This will need some explaining. I have an iMac. I was using it as my primary computer until a power surge played hookie with my power supply unit, and the iMac started shutting down randomly. I've ordered a new power supply, but so far it's been a month and still no sign. So, I've extracted the hard drive and plugged it into an external reader so that I can use my MacBook to access the data. The other day I was able to navigate to my old Lightroom library and access it, but now my Lightroom libraries are in a prohibited folder - permissions are blocking access. How did I manage to do it the other day? And if they are now prohibited, how can I get access to those folders now?