Link2SD, SD partition error, bootloop and dev/block/mmcblk1p2...help!

[AC Question]

Hey all!

I´m trying to make Link2SD work on my Sony Xperia Arc S
with stock ROM.
The idea was to create a partition on my 14 GB SD and then move my apps there.

I made the partition with MiniTool, Ease US and even with Clockworkmod, tried different size and different formats (FAT32, Ext2, 3 & 4).

Phone is rooted, all the correct apps are there (busybox, adb shell, i also have both TWRP and ROM Manager), SU gave permament permission to all the involve d apps.

I also tried with init.d, but i always got the same error:

failed to mount dev/block/mmcblk1p2.

Sometimes i also got no error, but when i reboot the phone, it goes on bootloop. Once i remove the SD, it works again.

I´ve searched trough the forum a lot, but i didn´t find anything useful for my case, nothing suits (like to install init.d or try with different partition tools or different formats, like i said).

I tried to format everything and to install Link2SD again, but i still got the same error.

Please there´s anyone that can help me to find a solution somehow? I´m quite desperate right now

Thanks again

Max