I have an external hard drive with different MacOS installs that I run Diskwarrior off to repair computers that are stuck at boot up and can't get in to safe mode. I just created a Sierra partition but when I try to run Diskwarrior off it I get a message "DiskWarrior cannot be run from a disk that does not support permissions." DiskWarrior must be run from a Macintosh disk, such as a Mac OS Extended disk. PC and many other disk formats do not support permissions. I can get it to run fine on my 10.9 and 10.11 partitions. I checked the 10.12 partition and I have full read and write permissions enabled. I couldn't find anything online about this. Thanks for any help.