Mac OS compatibility improvement

[203Null]

I have been getting a lot of reports with issues using TinyUF2 with Mac OS, but I'm unsure if they can be fixed.

A lot of time copy into the drive returns Unexpected Error (100093)
I also gotten some reports that the firmware isn't working correctly if the uf2 is >6mb.

I have no idea how to debug those, but I'm pretty sure other facing the same issue?

Also After copying, mac OS always complains about the disk not ejected properly. But I don't know if there are ways to fix this.

[colbyboles]

The big issue with UF2 in general right now with macOS Tahoe (26.0 / 26.1 as of this writing) is that it refuses to mount and show these small "suspicious" drives at all in the Finder, so a casual user will not be able to do an update.

you can see the UF2 disk waiting to be mounted at:

diskutil list

but you have to explicitly mount it to see it in the Finder:

diskutil mountDisk /dev/diskN

alternatively, you can not mount it and send the firmware directly:

sudo dd if=firmware.uf2 of=/dev/diskN bs=4096
sync

[203Null]

The big issue with UF2 in general right now with macOS Tahoe (26.0 / 26.1 as of this writing) is that it refuses to mount and show these small "suspicious" drives at all in the Finder, so a casual user will not be able to do an update.

you can see the UF2 disk waiting to be mounted at:

diskutil list

but you have to explicitly mount it to see it in the Finder:

diskutil mountDisk /dev/diskN

alternatively, you can not mount it and send the firmware directly:

sudo dd if=firmware.uf2 of=/dev/diskN bs=4096
sync

Thanks, I guess they can't be fixed for now smh.

I really wish TinyUF2 kept the HF2 interface, so at least the user can upload via a third-party app or something.

[hathach]

The big issue with UF2 in general right now with macOS Tahoe (26.0 / 26.1 as of this writing) is that it refuses to mount and show these small "suspicious" drives at all in the Finder, so a casual user will not be able to do an update.

you can see the UF2 disk waiting to be mounted at:

diskutil list

but you have to explicitly mount it to see it in the Finder:

diskutil mountDisk /dev/diskN

alternatively, you can not mount it and send the firmware directly:

sudo dd if=firmware.uf2 of=/dev/diskN bs=4096
sync

Hmm this issue is weird, though currently I only have intel macos (forgot which macos version it on, but rather out dated) and couldn't test this out.

[hathach]

I really wish TinyUF2 kept the HF2 interface, so at least the user can upload via a third-party app or something.

if you can make a PR for it we can surely add it. Though it can be disable by default e.g TINYUF2_HF2 = 0.

[203Null]

I really wish TinyUF2 kept the HF2 interface, so at least the user can upload via a third-party app or something.

if you can make a PR for it we can surely add it. Though it can be disable by default e.g TINYUF2_HF2 = 0.

I will look into it. But even if I add it, I can only make sure it works with esp32 sx target. Is that OK?

[hathach]

that is ok, I can refactor to make it work with other ports as well.