It suddenly struck me what the difference between the systems are : The two computers with the problems have SSDs and Apple_APFS without any issues have "Spinning Rust" and Apple_HFS
-- Bjarne D Mathiesen Korsør ; Danmark ; Europa ---------------------------------------------------------------------- denne besked er skrevet i et totalt M$-frit miljø macOS 10.13.2 High Sierra (17C205) 2 x 3,46 GHz 6-Core Intel Xeon ; 48 GB 1333 MHz DDR3 ECC ATI Radeon HD 5770 1024 MB