So before I do. I made a nandroid backup,and made a backup of my apps and data as well. Should I now format data/system or wipe data/system? What is the difference? I really want to try cm7
SysAdmNj said:
So before I do. I made a nandroid backup,and made a backup of my apps and data as well. Should I now format data/system or wipe data/system? What is the difference? I really want to try cm7
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wipe data/factory reset and then go to advanced and wipe dalvik cache then you're good to go.
Sent from my Desire HD using XDA App
So, we all know how to flash a ROM and the various steps you should do to ensure a clean install.
Dalvik, cache, data, and system should be wiped. Minus factory reset (which does data and system) for updated builds of a ROM.
My question, which was prompted by installing Google Now, is what do each of these things actually do? It would be useful for example to know if I should clean the Dalvik cache when trying to install a less buggy version of the app, but as I have no idea what Dalvik is I have no way of knowing.
Would any knowledgeable person like to quickly break down what clearing the cache, data, system and Dalvik do?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
yes whenever you install a new ROM its better to have a good clean up before doing so...
factory rest will format or wipe cache and data...dalvik is inside cache so no need to do it again..the same for battery stats...format system is clearly just wiping system partition clean
....to wipe unneeded files in the dalvik cache, and so they will add up over time and take a lot of space and make the phone slower? Therefore it is a MUST to root one's phone?
Is that a correct assumption?
Thanks!
Try it. Use any file manager, go to /cache/dalvik-cache, and delete something, or everything.
The reason why it is called a cache is to speed up the phone.
It won't take up memory because of the way the phones storage is partitioned.
Sent from my DROID2 using xda premium
MarlonKaye said:
....to wipe unneeded files in the dalvik cache, and so they will add up over time and take a lot of space and make the phone slower? Therefore it is a MUST to root one's phone?
Is that a correct assumption?
Thanks!
Click to expand...
Click to collapse
For formating caches you could use file manager but it also need root permission...
And until you flash other custom rom you need not to wipe cache...
Apps cache is being created for the first time you boot your phone for better application launch...
So if you got a serious problem of force crash on stock rom, please do full reset...
Rom: CodeBox 1.4.0 Unofficial
Kernel: Horsepower 3.1 by fuss
If you like my post please hit thanks button...
You can use Factory Reset from Settings menu.
guys...
Guys, please read the original post.
Anyway, I tried unrooting my phone and deleting contents of dalvik cache. As expected, this is what happened:
1. Using ES File Explorer, WAS NOT ABLE to access the /data/dalvik-cache folder. It showed "Empty folder" or something like that.
2. Using Root Explorer, message that read "You're phone doesn't seem to be rooted, etc. etc. " (cannot access folder also)
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So here's my new set of questions:
1. Does factory reset erase dalvik-cache? (I would assume so)
2. If phone is unrooted, dalvik cache contents cannot be accessed or deleted (as I have proven). Does that mean they will add up over time (unless you factory reset the phone??) and cause problems like making the phone slower?
Hope that's clear.
Thanks!!!
What phone are you using? If for samsung, you can still wipe that in stock recovery even if you are unrooted...
Dalvik cache is in your /data partition, so yeah, it will be erased if you factory reset...your phone should manage dalvik by itself, it should not build up (except if you mess with it), so don't worry...
Ryuinferno, hello. I'm using Samsung Galaxy Ace. So how do I wipe the dalvik cache in stock recovery of unrooted phone? Are you referring to factory reset / data wipe? I know that already. I know that already. If you're referring to something else, please let me know.
Are you sure android phones manage the dalvik cache by themselves? Because sometimes when I uninstall an app, a related file would still be left in dalvik. I would then manually delete it or delete it using Titanium Backup. Also, why does Titanium Backup have an option to "Clean up the Dalvik cache..." if the phone manages it by itself?
Thanks!!!
Ryuinferno said:
What phone are you using? If for samsung, you can still wipe that in stock recovery even if you are unrooted...
Dalvik cache is in your /data partition, so yeah, it will be erased if you factory reset...your phone should manage dalvik by itself, it should not build up (except if you mess with it), so don't worry...
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Even wiping dalvik cache will cause apps to misbehave in you don't factory reset ...
If you are rooted , it will also have same effect ...
So do factory reset if you are in stock ROM and full wipe if you are on custom ROM ...
ROM : CodeBox Unofficial 1.4.0
Kernel : Horsepower 3.1.0-Fuss
If you like my post please hit like button...
Hmm...I can't remember too well as I left stock recovery too long...never left my phone unrooted......I think there is a wipe cache option in stock recovery but I am not sure whether will it wipe dalvik or not...
Titanium backup has an option to wipe dalvik because when changing ROMs/restoring apps, the current dalvik may be conflicting with the newly restored app...that is why you need to rebuild them...usually the old unused dalvik should be cleared upon a reboot...
"Hmm...I can't remember too well as I left stock recovery too long...never left my phone unrooted......I think there is a wipe cache option in stock recovery but I am not sure whether will it wipe dalvik or not..."
Maybe not? Because wipe cache and wipe dalvik cache are two separate options in ClockworkMOD Recovery, is it not? Or maybe in stock recovery, it DOES wipe dalvik as well....
Usually when installing roms, in the instructions you're told to wipe data, and then dalvik cache.
As far as I'm aware, since dalvik cache is IN /data it's wiped when data is wiped. So why is it a separate instruction?
rymate1234 said:
Usually when installing roms, in the instructions you're told to wipe data, and then dalvik cache.
As far as I'm aware, since dalvik cache is IN /data it's wiped when data is wiped. So why is it a separate instruction?
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I am too having the same question!!
All stock roms and some custom roms (depends on developers) have .odex files in for all app and framework files(inside system) these are files which contains some information about those apks and jar files and these odex files are written in dalvik partition and run at the boot and make boot faster. When you install a new rom these must be wiped since it is a part of the old rom
Sent from my GT-I9070 using Tapatalk
Hi.
I use a custom rom and I want to change to Purity. I want to make a real clean install, to clean every useless stuff on SD card.
I suppose I need to do a factory reset and wipe system partition.
But I prefer check here before.
Thank you.
Sent from my Nexus 5 using xda app-developers app
Backup what you want to keep on the SD card, then run the factory image following the guide on here to the T. You'll then be 100% stock with a clean, stock ROM
Hi,
The rom has nothing to do with your sdcard (this part of the storage), I mean a clean install is with a full wipe: Wipe Data/Factory Reset and Wipe Cache Partition/Dalvik cache, no need to wipe the sdcard, but if you want....