June 5, 20233 yr It is not currently possible to mount an ext4-formatted volume with the casefold feature. This appears to be because the CONFIG_UNICODE flag is not enabled in the kernel configuration.
September 27, 20232 yr Author I was hoping for at least a negative response. It seems like this could be addressed by recompiling a custom kernel, but I am unfamiliar with the process (though tech proficient in general). Can anyone advise for/against such action? I would like this feature so I can mount an SD card formatted on the Steam Deck as an unassigned device. If someone knows of an alternate workflow that would realize this I would love to hear it.
July 11, 20241 yr For anyone encountering this in the future, you can mount the a steam deck formatted filesystem by toggling casefold off via this command: sudo tune2fs -O^casefold <partition label, e.g. /dev/sdf1> Once you are done, unmount the filesystem and run this command to revert the change: sudo tune2fs -O casefold <partition label, e.g. /dev/sdf1>
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