Should I make a backup of OSX before bootcamping Windows 10 I have the Mid 2012 Macbook Pro. I want to know if I should make a backup of osx, before dualbooting windows 10. I already have all my files backed up to the cloud, but not osx. Do I need to do so? Also, how is the performance of windows 10 on a mac? Am I able to un-dualboot windows 10 from my mac, if i dont like it?
I would strongly recommend making a backup before setting up Boot Camp. Setting up Boot Camp involves repartitioning the disk into an OS X partition and a partition for Windows, but OS X doesn't know how to format the Windows partition into NTFS. So, it formats the Windows-to-be partition in the FAT32 format, and expects you to use the Windows installer for reformat it into NTFS. If you don't do this quite right, the Windows installer may reformat the OS X partition as well, causing complete data loss.

Thus, it's much safer if you have a full backup. Just in case.