This question already has an answer here:
I am a Windows user and new to Ubuntu, the reason I installed Ubuntu because I need to copy data from a Mac formatted (3.5" internal) hard drive (hd) (via an USB hard drive enclosure) to local hard drive, so that later on I can copy those data to a external hard drive and I can read the data on a Windows PC (or a Mac)
So I plugged the Mac hd in, Ubuntu detects it immediately. I do a quick exploring and see that some folders inside the Mac hd are being protected, I can't see what inside, so the copy and paste using left mouse-click menu interface will not be working.
How do I copy everything from that Mac hd to a say Desktop folder on Ubuntu pc? Is there a sudo command or anything and by pass those permission issues?