Step W - Install Sailfish using only Windows (thanks mikecomputing)
After installing the MOSLO kernel, allow it to repartition your device. Disconnect and boot into Harmattan.
Wa - Download Sailfish image of choice
Wb - In Harmattan, install developer mode if you haven't already. Connect the phone as "Mass Storage Device"
Wc - Copy vgrade-sailfish_proximity-workaround.tar.bz2 to the root of your MMC.
Wd - Disconnect the phone from the PC.
We - Launch Terminal on Harmattan (or SSH in)
devel-su
rootme #or your root pass
cd /home/user/MyDocs/
ls
# you should see all your MyDocs and vgrade-sailfish_proximity-workaround.tar.bz2

mkdir /sailfish
mount /dev/mmcblk0p4 /sailfish
time tar --numeric-owner -xvjf vgrade-sailfish_proximity-workaround.tar.bz2 -C /sailfish/
# this will take a while as its extracting on the handset
# now exit out or jump to Enable root SSH access on Sailfish, starting at "mount -o bind /proc /sailfish/proc"

So up until this point everything was ok. Now i'm stuck on " mount /dev/mmcblk0p4 /sailfish"

It error our saying " mount: permission denied (are you root?)"

when i opened terminal i did devel-su and rootme with no errors. Any ideas?