Ok, so after spending about 12 hours attempting to install android on "mystorage" using the guides of aafirocks and gardakkan, as well as any other info i could find, i have finally managed to install android and boot it for the first time. the thing is, i managed it only because i left out a few of the steps outlined in the tutorials. what i did was:
set up 3 partitions on mystorage (fat32 sized 6.9 gb, ext4 sized 1gb, and swap sized 257mb, all primary), then extracted ext4.tar.gz. so far i did everything as outlined in the tutorials. but it did not change anything in vold.fstab or init.rc. previously i had always changed them, and i got stuck on "android for omnia 2" screen. the startuptxt i used was the standard one, as given in the tutorials.
hope this helps anyone with a similar problem.