Unable to Mount System - OnePlus 5 Questions & Answers

i'm on latest open beta 7(8.1) on my oneplus 5. i just unlocked the bootloader and flashed the bluespark twrp then i tried to change the system partition file system as f2fs. it showing done but on next line it showing an error as failed to mount '/system'(no such device). i tried official twrp also and facing the same error. it changed to f2fs but after booting it was again changed to ext4(checked with diskinfo)
then i can't able to mount the system also
Please help to solve this error and to change the file system as f2fs.
i can't able to boot into system on ob7 with twrp. but can be booted with stock recovery. please help me thanks in advance.

Ragavendran 007 said:
i'm on latest open beta 7(8.1) on my oneplus 5. i just unlocked the bootloader and flashed the bluespark twrp then i tried to change the system partition file system as f2fs. it showing done but on next line it showing an error as failed to mount '/system'(no such device). i tried official twrp also and facing the same error. it changed to f2fs but after booting it was again changed to ext4(checked with diskinfo)
then i can't able to mount the system also
Please help to solve this error and to change the file system as f2fs.
i can't able to boot into system on ob7 with twrp. but can be booted with stock recovery. please help me thanks in advance.
Click to expand...
Click to collapse
You have to format data and then change system partition to ext4 and now you can flash the rom again.

Aarju said:
You have to format data and then change system partition to ext4 and now you can flash the rom again.
Click to expand...
Click to collapse
I formatted the data . Then only I tried to change the file system as f2fs. .. I want to change the filesystem as f2fs

Ragavendran 007 said:
I formatted the data . Then only I tried to change the file system as f2fs. .. I want to change the filesystem as f2fs
Click to expand...
Click to collapse
Ext4 is better than f2fs and also you have to first format again and then clean flash is required.

Aarju said:
Ext4 is better than f2fs and also you have to first format again and then clean flash is required.
Click to expand...
Click to collapse
F2fs has better writing speed. Then I may help to install the apps faster.. right?

https://medium.com/thecyberfibre/f2fs-versus-ext4-our-take-on-the-ongoing-battle-c0324f46d040

Ragavendran 007 said:
F2fs has better writing speed. Then I may help to install the apps faster.. right?
Click to expand...
Click to collapse
While faster, you may find yourself with compatibility issues in regard to your preferred ROM, etc.
Sticking with ext4 (for now) is simply the better option at the moment because it ensures that your reliability and compatibility. Also, there are apparently some issues with f2fs when it comes to device encryption.
Therefore: just wait. Maybe in the future f2fs will be the better option. As for now: I don't think that with an OP5 you need to worry about the installation time of apps taking too long.

Related

Purity rom f2fs

I was considering attempting to use the f2fs filesystem that is discussed in original android development but I'm a bit confused with what to do to load a new rom. Can anyone explain if it will work with the purity rom and what I need to do to get it working? Or also let me know if its not possible.
Yes, I have used Purity with F2FS, but this filesystem is unstable because the system hangs usually (I have also tried with SlimKat and RastaKat with same hangs copying many files).
Basically:
- You must flash "twrp-unofficial-2.7.1.0-f2fs.img" as a normal recovery and change /data, /cache and /system (optional) to F2FS.
You will find this option under Wipe -> Advanced Wipe, then select only one partition and press the "Repair or Change File System" button for change to F2FS. Use Wipe -> Format Data also (you will lost data in /sdcard).
- Install Purity ROM (if /system is converted to F2FS, you must use "convert2F2FS.jar" for modify ROM zip and must install this new ROM).
- If /system is F2FS, install "KTManta_F2FS-26-06-2014-ALLF2FS.zip" Kernel or "KTManta_F2FS-26-06-2014_CACHE_DATA_PARTITIONS.zip" else.
patzzz said:
Yes, I have used Purity with F2FS, but this filesystem is unstable because the system hangs usually (I have also tried with SlimKat and RastaKat with same hangs copying many files).
Basically:
- You must flash "twrp-unofficial-2.7.1.0-f2fs.img" as a normal recovery and change /data, /cache and /system (optional) to F2FS.
You will find this option under Wipe -> Advanced Wipe, then select only one partition and press the "Repair or Change File System" button for change to F2FS. Use Wipe -> Format Data also (you will lost data in /sdcard).
- Install Purity ROM (if /system is converted to F2FS, you must use "convert2F2FS.jar" for modify ROM zip and must install this new ROM).
- If /system is F2FS, install "KTManta_F2FS-26-06-2014-ALLF2FS.zip" Kernel or "KTManta_F2FS-26-06-2014_CACHE_DATA_PARTITIONS.zip" else.
Click to expand...
Click to collapse
Where do you get convert2F2FS.jar?
Using f2fs with omnirom. All partition were formatted with f2fs. Having no issue with last update. You will find all resources in my thread

[Q] [OPINIONS PLS] My Nexus 4 running KK PA 4.6, Full F2FS. Please suggest better rom

Hi all, not so sure if this is repeated question.
I am looking for a faster rom for my phone, wants it to be fast and saves battery. Could you guys provide suggestions?
My Nexus 4 is currently on:-
Rom: Paranoid Android 4.6-Beta6 (Unofficial release, found under development threads)
Kernel: 3.4.104-franco-Kernel-SaberMod-r213.2
File system: Full-F2FS (System, cache, data are in F2FS file system)
Thanks in advanced. ^^
Chroma+Quanta kernel, you can convert /data and /cache to f2fs if you want
voron00 said:
Chroma+Quanta kernel, you can convert /data and /cache to f2fs if you want
Click to expand...
Click to collapse
Will there be performance sacrifice as system partition not F2FS?
I would PM you later on how should I carry out the process. The last time I flashed, I got message prompting me to type a message to access locked storage, but it's actually due to it couldn't access as kernel doesn't support F2FS. Probably I didn't flash F2FS kernel after flashing rom.
ordinarystar said:
Will there be performance sacrifice as system partition not F2FS?
I would PM you later on how should I carry out the process. The last time I flashed, I got message prompting me to type a message to access locked storage, but it's actually due to it couldn't access as kernel doesn't support F2FS. Probably I didn't flash F2FS kernel after flashing rom.
Click to expand...
Click to collapse
There is no big improvement of using F2FS at all. And since /system is read only this is totally not need
And yes, you got storage locked because of kernel without F2FS support.

[G950F] No /data partition in TWRP after flashing oreo update

Hi,
ive just followed the flashable oreo TWRP thread in here to test out Oreo.
My device is S8 G950F
link -> https://forum.xda-developers.com/ga...1-10-flashable-oreo-twrp-dump-beta-2-t3703083
After that TWRP didnt recognized my data partition anymore...:crying::crying:
So i installed latest TWRP in Odin again (had 3.1.1 before 3.2.0.0 after) - didnt helped.
Ive done a full restore with odin after i downloaded the firmware via samfirm, this is the exact firmware number ive used:
G950FOXM1AQJ5_CL12401979_QB15459675_REV00_user_low_ship
Still no success
I also tried flashing supersu (2.82) and dm-verifity (v.6.0).
Any ideas?
Is it just the partition table in twrp that needs to be updated or some stupid thing i forgot?
Regards
create one !!
popmpopm said:
create one !!
Click to expand...
Click to collapse
when you use wipe
choose data and use repair or change file system option
after resize file system and voila !!
popmpopm said:
when you use wipe
choose data and use repair or change file system option
after resize file system and voila !!
Click to expand...
Click to collapse
Yup already figured it out 5 mins after I created this. Shame over me
please help.
i have the same problem.
ive installed clean google edition orea (i had google edition nought 7 before).
everything works except /data/ mount in twrp.
the solution above didnt work, gave me errors.
do i need to format data?!
it will format all my current /data/ or also the internal storage?
thank you.
eliazu said:
please help.
i have the same problem.
ive installed clean google edition orea (i had google edition nought 7 before).
everything works except /data/ mount in twrp.
the solution above didnt work, gave me errors.
do i need to format data?!
it will format all my current /data/ or also the internal storage?
thank you.
Click to expand...
Click to collapse
Ok yeah it'll format whole internal storage.
You need to change the partition type of /data to f2fs and then change it back to ext4. Then two recognize /data again
Thargorsson said:
Ok yeah it'll format whole internal storage.
You need to change the partition type of /data to f2fs and then change it back to ext4. Then two recognize /data again
Click to expand...
Click to collapse
How do i format if twrp can't access /data?
eliazu said:
How do i format if twrp can't access /data?
Click to expand...
Click to collapse
It's not format.
Go to wipe, advanced wipe, repair or change partitions ,select data, select change partition type, select f2fs slide to continue.
Then do the same with data and change back to ext4.
eliazu said:
How do i format if twrp can't access /data?
Click to expand...
Click to collapse
its not magic you have all option in twrp wipe
I have done this and it works but as soon as i reboot and go back to twrp it doesnt recongize /data am i doing something wrong
after so many tests I discovered that twrp can read and write data only if you flash last supersu beta, magisk and supersu official both doesn't work:
https://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
Does the resize option or file system option wipe internal storage?

no F2FS support on /data for Oxygen OS 5 (Oreo)?

Previously on Oxygen OS 4.5.15 running your /data partition on F2FS had no problems.
However currently if you try running your /data partition with F2FS either you get an infinite boot loop or if you're decrypted you get an error message that says "Encryption unsuccessful" I'm assuming that's just the kernel being unable to mount the /data partition and just assuming it was a bad encryption or corrupted partition message.
Default partition layout for /data seems to be EXT4 and that works correctly just posting a new topic here to see if anyone else knows the status of F2FS was it removed form OxygenOS 5 kernel?
vortex-5 said:
Previously on Oxygen OS 4.5.15 running your /data partition on F2FS had no problems.
However currently if you try running your /data partition with F2FS either you get an infinite boot loop or if you're decrypted you get an error message that says "Encryption unsuccessful" I'm assuming that's just the kernel being unable to mount the /data partition and just assuming it was a bad encryption or corrupted partition message.
Default partition layout for /data seems to be EXT4 and that works correctly just posting a new topic here to see if anyone else knows the status of F2FS was it removed form OxygenOS 5 kernel?
Click to expand...
Click to collapse
By default, OxygenOS (OOS) comes with File Based Encryption (FBE) enabled. FBE, at present, is not compatible with F2FS and hence OnePlus has the /data partition defaulting to EXT4.
If you wish to use F2FS on /data, you'd need to be decrypted, a. and b. you'd need a kernel that supports booting with F2FS as well. Also, I'm not sure but I think the latest TWRPs for OP5 also don't have the necessary stuff to convert the filesystem to F2FS, but I haven't checked that myself, so can't say that with certainty.

F2FS rom

Any one know how to convert ext4 to F2FS on max pro m1 devices?
I believe you need a modified twrp for that.
In TWRP -
Wipe
Advanced Wipe
Select ONE of the partitions that supports changing filesystem (data/system/cache)
Tap on Change File System -> Select F2FS -> Swipe to wipe
Word of caution - Honestly, I haven't tried it on X00TD but did try it on Athene (Moto G4 Plus). /system is automatically changed back to ext4 on flashing a ROM and not all ROMs boot with /data or cache as F2FS.
baunthiyal said:
In TWRP -
Wipe
Advanced Wipe
Select ONE of the partitions that supports changing filesystem (data/system/cache)
Tap on Change File System -> Select F2FS -> Swipe to wipe
Word of caution - Honestly, I haven't tried it on X00TD but did try it on Athene (Moto G4 Plus). /system is automatically changed back to ext4 on flashing a ROM and not all ROMs boot with /data or cache as F2FS.
Click to expand...
Click to collapse
I have tried change file system but i had a bootloop
Vutuanhung said:
I have tried change file system but i had a bootloop
Click to expand...
Click to collapse
The ROM has to support F2FS too. That is what I said initially. I'm not aware of any ROMs on X00TD supporting F2FS.

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