On 22/09/17 20:07, Pádraig Brady wrote: > Is is a wait or a cpu spin? > Could you use the equivalent of strace on your platform to see what's happening? Offlist Jack sent a profile showing /usr/bin/FILE was waiting on input. That was the result of a silly typo in the script, which the attached should fix. I don't know what that command does, nor why it's specifically a problem on APFS, but hopefully this fixes things. cheers, Pádraig.