Hey there,
Is there any option to remove SYStem Image partition and save 6GB?
You're referring to what you see on TWRP?
That's not a real (or separate) partition. It's something TWRP makes. Load Disk Info or Partition Backup from play store and it is not listed. This topic is discussed in one of the threads. You can't restore it, so don't bother making it in TWRP. If I remember correctly it can be used to make an EDL package or something similar. But it's not an additional partition to your standard System partition. It's made from that.
Sent from my ZTE A2017U using XDA Labs
No bro if open twrp and check backup option you can see a separate partition for SYSTEM IMAGE (6GB)
Read and research. I'm telling you look at disk part. It lists the partitions and it isn't there. It's something TWRP makes. Just don't check it when you do a backup. You can't do anything with it.
Sent from my ZTE A2017U using XDA Labs
---------- Post added at 06:38 AM ---------- Previous post was at 06:32 AM ----------
Quoting twrp.me (official twrp site) :
On most devices shipping with Android 6.0 or higher, the device maker has enabled dm-verity as a security measure. The device will signature check blocks of data on the system partition during boot at the block level. The usage of dm-verity prevents TWRP from being able to successfully restore a normal system backup. On most of these devices, you will see an option on the backup page for System Image. A system image backup takes up more space than a regular system backup, but the system image backup is a bit-perfect backup that, when restored, will not break dm-verity (assuming that you don't break dm-verity before making the backup).
It is the same partition as system, just done differently. You flash it with fastboot.
Sent from my ZTE A2017U using XDA Labs
Related
Just a quick question regarding a backup I created. I decided to back up on twrp only the system and boot partitions. I know that doesn't include my user apps and information but that is enough to allow me in the case of an emergency to restore a clean version of android correct?
Sent from my Nexus 4 using xda app-developers app
well, i think it might suffice but it is always good to have a toolbox and a factory rom with up to date set of gapps in case something goes wrong and need to go back to factory settings. if you dont have a pc at hand i would highly suggest to do a FULL nandroid backup, i know the storage maybe limited, but you'd rather be safe than sorry
tsmith9191 said:
Just a quick question regarding a backup I created. I decided to back up on twrp only the system and boot partitions. I know that doesn't include my user apps and information but that is enough to allow me in the case of an emergency to restore a clean version of android correct?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Yes.
Just make sure to factory reset** and wipe cache before booting it.
** in principle you could "dirty restore" the backup without wiping the contents of /data (especially /data/media, of course) but this would only be advisable if it was an essentially identical ROM as what was previously installed. For instance if you: did the backup, made a mod in /system or the kernel image, and then your tablet wouldn't boot.
Just tried taking a full backup in twrp but I got a message telling me that it failed as it was unable to mount data.
I get that this is due to the internal storage being encrypted.
During root, I didn't install dm-verity and force encryption disabler. If I flash the encryption disabler now, would that overcome the problem?
I've read advice that suggests wiping internal storage in twrp is the only way around it..
Thanks for any help.
Nope you need to format the data partition to make it accessible in twrp. NOTE: WIPING DATA WILL ERASE ALL YOUR APPS. Make a backup using titanium. Also copy all your files from internal storage. There is no other way around this :/ You will still have to flash the dm verity decrypter
BD_Man said:
Nope you need to format the data partition to make it accessible in twrp. NOTE: WIPING DATA WILL ERASE ALL YOUR APPS. Make a backup using titanium. Also copy all your files from internal storage. There is no other way around this :/ You will still have to flash the dm verity decrypter
Click to expand...
Click to collapse
Thank you for the reply.
I've just taken a full backup of apps and data with TiBu so that is sorted.
How should I proceed now? Twrp, wipe -> factory reset/advanced wipe/format and which options should I select in sub-menus please?
And then flash the dm verity decrypter after that.
Make sure to make a flashable zip file from the TiBu so you can restore those from recovery. First step is to go to the wipe menu and format data. Next swipe to factory reset. Then you can reboot to system to set everything up or install a custom rom if you wish (Make a backup of everything just to be on the safe side). Root if you want to and thats all
---------- Post added at 01:24 PM ---------- Previous post was at 01:21 PM ----------
And I forgot this: Welcome the the S7 Edge community ?
Hey guys and gals!
After a few weeks of using the phone, I now feel comfortable doing a Nandroid Backup (TWRP).
I used to do it all the time on my OPO Kitkat, but now with Android Marshmallow, it's quite different.
Here is my situation:
A2017U (us version)
TWRP 3.0.2.2 Installed
Bootloaded Unlocked
Rooted
Xposed Framework v87 installed
Update B29 installed
Inside TWRP>Backup I have many options:
1- Boot (64MB)
2- Cache (2MB)
3- Data(6969MB)
4- Recovery (64MB)
5- System (3723MB)
6- System Image (6144MB)
7- EFS (4MB)
By default, the "Boot", "Data" and "System" are selected, but after some reading I could also backup "System Image" for a near-perfect restore.
Also, some said to backup the EFS in-case it gets corrupted/damage, but some say it can brick your device.
Could anyone tell me what should I backup in case I get stuck somewhere in the future.
Thank you !!
P.S: I have removed any fingerprints and set the lock screen to "Swipe" (no pattern).
First, make sure to flash the official twrp. Do not keep the one we use to unlock bootloader.
There is no harm in backing up efs, in fact it is a good idea to do so. Just do not select it during a restore unless something has wiped your current efs and its the only way to fix.
I don't see a need to back up a full system image but couldn't hurt to at least have one for safe keeping.
Boutchoo said:
Hey guys and gals!
After a few weeks of using the phone, I now feel comfortable doing a Nandroid Backup (TWRP).
I used to do it all the time on my OPO Kitkat, but now with Android Marshmallow, it's quite different.
Here is my situation:
A2017U (us version)
TWRP 3.0.2.2 Installed
Bootloaded Unlocked
Rooted
Xposed Framework v87 installed
Update B29 installed
Inside TWRP>Backup I have many options:
1- Boot (64MB)
2- Cache (2MB)
3- Data(6969MB)
4- Recovery (64MB)
5- System (3723MB)
6- System Image (6144MB)
7- EFS (4MB)
By default, the "Boot", "Data" and "System" are selected, but after some reading I could also backup "System Image" for a near-perfect restore.
Also, some said to backup the EFS in-case it gets corrupted/damage, but some say it can brick your device.
Could anyone tell me what should I backup in case I get stuck somewhere in the future.
Thank you !!
P.S: I have removed any fingerprints and set the lock screen to "Swipe" (no pattern).
Click to expand...
Click to collapse
lafester said:
First, make sure to flash the official twrp. Do not keep the one we use to unlock bootloader.
There is no harm in backing up efs, in fact it is a good idea to do so. Just do not select it during a restore unless something has wiped your current efs and its the only way to fix.
I don't see a need to back up a full system image but couldn't hurt to at least have one for safe keeping.
Click to expand...
Click to collapse
How do I know which TWRP I installed ?
Do you have a link for the official TWRP for the Axon 7 ?
Its in the dev forum titled official twrp.
lafester said:
Its in the dev forum titled official twrp.
Click to expand...
Click to collapse
This? :
https://twrp.me/devices/zteaxon7.html
https://dl.twrp.me/ailsa_ii/
Edit: Looks like there's twrp-3.0.3-0-ailsa_ii Out for the Axon 7
But the official XDA Forum Page it's twrp-3.0.2-0-a2017u
After flashing the 3.0.2-0-a2017u, I now have in the backup sections: Modem (NON-HLOS) (95MB), I don't know if I should back it up.
Trying to make a backup of current rom, i see 2 options backup system and system image which do i use?
Sent from my LG-LS997 using XDA-Developers Legacy app
http://www.howtogeek.com/240582/how-to-back-up-and-restore-your-android-phone-with-twrp/
I usually backup Data, System, Boot, and Recovery (which may or may not mean anything, it just isn't large enough so I just added it to the list).
So I just updated TWRP (3.1.0-7 ), converted to F2FS, and flashed the latest build of PureNexus.
When booting into TWRP to perform a backup, there seem to be duplicate partitions (specifically System and Vendor), whereas before this was not the case. Although if I go to the Wipe option within TWRP, there are no duplicate partitions listed. Is this an issue within TWRP or by design? or have I jacked something up?
[x] = Selected by default
[x]Boot
[x]System
System Image
Vendor
Vendor Image
[x]Data (excl. storage)
Cache
Recovery
EFS
jacksheadache said:
So I just updated TWRP (3.1.0-7 ), converted to F2FS, and flashed the latest build of PureNexus.
When booting into TWRP to perform a backup, there seem to be duplicate partitions (specifically System and Vendor), whereas before this was not the case. Although if I go to the Wipe option within TWRP, there are no duplicate partitions listed. Is this an issue within TWRP or by design? or have I jacked something up?
[x] = Selected by default
[x]Boot
[x]System
System Image
Vendor
Vendor Image
[x]Data (excl. storage)
Cache
Recovery
EFS
Click to expand...
Click to collapse
That's normal Bro. I think you misworded what you said. They aren't duplicates as one is the system and one is the image for the system and same for the vendor. I can't remember why that shows but maybe it is because f2fs works different than ext4 with partitions.
Thank you. Sorta kinda slightly almost assumed that was the cause, as I understand the system partition has a fallback (sure that's the technical term for it) So maybe it's the newer TWRP being more capable of showing these - as I do not remember seeing them on prior versions.
jacksheadache said:
So I just updated TWRP (3.1.0-7 ), converted to F2FS, and flashed the latest build of PureNexus.
When booting into TWRP to perform a backup, there seem to be duplicate partitions (specifically System and Vendor), whereas before this was not the case. Although if I go to the Wipe option within TWRP, there are no duplicate partitions listed. Is this an issue within TWRP or by design? or have I jacked something up?
[x] = Selected by default
[x]Boot
[x]System
System Image
Vendor
Vendor Image
[x]Data (excl. storage)
Cache
Recovery
EFS
Click to expand...
Click to collapse
Those have always been in TWRP for both 2015 Nexus devices.
Sent from my Nexus 5X using Tapatalk
SlimSnoopOS said:
Those have always been in TWRP for both 2015 Nexus devices.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
You're wrong. Or I'm seeing things. More likely I'm seeing things.
Thank you
jacksheadache said:
You're wrong. Or I'm seeing things. More likely I'm seeing things.
Thank you
Click to expand...
Click to collapse
You are seeing things. The images have been there for years.
jacksheadache said:
You're wrong. Or I'm seeing things. More likely I'm seeing things.
Thank you
Click to expand...
Click to collapse
Hello, i think those are here since Nexus 6P release. Anyway, if you want a "proper" explanation of the difference between system/system image, here it is:
https://twrp.me/faq/whattobackup.html
Cheers...