If you use the JF v1.50 build it functions as both A2SD or not, so it looks to see if you have an Ext2 partition on the card if so it mounts it else it runs as a normal non-A2SD build.
"symlinks" are what links the newly created partition's location to the location on the data partition. (i.e. you moved your /data/data over to your card so it's new location will be system/sd/data the "symlink" will allow the OS to see this change.)
The cmds in the = Setting up your phone to work with Apps 2 SD (A2SD) = section that start like this:
ln -s /system/sd/app /data/app
ln -s /system/sd/data /data/data
ln -s /system/sd/dalvik-cache /data/dalvik-cache
Are your symlinks. So your linking the /data/app folder to your new location which is /system/sd/app (which is your ext2 partition on the card).
When I did this process I actually installed the OS first (I used the JF v1.50) and then I created the partitions but you should be able to do it the other way also.
As for the issue connecting via telnet. Do you have your Wifi radio turned on? Also are you connected to a wireless router via your phone?
Well the different b/w say TheDudes v0.93 Non-A2SD and TheDudes v0.93 A2SD build is nothing minus the ability to have A2SD. As for the differences b/w the haykuro's, JF's, TheDudes builds I attempted to put the big hitters in the table located above.
For me I've used them all and I find myself always coming back to JF's build so far. Seems the most stable for me and on the faster end of the builds out.
Ok, so if I understand this correctly, if I installed a build that says "A2SD" I'm good to go? no to other settings? the system will automatically start moving apps to SD? I don't think that's the case because I just installed a 3mb app and it went from 46mb to 41mb, sorry if I'm making people go in circles but I'm not too saavy when it comes to commands, if I do need to input commands, do I do it from the phone or from the pc? what are the steps? Thanks in advance.
BTW, I tried using the apps2sd from XDA but it kept making my phone go into a loop, so that's a no go.
As for the issue connecting via telnet. I do not have my Wifi radio turned on? Also I am not connected to a wireless router via my phone.
Also, I still can't do a Nandroid backup, I don't have the ALT+B option on the recovery menu.
I know, I'm full of issues. Aside from that everything seems to be working fine.