I’m honestly not sure. I’m not an expert. But I do believe you need to use apple’s utility to set up the MBR if you want to run MacOS. You can use fdisk to initialize the MBR, but only if you want to single-boot OpenBSD
Sent from my iPhone > On Nov 2, 2017, at 5:58 PM, SFM <r...@sfm-consulting.at> wrote: > > I don’t quite get how can I have an operating system running smoothly (Mac OS > 8.6) in a disk that has an obviously corrupt partition table ? More > important, most probably disk utility messed up my partition table, so why > should I trust it now to do the job well ? Could wiping the drive out using > the same utility really be the solution ?