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But yes, you do need to wipe the caches when updating to a newer version of the same ROM/Droid version, and no you won't lose your data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.
Related
Hey guys just a quick question about installing nightly builds on the nook. When Rom Manager asks whether to wipe data/cache and what not, if I select it, will it wipe the internal memory completely? leaving no user files behind? or will it only wipe the system files?
It will wipe everything and it will be a fresh install.
Sent from my LG Optimus V using Tapatalk
If you update, just wipe cache
It wipes the /data partition but doesn't wipe /sdcard /sd-ext or /met/emmc.
Sent from my MB860 using xda premium
EGM92 said:
Hey guys just a quick question about installing nightly builds on the nook. When Rom Manager asks whether to wipe data/cache and what not, if I select it, will it wipe the internal memory completely? leaving no user files behind? or will it only wipe the system files?
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Just wipe Davlik.
if boot is longer than normal after wipe, it's normal!
votinh said:
If you update, just wipe cache
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patruns said:
Just wipe Davlik.
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So... just wipe Davlik Cache is what you guys are saying?
Good question helped out a newb here
Jiv_au said:
So... just wipe Davlik Cache is what you guys are saying?
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Correct
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Jiv_au said:
So... just wipe Davlik Cache is what you guys are saying?
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Click to collapse
Note: wipe cache and wipe Dalvik cache are 2 different things.
+ wipe cache is a quick way to clean the current running ROM
+ wipe Dalvik is a completely clean.
After wipe Dalvik, next time it boots, it will take a lot longer time due to the device has to re-compile the whole thing before ROM start running and booting.
I think I need to drop a few lines about wipe cache/Dalvik.
As I posted above, I said it wiped clean.
Apparently, I am NOT 100% correct.
I just updated to nb198, wiped cache (formatting /cache) then wipe Dalvik cache.
After done updating ROM, booting up, I expected everything clean, completely fresh.
It's not the case, I went to Market and all old search history were still shown. Not only with Market but other apps too.
So
a. either wipe cache/Dalvik is NOT completely clean wipe or
b. it was completely clean but somehow, those old cache info, which stored somewhere I don't know, get automatically restored back.
Okay, I did a quick read of the FAQ for CWR, and came across these:
Wipe cache partition
Wipes the cache partition of the device to clear all the data accumulated there over use. This is often used before installing a new ROM, app, kernel or any similar mod via recovery.
Wipe Dalvik Cache
Allows you to wipe the cache for the Dalvik virtual machine (the custom-built Java virtual machine for Android).This is required before most ROM installations and at other occasions too, for fixing some problems.
So, I'm taking this guide on board and will wiping Cache AND Davlik. So that's two steps prior to installing a new CM7 nightly build.
votinh said:
I think I need to drop a few lines about wipe cache/Dalvik. *snip*
a. either wipe cache/Dalvik is NOT completely clean wipe or
b. it was completely clean but somehow, those old cache info, which stored somewhere I don't know, get automatically restored back.
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You didn't happen to store them in uSD card? Or perhaps app data/cache are separate from system data/cache...
Will look into it further...
Hi,
So I am new into android and flashing. I performed now happily flashing 10 flashes, using sammobile stocks and custom roms, using odin and philwiz.
I did several hard formats, cleared cache, wiped data through recovery, but I noticed something...
Data is not really deleted.
When I flash for example custom rom, I firstly do factory reset, then clear cache and wipe data, but after flashing custom rom, there are still remaining folders from previous rom
How come, why? How to completely remove this.
Phone2GO said:
Hi,
So I am new into android and flashing. I performed now happily flashing 10 flashes, using sammobile stocks and custom roms, using odin and philwiz.
I did several hard formats, cleared cache, wiped data through recovery, but I noticed something...
Data is not really deleted.
When I flash for example custom rom, I firstly do factory reset, then clear cache and wipe data, but after flashing custom rom, there are still remaining folders from previous rom
How come, why? How to completely remove this.
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Click to collapse
You mean folders on your internal storage? You should delete them manually.
Or do you mean that there are still folders left on the /system partition? Then you are not wiping properly. A factory reset = wipe cache, wipe dalvik and wipe data. A full wipe also includes the /system partition.
Phone2GO said:
Hi,
So I am new into android and flashing. I performed now happily flashing 10 flashes, using sammobile stocks and custom roms, using odin and philwiz.
I did several hard formats, cleared cache, wiped data through recovery, but I noticed something...
Data is not really deleted.
When I flash for example custom rom, I firstly do factory reset, then clear cache and wipe data, but after flashing custom rom, there are still remaining folders from previous rom
How come, why? How to completely remove this.
Click to expand...
Click to collapse
Wiping with custom recoverys won't delete folders and stuff.
Go to settings -factory reset.
When you want to be sure that really EVERYTHING is deleted you have to burn your device ^^
Sent from my GT-I9505 using XDA Free mobile app
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.
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Hi, I'm from Nougat 4.5.14 and these are the steps I made:
1. Flash codeworx then reboot to twrp
2. Wipe cache and dalvik
3. Install OS 5.0.2
4. Install magisk
5. Wipe cache dalvik
6. Reboot to system
However after rebooting to system it started bootlooping so I decided to reflash OS and wipe data as recommended. So I power off the phone then hold volume down + power to boot to recovery. However when I boot to recovery, file folders started to become random names like its encrypted. Luckily I backed up my internal storage and data so I'm okay to flash everything but can someone help me how to fix the twrp random file names and the steps for reflashing the OS?
EDIT: I rebooted to recovery, wiped dalvik, cache, and data. flashed OS 5.0.2, wipe dalvik cache, flashed magisk, wipe dalvik, reboot to system and it does not proceed to circling dots. So what I did is just, wipe dalvik, cache, data, flashed OS, wipe again dalvik cache, boot to system and it proceeds to circling dots however it takes so long that I can consider this as bootloop. I'm very tempted to wipe everything (data, system, internal storage, cache, dalvik) then just flash again the OS but I don't know if it would work so I hope someone could give me some steps how to fix this
Edit 2: This is solved now: What I did is just after trying the flash OS with no magisk, I booted to system. However, i just dont boot at all so I decided to boot to recovery again, but this time the recovery is the stock one. I wipe everything I could including cache, system reset, and data (music pics etc) and it booted to the system in no time but everythings lost.
You have to format data... Not just wipe it. From TWRP go to format data, write yes, and let it format everything. Then transfer over to the phone all the fil a you need (ROM, kernel, no verity zip) and flash them as per the instructions of your rom thread. You should be fine.
panooos said:
You have to format data... Not just wipe it. From TWRP go to format data, write yes, and let it format everything. Then transfer over to the phone all the fil a you need (ROM, kernel, no verity zip) and flash them as per the instructions of your rom thread. You should be fine.
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What I did is just after trying the flash OS with no magisk, I booted to system. However, i just dont boot at all so I decided to boot to recovery again, but this time the recovery is the stock one. I wipe everything I could including cache, system reset, and data (music pics etc) and it booted to the system in no time but everythings lost.
Edit: nvm you've solved it
Peshyy said:
Edit: nvm you've solved it
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You can still show other solutions as others may need it sometime
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