quick refresher: that's the bitmask of permissions that are not present, and you write it in octal. the default is 0 ⭐
• dmask= value — same idea as umask, but for directories only 🎀
• fmask= value — again same idea, but for files only 📁
• uid= n — set the owner for all files and directories. default is the owner of the current process 👑
• gid= n — set the group for all files and directories. default is the group of the current process 🫶
• ro — mount the file system in read only mode. no writing, no touching, look don't touch energy 🔒
• noatime — don't update the access time when a file is read. it's giving minimal effort, and honestly? valid ✨

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🔥 EXIT CODES 🔥

• Zero gets returned when the mount succeeds. slay 💖
• Any other code means an error happened. so if you get anything that isn't 0, something went wrong, periodt 💀

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💀 BUGS 💀

okay so this is the part where we hold hands and get real for a sec.

exFAT is a case-insensitive file system. that means some things can behave unexpectedly — for example, renaming a directory where you only change the case of some characters:

$ mv FOO Foo
mv: cannot move ’FOO’ to a subdirectory of itself, ’Foo/FOO’

and why does this happen, you ask? because mv sees that the destination exists — and on a case-insensitive file system, FOO and Foo are literally the same thing — so it adds the source basename onto the destination. then the file system gets this syscall:

rename("FOO", "Foo/FOO")

and it just returns an error. not a bug you can fix by yelling at it, it's just how case-insensitivity do 🙈

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👑 AUTHOR 👑

Andrew Nayenko — thank you for your service, king 🫶

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🌈 SEE ALSO 🌈

• mount(8) — go read it, iykyk 💜

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and that's the whole page bestie!! this one's from the System Manager's Manual, source/version EXFAT-FUSE(8), dated November 2015 — so it's vintage, and vintage is always iconic 🎀✨💖