So I converted my Mac Mini's HDD to APFS not realising I made a mistake. I followed a tutorial online. I unmounted the disk from the Mac from Disk Utility and from the drop down menus at the top chose "Convert disk to APFS" the conversion seemed to have gone fine and it remounted the disk but when I try to boot the Mac it only boots into Recovery Mode. And when I hold the Option key the only drive I see is the recovery drive. I still see Macintosh HD in the Disk Utility menu but not when I try to boot. Any fixes? --- Post Merged, May 4, 2018 --- EDIT: I just had to use the Repair option in Disk Utility. All good now.