So far I've tried my google fu to figure out exactly what I've done on the terminal (I'm running OS X Yosemite 10.10.3), but I'm not satisfied with my current understanding on how mounting and mount points work on a Macintosh machine... this is pretty much what happened:
I tried to manually install rEFInd per the instructions found here (http://www.rodsbooks.com/refind/installing.html#osx), and so far have done the following on my terminal:
:~ felix$ mkdir /Volumes/esp :~ felix$ sudo mount -t msdos /dev/disk0s1/Volumes/esp :~ felix$ sudo mkdir -p /Volumes/esp/efi/refind
My current understanding is that I made a "mount point" inside my local user directory (User "Felix") mounted an msdos type filesystem onto the EFI, and then made a nested directory within the esp folder that I made on the first command. However, I can't find these directories in the felix directory. What did I do? What exactly did I mount, and where did I mount it? Why can't I find /Volumes/esp?
If I want to start over again and reverse all the changes I've made with these three commands, what should I do?