Database Users

Does wipe cache & dalvik cache destroy *any* user data?

5 mins. ago suddenly my phone powers off and never booted. I just got a nandroid backup and then wipe cache & dalvik. It works! But I am wondering if I lost any user data or not.
Any ideas?

No, you should not lose any data.

Correct. It does not wipe any user data. That is all in the /data partition. It will, however, make the following boot take a long time, as it rebuilds the Dalvik cache.

willverduzco said:
Correct. It does not wipe any user data. That is all in the /data partition. It will, however, make the following boot take a long time, as it rebuilds the Dalvik cache.
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What he said...

Blisspop: updating without wiping data

Hi,
I've recently done a succesful flash of Blisspop after a full wipe.
Now I want to update, but I don't want to do a full wipe. Simply installing the zip on-top gives a permanent booting screen. Can you update without starting from scratch?

Did you wipe cache & dalvik after flashing updated zip?

I did not. Is that the only required extra step? And will I lose data if I do so?

Kalenden said:
I did not. Is that the only required extra step? And will I lose data if I do so?
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No, you only lose data when you wipe the data partition
In recovery, you'll see different named partitions, cache, dalvik cache, system, data, etc etc
If you wipe System, you wipe the ROM
If you wipe Data, you wipe your user data
Caches are just temp partitions, safe to wipe any time, only side effect is a longer first boot as Android needs to re-cache everything
But yes, you do need to wipe the caches when updating to a newer version of the same ROM/Droid version, and no you won't lose your data
Here's how I do it:
Wipe System
Wipe Caches
Flash new ROM
Flash new Gapps
Flash SuperSU if needed
Wipe Caches again
Reboot
Result = New ROM with no loss of data
That's a clean flash, a dirty flash is how you did it without wiping System
If you are moving to a newer version of android, or a different ROM, wiping data becomes more necessary, especially if the move is to an older version of droid

Thanks. I'll try it out.

What's the difference between cache and app cache?

So, if I wipe cache in TWRP, the app cache as reported by the system remains. Just tonight I was able to wipe over 2GB of app cache within the system, something I thought I would have rid myself with the wipe cache function within recovery.

floepie said:
So, if I wipe cache in TWRP, the app cache as reported by the system remains. Just tonight I was able to wipe over 2GB of app cache within the system, something I thought I would have rid myself with the wipe cache function within recovery.
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That is because you're wiping the device's /cache partition, while app-specific cache is stored on the /data partition. So, It needs manual cleaning from within the app settings.

(help) need WIPA DATA

Wipe Data, Cache, Dalvik Cache and format /System
is necessary ""after""
or before ???
or both times when WE port the new rom ? ?
or why we do it if we not do it what happened?

When you decide to install a new ROM, then you have to do those wipes,
Cache and Dalvik Cache are related to every APK in the ROM, when you start boot the ROM for the first time, Dalvik cache indexes all APKs and cache it's dex files into the Cache partition, that happens only once, and you can actually see this when Android tells you it's "Optimizing Apps x of x",
So, what happens if installed a new ROM without wiping Cache and Dalvik Cache?,
Dalvik cache won't index the new APKs from the new ROM, and you'll end up having a ROM full of FC msgs,
So, that's why you need to wipe Cache and Dalvik Cache when you install a new ROM, before the ROM or after that won't matter, but don't boot up a new ROM without wiping those partitions.
Sent from my iPhone using Tapatalk

clearing system cache via twrp

I see dalvik / art cache and system, data
which one do I chose to clear system cache, without bricking my system?

You have only one option - dalvik.
Cache is old days from, it doesn't exist anymore on pies. If you try to wipe you'll get an error in TWRP.
System and data are speaking for themselves. Wipe system - brick phone, wipe data - loss of apps and personal stuff