app2sd how does it works?

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hello every body i am new in the android community.
i've just got a htc hero.
i've rooted it at http://theunlockr.com/ by using the
How To: Root Your HTC Hero in One Click! methode.
now i've put the modaco custom rom in by useing the recovery image.
so i've put it in the sd rename it to update.
applyed it in the recovery image so i've got a new rom.
and what now? to put apps to my sd?

Back up your as card. Go into recovery loader again. Use the format as: fat / ext / swap
I think modaco and fresh both default aps2sd so nothing else is required other than removing and reinstalling your apps so they get put on the sd.

Good luck and make sure you do step 1!

so anytime you install an app from the app market, it will automatically install on your sd card? (i have modacos rom) and how can you check to make sure it does?

all of my apps are on my SD card, maybe with the exception of WiFi teether since it is in the rom and I think needs to be in /system/ to work.

It's nice, my apps are persistent with factory resets and rom flashes.

If I pull my SD card they stop working, if I put it back the spring back to life.

so you dont have to install any apps for this to work, you just have to partition the sd card?

1. Backup your SD card, the Repartition wipes everything out
2. Boot into recovery
3. Run the Partition Fat16/EXT/Swap
4. Reboot
5. Reinstall your apps so they are moved to the SD card.

In really basic terms we trick the phone into thinking nothing happened but we move the App directory to the SD card and point to the card instead of internal memory.

You have to understand how the linux kernel works to really understand the whole "don't have to install software". One of the things Linux beats the crap out of micro$oft about is "things just work".