what is A2S for and how to use it???

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I've just installed the Paranoid-Jellybean 1.99
http://forum.xda-developers.com/show....php?t=1793180
on my EU HTC HD2

I can't anderstand what sd the idea behind program S2E, it seems its purpose is to move apps to SD but when used it this way then all newly installed Widgets disappeared What's more even without launching S2E in Settings thare are options to move individual apps to SD (not for all in fact)

it isn't talking about the normal fat partition on the sd card, you must have an EXT partition created before using the app.
What it does, is take the ext partition on the sd card and makes the system think that it is internal memory, thus giving you more 'internal' memory for apps and data and such like.
This isn't the same as choosing 'move to sd ' in the settings - apps options, as this moves the app to the FAT (windows) partition of the sd card. Some apps wont work when 'moved to sd', however they WILL work from the ext partition, because android thinks its internal.

So, if you haven't already got an ext partition, back up the contents of your current sd card (it will get wiped) then reboot into cwm, choose 'advanced - partition sd card' and choose a partition size. (512 or 1024 is usually plenty) then restart android and try the app again.

Any apps that you have already 'moved to sd', go move them back to internal, and the system should automatically move them from the FAT partition to the EXT partition.

Tahnk you for your explanation. Also I must apologize I confused the names of the programs - in fact its S2E rather than A2S (the previous post have written from memory). However probabely this s2e serves the same purpose, as it has such relevant commands:
Applications - Location: /data/app
Private apps - Location: /data/app-private
...
and so on, until:
Dalvik cache - Moving from /data to /sd-ext

So, I've chosen the first option and got displayed:
Application
Moving from /data to /sd-ext
Reboot is required!

and rebooted the phone, but the result was disappointing - several apps dissappeared including all Widgets!
Of course I've had ext3 partition previously set.

What was wrong?

Other question please: exactly WHAT is worth moving to SD Ext partition, Dalvik cache too?

yea they do the same/similar things - namely move parts of the system to the ext partition, and create symbolic links so that the system doesnt notice they've moved.

You seem to be moving your entire data folder to the ext, which i believe has an impact on boot performance, since the data partition wont be mounted straight away, and android needs it during boot.

I don't know a great deal about the various app2sd scripts, but the ones i've used normally only move the /data/app/ (your user installed apps folder) and the dalvik cache to the sd-ext partition.

Originally Posted by samsamuel

yea they do the same/similar things - namely move parts of the system to the ext partition, and create symbolic links so that the system doesnt notice they've moved.

You seem to be moving your entire data folder to the ext, which i believe has an impact on boot performance, since the data partition wont be mounted straight away, and android needs it during boot.

I don't know a great deal about the various app2sd scripts, but the ones i've used normally only move the /data/app/ (your user installed apps folder) and the dalvik cache to the sd-ext partition.

So won't it exert excessive load on SD card which could lead to some sort of instability or other issues?

Originally Posted by ioy

So won't it exert excessive load on SD card which could lead to some sort of instability or other issues?

better than exerting load on the nand and increasing the chances of bad blocks, right?

Originally Posted by samsamuel

better than exerting load on the nand and increasing the chances of bad blocks, right?

theoretically YES but then does it also apply for the whole Android ROM itself (please compare the neighbouring discussion "is NAND Android better than SD and why?")

Originally Posted by ioy

(please compare

no thanks, i have far more interesting things to do. i couldn't care less if there's excess load, though i'm pretty sure there isn't, since i've been running an ext partition for several months and no problems.

Have you understood me well? I've asked about the problem probably NAND ROMs themselves wear NAND memory too so would it be safer (for the device) to use SD ROMs (which write only on SD memory all the time)? How do you think, could it be the case?

i think if it were of any real benefit, people would be talking about it, but no one does. I guess its down to you, if YOU think it will help, then do it. If you don't, don't!
I guess battery drain would be teh real deal maker/breaker. I havent used sd android, but i believe it to be (in general terms) a little less stable, more prone to slowdowns, and harder on teh battery. But thats all anecdotal evidence, as i said, ive never booted sd android.

(edit - i must say, in humour, not meaning offence, that between this thread and your other thread, you sound like a guy who just bought a sports car and wants to cycle to work to save wear and tear on teh car )