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There is no way to have btrfs caps insensitive. So some software (poorly coded) could have capitalization issues that would not appear in NTFS that would in btrfs. But other than that I believe you are right (barring utilities specifically designed to interact with FS attributes)

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I've been running my Samba shares case sensitive for over a decade, only issue I've found is I can't rename "Foo" to "foo" without jumping through an extra hoop (add a letter or similar).

Perhaps if I ran some software off it I might find some more issues but, overall quite little. The difference in speed is immense though.

> There is no way to have btrfs caps insensitive.

There is no way to make NTFS case insensitive either, it being case insensitive in Windows is a Windows implementation detail.

Does that mean windows could make any file system case insensitive?

Any OS can "make a filesystem case insensitive"; for example in Linux you can do it if your kernel has support for it[1].

But again, that is a OS implementation detail thing, the underlying file system is still case preserving.

[1] https://www.collabora.com/news-and-blog/blog/2020/08/27/usin...

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