Database Develop

[Q] Dalvik cache to be wiped..??

When flashing new custom roms..
We wipe...via recovery select factory reset & wipe cache partition..!!
But do we also wipe dalvik cache before flashing together with the above step..??
What about after flash (i always factory reset/wipe cache partition) avoid force close error issues..
Can we select wipe dalvik cache after flash too (never tried just want to know if any harm will come.. will anything go wrong)
* if i did select all three reset/cache partition/dalvik > will it erase/wipe nandroid backup..??? *

For a wipe rom, I always backup, do a factory reset, flash rom, do another factory reset, boot, then wipe cache and dalvik cache. The dakvik cache is a temporary working area and can be wiped anytime, I clear both caches weekly or if I get any hiccups. Nandroid backups are stored on your sd card so dont get touched, but best to copy them to PC, just in case, keep the last 2 or 3
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nandroid backup
So dalvik cache can be wiped any time...many thanks..
When i make nandroid backup via recovery mode, will android system only restore "last backup" or does it allow to choose "other backups"..???
(does it store multiple backups ? OR just one backup very last...
Thanks

You can choose which backup to restore. Standard practice is to wipe dalvik and cache BEFORE flashing.

Rash said:
When flashing new custom roms..
We wipe...via recovery select factory reset & wipe cache partition..!!
But do we also wipe dalvik cache before flashing together with the above step..??
What about after flash (i always factory reset/wipe cache partition) avoid force close error issues..
Can we select wipe dalvik cache after flash too (never tried just want to know if any harm will come.. will anything go wrong)
* if i did select all three reset/cache partition/dalvik > will it erase/wipe nandroid backup..??? *
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gsw5700 said:
For a wipe rom, I always backup, do a factory reset, flash rom, do another factory reset, boot, then wipe cache and dalvik cache. The dakvik cache is a temporary working area and can be wiped anytime, I clear both caches weekly or if I get any hiccups. Nandroid backups are stored on your sd card so dont get touched, but best to copy them to PC, just in case, keep the last 2 or 3
Sent using TCP/IP
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woolf clubs said:
You can choose which backup to restore. Standard practice is to wipe dalvik and cache BEFORE flashing.
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Couple things on which way to do this when loading custom ROMS. What is the proper order of wiping, restoring and dalving cache?

[Q] Difference between Factory Data Reset vs CWM Wipe

What's the difference between doing a Factory Data Reset and doing a wipe using CWM.
I'recently rooted my Note and now have CWM installed.
I plan on trying a few different ROMs (both newer stock ROMs and eventually custom ROMs) and read in most instances to per a wipe before upgrading.
I was wondering which wipe to use.
Also, if I install Titanium Backup, will it save everything including Contacts, Network settings, icon layouts, webpage favorites, appa and everything else?
Thanks

jeffs99 said:
What's the difference between doing a Factory Data Reset and doing a wipe using CWM.
I'recently rooted my Note and now have CWM installed.
I plan on trying a few different ROMs (both newer stock ROMs and eventually custom ROMs) and read in most instances to per a wipe before upgrading.
I was wondering which wipe to use.
Also, if I install Titanium Backup, will it save everything including Contacts, Network settings, icon layouts, webpage favorites, appa and everything else?
Thanks
Click to expand...
Click to collapse
Cant say surely about the difference between factory rest of data and CWM wipe. But can surely say to flash any rom you need to CWM wipe all the data and cache and dalvik cache from the recovery.
And Titanium Backup is for backing up and restoring all your apps and their associated data and market links. It doesn't backup contact (should auto backup to your google account or use any contact and sms backing app from market like - https://play.google.com/store/apps/details?id=com.idea.backup.smscontacts&feature=search_result) or
layouts . Icon layouts you can save by going to the backup settings of the launcher you are using and favorites you can again backup on your sd card.
Hit thanks if it helped

CWM recovery wipe cache, is just wiping cache files not data
while CWM recovery wipe data n Hard reset from setting - privacy - erase data(factory reset) is same
CWM function is useful when you unable to boot device normally.

Where is dalvik cache located ? Because if it's in the data or cache partition, then I don't see why I have to wipe dalvik cache after wiping data/cache...

Latoc said:
Where is dalvik cache located ? Because if it's in the data or cache partition, then I don't see why I have to wipe dalvik cache after wiping data/cache...
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System apps' dalvik-cache in /cache
Data apps' dalvik-cache in /data
Hence just by clearing the cache you clean the /cache space of system apps and not the dalvik cache of data apps.
So you require to do both - clean cache and clean dalvik cache.
Hit thanks if it helped!

Factory Reset will change your Android ID. Some apps with custom DRM may stop working. Factory Reset is also incompatible with some ROMs and causes some apps/files installed by CWM flashable ROMs to disappear.

I think both are same. Both format data and cache partition.
(that is why devs warned not to perform FDR on affected kernels)
With FDR you initialise the command from booted phone.
CWM Wipe is what you do from recovery mode.

dr.ketan said:
CWM recovery wipe cache, is just wiping cache files not data
while CWM recovery wipe data n Hard reset from setting - privacy - erase data(factory reset) is same
CWM function is useful when you unable to boot device normally.
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Click to collapse
thanks for this explanation!

[Q] Which wipe cache should be applied?

I changed my default font system and after reboot my phone freezes on boot animation and doesn't boot to system. Can anyone help me?
i have a backup from all my data and rom. If i had to flash plz let me know what should i do before? should i wipe cache, dalvik cach, factory reset and system? and then install zip?

ehsan453 said:
I changed my default font system and after reboot my phone freezes on boot animation and doesn't boot to system. Can anyone help me?
i have a backup from all my data and rom. If i had to flash plz let me know what should i do before? should i wipe cache, dalvik cach, factory reset and system? and then install zip?
Click to expand...
Click to collapse
all right
in recovery wipe cache, dalvik cache, factory reset and system and then restore your backup :highfive:

quack75 said:
all right
in recovery wipe cache, dalvik cache, factory reset and system and then restore your backup :highfive:
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I restored backup and then (not before) wipe cache and wipe dalvik-cache (without factory reset and system). No problem?
Now boot too system is OK...

ehsan453 said:
I restored backup and then (not before) wipe cache and wipe dalvik-cache (without factory reset and system). No problem?
Now boot too system is OK...
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if you have not changed rom is the same delete all or not
but a few wipe more never spoils

[Q] What is needed to do when installing new rom?

I have found this from here:
FIRST OF ALL DOWNLOAD THE ROM AND THE ADD-ONS PACKAGE.
1. Back Up all Your Important Files as the Rom is wipe-only.
2. Copy the rom to SD CARD and Boot to CWM revovery.
3. Click WIPE CACHE PARTITION -> wipe
4. Click Advanced -> Wipe Dalvik - Cache -> wipe
5. Click Mount Partition ->
a. Format /System -> yes
b. Format /Data -> yes
c. Format /Cache -> yes
6. Click Wipe Data/Factory Reset -> yes
7. Install the rom
Some ROMs need just wipe data/reset factory and wipe dalvik cache.
SO could someone tell what is needed to do and what those 5abc means and are they really "must to do"- things?

S3miniFin said:
I have found this from here:
FIRST OF ALL DOWNLOAD THE ROM AND THE ADD-ONS PACKAGE.
1. Back Up all Your Important Files as the Rom is wipe-only.
2. Copy the rom to SD CARD and Boot to CWM revovery.
3. Click WIPE CACHE PARTITION -> wipe
4. Click Advanced -> Wipe Dalvik - Cache -> wipe
5. Click Mount Partition ->
a. Format /System -> yes
b. Format /Data -> yes
c. Format /Cache -> yes
6. Click Wipe Data/Factory Reset -> yes
7. Install the rom
Some ROMs need just wipe data/reset factory and wipe dalvik cache.
SO could someone tell what is needed to do and what those 5abc means and are they really "must to do"- things?
Click to expand...
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All to be sure, to not have any conflicts...
With TWRP Recovery, go to "WIPE" section and check "Dalvik", "System", "Data", "Cache" swipe OK button and all it's done in one step
You just have to Install your new Custom ROM !!!

To be sure of the answer you can ask pulak861 as I see these are the instructions of his rom installation xD don't worry I think they're all ok just to make sure you don't have any issues while flashing your new rom and testing it then, I followed all these steps yesterday to flash the velocity rom and nothing unusual happened, before that the only thing I used to do was a wipe data factory reset, and wipe cache partition too.
Sent from my GT-I8190 using xda app-developers app

When installing an update (not a new version) of the custom rom you already have it's not completely necessary to do a full wipe/data cache, but if you have fully working back up, do it just to be sure everything works fine

[Q] Question about Mahdi Rom

In the instructions it says:
Installation instructions
- WIPE EVERYTHING (otherwise your device will be stuck at boot)
- Flash Mahdi-Rom zip from SDCard
- Flash your variants device patch
- Flash GApps zip from SDCard
- You may need to flash SuperSU to get root
- Reboot
- Don't restore system data using Titanium Backup!
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I have a few questions about this. 1) By "WIPE EVERYTHING", I just choose Wipe in TWRP and slide the slider (no additional options)? 2) I choose and flash all 4 zips at once, or do I flash them individually? 3) Why does it say not to restore from TiB?

_tyler_ said:
In the instructions it says:
I have a few questions about this. 1) By "WIPE EVERYTHING", I just choose Wipe in TWRP and slide the slider (no additional options)? 2) I choose and flash all 4 zips at once, or do I flash them individually? 3) Why does it say not to restore from TiB?
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Yes, that is a full wipe. Do not wipe internal storage, the stock slider settings (Data, Cache, and Dalvik) should work fine.

hiddenfive said:
Yes, that is a full wipe. Do not wipe internal storage, the stock slider settings (Data, Cache, and Dalvik) should work fine.
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Thanks, got it. Sucks that I have to reset all my settings to my liking, but Mahdi's got some pretty cool features that CM doesn't have.

hiddenfive said:
Yes, that is a full wipe. Do not wipe internal storage, the stock slider settings (Data, Cache, and Dalvik) should work fine.
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That is NOT a full wipe. You must wipe System as well. Click on Advanced Settings, then check Dalvik, Data, System and Cache (leave internal SD unchecked).
Sent from my g2 using XDA Premium 4 mobile app

graig79 said:
That is NOT a full wipe. You must wipe System as well. Click on Advanced Settings, then check Dalvik, Data, System and Cache (leave internal SD unchecked).
Sent from my g2 using XDA Premium 4 mobile app
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MOST ROM installations do not require you to do so, they already include a /system wipe in the process. In most cases, you are fine. :good:

hiddenfive said:
MOST ROM installations do not require you to do so, they already include a /system wipe in the process. In most cases, you are fine. :good:
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Yes, that is true, but some devs do not include the system wipe in the install process because it can cause a longer than normal install. You shouldn't give other users false information. Someone could really mess up their device using the info you provided.
Sent from my g2 using XDA Premium 4 mobile app

I always wipe "cache", "dalvik cache", "data", "system" when I want a "CLEAN" install. You'll lose all your settings and apps. You need to back up your apps using Titanium Backup or other similar apps to restore them. This is the safest way to install a new ROM
I always wipe "chace", "dalvik cache", and "system" when I want a "DIRTY" install where my apps and settings are kept. This is only safe to do if you're moving up or down the SAME ROM versions.
I use TWRP 2.7.0.0 for my recovery program as it's touch and with big buttons :silly: