First off, on the bug front, these issues should be resolved in macOS 26.1, which we released to beta last week (25B5042k). Please test on that beta, and if you find any problem, file a new bug and post the bug number back here. Are we actually talking about the same bug though? Yes, I believe so. Coe 256 seems to be an issue only for the root drive of exFAT. The issue here was actually introduced as part of a security fix (r.151029665) and it affected exFAT, some SMB mounts, and the / AFPS mount. In both cases, the high-level issue is the same (basically, stat wasn't returning what it expected), but the underlying cause was different. In the case of exFAT, the file system is basically “too simple, so it's basically returning a synthetic (invented) value because the file system doesn't really have an alternative it can provide. In the case of APFS, the issue is that the way that data and system volumes are merged means that you can get different values for the same object, depending on exactly how yo
Topic:
App & System Services
SubTopic:
Core OS
Tags: