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How Do I Do an EXT4 Wipe?

i got virtuous unity 2.37 and want to install 2.39. its suggested i do a ext4 wipe before nstalling 2.39. i want to make sure i'm doing this right.
so, to do a full ext4 wipe, i must boot into recovery and then wipe all data, cache, then go to advance and wipe dalvik? is this correct?

Maybe you must go in Wipe / Format menu,then format sd-ext.

Go to mount and storage, click format sd-ext and click yes. Your ext4 partition is now wiped.

itachi1706 said:
Go to mount and storage, click format sd-ext and click yes. Your ext4 partition is now wiped.
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hi itachi.. does your advice regard wiping the sd card?
also, someone suggested that an ext4 wipe involves going to Wipe/Format and selecting wipe data/factory reset, wipe dalvik cache, format system, format data, format cache and format boot. is this true?

trapzz said:
hi itachi.. does your advice regard wiping the sd card?
also, someone suggested that an ext4 wipe involves going to Wipe/Format and selecting wipe data/factory reset, wipe dalvik cache, format system, format data, format cache and format boot. is this true?
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It does not affect the FAT partition of the SD card. Only the Ext partition. And by wiping data, dalvik, formating system, data, cache and boot, you are literally doing a full wipe of the phone which people normally do when they change from 1 Rom to another.

itachi1706 said:
It does not affect the FAT partition of the SD card. Only the Ext partition. And by wiping data, dalvik, formating system, data, cache and boot, you are literally doing a full wipe of the phone which people normally do when they change from 1 Rom to another.
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thats exactly why im doing a full wipe.. to upgrade my rom to a higher version. but your way of wiping data seems like it involves wiping data from the sd card, which is risky and unnecessary when installing/upgrading a rom. and it can wipe out the rom on the sd card that you want to install anyway. so then whats the point'?

trapzz said:
thats exactly why im doing a full wipe.. to upgrade my rom to a higher version. but your way of wiping data seems like it involves wiping data from the sd card, which is risky and unnecessary when installing/upgrading a rom. and it can wipe out the rom on the sd card that you want to install anyway. so then whats the point'?
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I don't mean changing to a higher version, I mean changing Rom (like from cyanogen to miui) . If you are upgrading to a higher version you do not need to wipe data. All you need to do is just wipe cache and dalvik, boot and system too if you want. This way you will get updated to the latest version while still retaining your application data.
And yes, technically you do wipe the sdcard, but only the EXT partition, which is where your apps are placed in if you use A2SD+. Your FAT partition, which is the one recognised by the computer and where you put all your data in, is not affected. Hence it will not wipe out the Rom you are trying to install on the sdcard.
Sent from my HTC Original Desire using Tapatalk

Wondering why my data transferred over when I installed CM10.1.

Before I installed CM10.1 my phone was a stock Verizon Samsung Galaxy SIII with JellyBean 4.1.1 on it. I had all of my apps, pictures, etc. on it. (I also have no External SD card). I ended up rooting the phone and installed ClockWorkMod I pushed wipe/factory reset within the ClockWorkMod menu (up/power/home). I also wiped the caches and Dalvik cache. I then installed CM10.1. Once CM10.1 was installed I went to settings > backup & reset and then did a Factory data rest. This did yet again another factory reset with CM10.1.
I am wondering how in the world I still have all of my 500 images / videos in my Gallery that were on my original stock JellyBean 4.1.1. Could someone please tell me. Also, please tell me what I should have done to get a completely fresh installation without a single thing from the past. The only thing I guess I could have done was a factory reset when I was on JellyBean 4.1.1 to wipe everything, then install CM10.1.
(BY THE WAY I always have Back up my data, backup account, Automatic restore all UNCHECKED)

The factory data reset doesn't wipe the InternalSD, it just removes apps and settings and puts the phone back to how it came out of the box (settings wise). To delete all the data on your internal SD card, go to Mounts and Storage and you'll see an option for "format /data and /data/media (/sdcard)". That will delete everything on your internalSD.
Here's the catch, though. If you don't have an EXTERNAL SD with the rom you want to flash on it, you'll wipe off whatever rom you were going to flash, leaving you with a phone that has nothing to "boot up".
If you want to start clean, wipe /system, /data, /cache, and dalvik cache, flash your rom, then format the internal SD, don't do it the other way around.
I think that'll work....someone else chime in if I'm wrong about wiping sd after rom intall (that'll get rid of the /0 folder...could cause a problem booting up...)
The easiest way is to just buy an external sd card....doesn't have to be big (2 gig), put your flashable zip on it, wipe /system, /data, /cache, internal sd, and dalvik cache, then flash the zip on the external.

letinsh said:
The factory data reset doesn't wipe the InternalSD, it just removes apps and settings and puts the phone back to how it came out of the box (settings wise). To delete all the data on your internal SD card, go to Mounts and Storage and you'll see an option for "format /data and /data/media (/sdcard)". That will delete everything on your internalSD.
Here's the catch, though. If you don't have an EXTERNAL SD with the rom you want to flash on it, you'll wipe off whatever rom you were going to flash, leaving you with a phone that has nothing to "boot up".
If you want to start clean, wipe /system, /data, /cache, and dalvik cache, flash your rom, then format the internal SD, don't do it the other way around.
I think that'll work....someone else chime in if I'm wrong about wiping sd after rom intall (that'll get rid of the /0 folder...could cause a problem booting up...)
The easiest way is to just buy an external sd card....doesn't have to be big (2 gig), put your flashable zip on it, wipe /system, /data, /cache, internal sd, and dalvik cache, then flash the zip on the external.
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I actually have an external SD card where I keep CM10.1 and gapps for JellyBean 2.4.1. So I can just go into mount and storage and click every single format option there except for the external SD one right. Then I can install CM10.1 and gapps. Right?

HunterT said:
I actually have an external SD card where I keep CM10.1 and gapps for JellyBean 2.4.1. So I can just go into mount and storage and click every single format option there except for the external SD one right. Then I can install CM10.1 and gapps. Right?
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yeppers. That's the best way to make sure you're starting so fresh and so clean, clean.

[Q] HI i got a question.

Hello i want to do the Data2SD mod on my asus tf300.
Formatting your MicroSD:
Open GParted. With no knowledge of Linux this is all still self explanatory.
In GParted- I formatted the first partition to 3gb Fat32
The second partition should be formatted to Ext4 filesystem. Flag it as BOOT. LABEL the partition as data2sd. Make it the remaining size of the MicroSD.
Your MicroSD is ready. Have all backups and flashable zips on the fat32 partition of the microsd.
Boot up your TF300T to recovery.
Here I did a complete wipe of the Tablet.
Install CleanRom 3.0.3
For the option I chose NO KERNEL. Nova Launcher, Play Store as only apps. I did not disable fsync.
After installation is complete, wipe the cache.
Flash data2sd for CleanRom
Wipe Cache
Flash TF300T.zip (unters kernel)
Wipe Cache
Flash Recovery Mod
Do a full factory reset
I was reading this procedure and i understand everything, exept for the part at the end * Do a full factory reset *. I dont really understand if i should do the Wipe data/ Factory reset option in CWM Recover or what? WOnt that delete my ROM and Kernel ?

White data/factory reset will revert the phone to a freshly installed state.
It will not wipe system
Sent from my TF300T using Tapatalk HD

[Q] Internal Data Wipe pre Rom Flash

I am curious about doing an internal data wipe before flashing a new Rom. I am using TWRP 2.5.5. I am on the 4.2 bootloader and am about to update to the new CROMi. I know that doing a factory reset wipes dalvik, cache, and system, am I wrong in thinking this still leaves some stuff left over on your internal SD? If it does, I want to format all of it. I have the 4.2.1 bootloader, the CROMi rom, and a 4.2.1 stock nandroid backup I made in TWRP all saved on my external SD. What I dont understand is if I format all the data on the internal, how will the tablet know what to do when I boot it back up? Will TWRP be lost? If it does boot back up, what will it boot back up to? I just dont quite understand this internal SD formatting thing so well, so I am asking for some help so I can avoid doing something stupid. I know this is possible because I have read about other people doing it in the CROMi thread, I just want to make sure I am not missing anything

Your tablet has the following partitions (and some others which are irrelevant for this discussion):
- Bootloader
- Recovery
- Linux kernel
- Cache partition (/cache)
- System partition (/system)
- Data partition (/data)
The internal SD card is an emulation that uses /data/media as storage. So if you format /data, that removes all user data including the contents of your "internal SD card" emulation. I don't know why the normal "factory reset" somehow deletes only the rest of /data excluding /data/media. It may be convenient but not what I would understand as "factory reset".
If you format /system (which is not touched by a factory reset), you won't be able to boot Android unless you install a new ROM before you reboot. You don't need to format /system, it's done by the CROMI installer anyway.

_that said:
Your tablet has the following partitions (and some others which are irrelevant for this discussion):
- Bootloader
- Recovery
- Linux kernel
- Cache partition (/cache)
- System partition (/system)
- Data partition (/data)
The internal SD card is an emulation that uses /data/media as storage. So if you format /data, that removes all user data including the contents of your "internal SD card" emulation. I don't know why the normal "factory reset" somehow deletes only the rest of /data excluding /data/media. It may be convenient but not what I would understand as "factory reset".
If you format /system (which is not touched by a factory reset), you won't be able to boot Android unless you install a new ROM before you reboot. You don't need to format /system, it's done by the CROMI installer anyway.
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Aweomse! Thanks for helping me understand that a little better. My first ROM was CROMi 3.4.4 and I researched all this for about an entire week before I started this but I never fully understand the difference with formatting internal SD and factory reset. I have always installed the new ROM before rebooting anyway but it is nice to know CROMi does the system wipe for you. Didnt know that. If I were to do a complete wipe, would I need to install the most recent 4.2 bootloader prior to installing CROMi so it is there for CROMi to build on?
Oh, and btw your Kernels for CROMi are outstanding.

Turin87 said:
My first ROM was CROMi 3.4.4 and I researched all this for about an entire week before I started this but I never fully understand the difference with formatting internal SD and factory reset.
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There is even official TWRP documentation about wiping: http://teamw.in/whattowipe
(I personally have never used any of the wipe options so far, so I am just repeating what I read about it)
Turin87 said:
If I were to do a complete wipe, would I need to install the most recent 4.2 bootloader prior to installing CROMi so it is there for CROMi to build on?
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There is no "wipe bootloader" option, so there is no need to reinstall the bootloader. Wiping the bootloader would also brick your device and you would need nvflash to recover.

_that said:
There is even official TWRP documentation about wiping:
(I personally have never used any of the wipe options so far, so I am just repeating what I read about it)
There is no "wipe bootloader" option, so there is no need to reinstall the bootloader. Wiping the bootloader would also brick your device and you would need nvflash to recover.
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Good to know. Glad I didnt attempt that. My firmware version was .30 so nvflash was not an option for me. Thanks again for your help.

[Q] Format data/media and internal without losing ROM flash.zip

Now that the Note 5 has NO external SDcard support, how are we suppose to do a FULL and complete WIPE inside TWRP ?
I am talking about when I want to wipe data/media ( Format Data ) to install a new custom ROM on a completely wiped clean system.
I know it is not needed allwas but I like to format data sometimes to really remove all of the old system when I install a new ROM.
With the Note 4 you could just put the new ROM onto the SDcard and format the internal memory safely, and just flash the ROM
from the SDcard.
What can we do now ? If I format via TWRP it will wipe the internal SD area and wipe the new ROM also so I cant flash.
Thanks for any ideas.

re: full wipe
Thibor69 said:
Now that the Note 5 has NO external SDcard support, how are we suppose to do a FULL and complete WIPE inside TWRP ?
I am talking about when I want to wipe data/media ( Format Data ) to install a new custom ROM on a completely wiped clean system.
I know it is not needed allwas but I like to format data sometimes to really remove all of the old system when I install a new ROM.
With the Note 4 you could just put the new ROM onto the SDcard and format the internal memory safely, and just flash the ROM
from the SDcard.
What can we do now ? If I format via TWRP it will wipe the internal SD area and wipe the new ROM also so I cant flash.
Thanks for any ideas.
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Easy, do an advanced wipe in twrp and don't check mark internal storage or the OTG, only
check mark system, data, cache and dalvik and nothing except do a factory reset in twrp.
(doing it this way will not delete anything on the internal sdcard.
Good luck!
Have a nice Thanksgiving!

Haven't tried on this phone as I haven't rooted but adb push should solve your question.