> … had some chats with Apple engineers and I got the impression that (a) it is known that 10.12.6 won't fully support APFS volumes created by 10.13, and (b) it's currently not planned to release a 10.12.7 update with an updated APFS driver that would solve all this. …
Incidentally, APFS is excruciatingly slow compared to HFS when booting from rotational media on USB 2.0. I know, that's an edge case but it's the only hardware combination I had available for testing.
@bmike apple.stackexchange.com/questions/22590/… I guess, your best hope is for an open source implementation of APFS. Or maybe an open source extension … honestly, it's so long since I looked in any depth at Apple's documentation, I can't recall what was said about the possibility of extensibility.
diigo.com/0a4tdo it's disappointing to have confirmation that El Capitan will in no way support Apple File System. A few months ago I wondered whether there might be at least read-only support.
The small print that follows that paragraph is contradictory. And … I can't find evidence in the Wayback Machine, but I suspect that the contradictory small print was not in an earlier edition of the article.
@HugoRune if it helps: parts of Apple's support documentation were, or are, misleading. Generation of application-specific passwords does not require two-factor authentication.
Found: [Apple Service Toolkit - EC IT Desktop Support - Emory College of Arts and Sciences Wiki](https://wiki.as.emory.edu/display/ECITDT/Apple+Service+Toolkit) AST also features in [Building An Apple Toolkit – Landon Dickens … Asbury University](http://www.aikcu.org/wp-content/uploads/2014/07/appletoolkit-Dickens-Asbury.pdf) (2014-06-11)
It's an entertaining Mac. I keep it only for test purposes. Could/should have returned it to to the local AASP for the specialist test when the board replacement was followed, so soon, by the keyboard/trackpad issue but I just never got round to it.
Thanks. Plus a few minutes ago I realised that the unexpected stop of the Mac probably left some cruft in NVRAM; the keyboard backlight was on (and uncontrollable, because the keyboard is unusable, LOL) so I just did a reset (unavoidably re-enabling SIP) followed by Recovery OS 10.13 to again disable SIP :-)
Also @bmike I wonder whether I should add, to the question, a note that the Mac no longer responds to its internal keyboard or trackpad – an issue that arose not long after replacement of the main board under Apple's free programme for that class of Mac (note to self: find the link).
Is there any evidence or technical documentation to support the notion that System Integrity Protection can cause excessive use of the CPU by kernel_task in some situation?
Background
No battery. All Apple operating systems on an external hard disk drive, limited (by the MacBookPro8,2) to USB 2...
(It was closed with a standard hint about answering one's own question. If it can be reopened, with my edition and then my answer, then it can probably remain open.)
Hi, I edited the closed question at askubuntu.com/q/765130/25036 and I have a prepared answer but I did not realise that no answer can be added whilst the question is closed. Sorry!
The Comms Room
The Comms Room
Is there any evidence or technical documentation to support the notion that System Integrity Protection can cause excessive use of the CPU by kernel_task in some situation?
Background
No battery. All Apple operating systems on an external hard disk drive, limited (by the MacBookPro8,2) to USB 2...
