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Questions tagged [partitions]

A partition is a division of either your internal storage or your sdcard.

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Does flashing the stock ROM repartition the device internal memory?

After I have repartitioned my tablet I wonder what would happen if I flashed the stock ROM again.
Omar Mohamed Khallaf's user avatar
1 vote
1 answer
867 views

Android Device Partition table not recognized by any of the partition management tools

I have an Android 8.0.0 device (https://www.tvbox-manufacturer.com/product_category/fire-tv-stick/) with eMMC as a storage medium. The eMMC is removable (BGA socket on the Board). The device boots ...
nishad kamdar's user avatar
4 votes
2 answers
8k views

How to create and use multiple partitions on external SD card with different filesystems (Ext4, exFAT, NTFS)?

I want to create 4 partitions on external MicroSDcard through ADB shell commands, not on Windows or Linux. Also want to show all partitions in Android GUI (SETTINGS > STORAGE > SDCARD) and make them ...
Androidquery's user avatar
3 votes
1 answer
481 views

How to move 7GB ext4 partition on external SD card to 30GB partition on another SD card?

I had rooted my Android Lollipop 5.1.1 phone and installed Link2SD and linked installed apps on ext4 7GB 2nd partition of external SD card of 16GB size . The apps installed occupied 6.5GB space and I ...
Androidquery's user avatar
2 votes
1 answer
1k views

How to erase unsued space so that dumping userdata partition creates a sparse file of small size?

When I create a gzip image of userdata partition (/dev/block/mmcblk0p29) it creates huge 6.8GB image, previously it was 350MB. Is it possible through command-line to erase or wipe or delete space on ...
Androidquery's user avatar
0 votes
1 answer
906 views

Looking for help choosing the correct stock recovery.img file for my phone

I have a Moto G5 XT1676 with Android 7.0 stock firmware. I rooted the phone with Magisk and installed TWRP but I never backed up my recovery.img partition. Now I want to flash a stock recovery ...
FlexMcMurphy's user avatar
0 votes
0 answers
118 views

Applications don't recognise internal storage partition 2 mounted as external sd card

So I have a Chuwi Hi10 Plus running RemixOS 2.0 (Android 5.1.1). This was originally a dual boot tablet, but I deleted Windows, so now the device has 45 gigs of storage free on the drive. I formatted ...
Tamas Koos's user avatar
6 votes
1 answer
4k views

Where is the baseband firmware stored and how does Android interact with it?

My searches on the web didn't provide suitable answers to these questions: 1) Where is the baseband firmware stored? My understanding is that this particular firmware is a RTOS built for the ...
Rand0mMan's user avatar
  • 375
0 votes
1 answer
1k views

how to extend support for EXT4 file system for microSD cards in stock or non lineage / CyanogenMod ROMS

As I am aware after Android 4.4 or some sort your storage card is no longer eXposed directly and needs to be carefully interfaced through specific Mount points that need to be aware through vold ...
user1874594's user avatar
14 votes
1 answer
3k views

Why are superuser permissions needed to acess /data partition?

The default account is normal user, and I used it to install Google Play Store APK (to /data). Then Google Play Store was opened using my current user's permissions, and it is used to download and ...
Livy's user avatar
  • 253
1 vote
0 answers
260 views

Where is info from /proc/dumchar_info used, on MediaTek devices?

There are plenty of instructions for changing partition layout on Android, including MediaTek devices, and they say I need to edit MBR, EBR and a ‘scatter file’ and to feed the latter to SP Flash or ...
aaa's user avatar
  • 143
2 votes
1 answer
240 views

Why bowsers cannot download files to storage (path looks /dev/null/Download)?

The phone is Samsung Galaxy Note N7000. For the last few years I use NightOwl custom rom (Android 7). I do not remember when I faced with this problem, maybe after repartitioning with REPIT (but ...
Vitaly Zdanevich's user avatar
1 vote
0 answers
4k views

How to get rid of SeLinux Denials in Permissive mode?

Need some help with 3 issues: In Permissive mode I get denials, why does this happen and how do I fix that? If I am enforced, how do I give access to my Partitions to various processes. Right now I ...
user1874594's user avatar
0 votes
1 answer
84 views

After formatting SD card "as internal", can the partitions be downsized?

I've a 16 GB MicroSD card that's apparently faking its size. Using H2testw I found that only the first 7.8 GB are usable. Before buying a new one, I want to see if I can "fix" it. The idea is to have ...
Dominykas Mostauskis's user avatar
1 vote
1 answer
1k views

How is system-as-root mounted in Android 9?

In Android 9, system.img consist of system and ramdisk. So kernel will mount system.img directly and implement init program. Next, init will parse init.rc file and mount remaining partitions based on ...
hugtech's user avatar
  • 123
-1 votes
1 answer
174 views

How does Windows interact with Android Internal Storage?

I have a simple question which I can't find the answer for We all know that Microsoft Windows doesn't support partition formats such as ext4 or f2fs, however even this being the case, how can it ...
Neffarion's user avatar
0 votes
1 answer
398 views

How to merge /data and /sdcard on Android 4.4?

Is it possible to use two partitions as one storage on a MediaTek device? AFAIK, it is already implemented in Samsung Galaxy S III, may be.
miduja's user avatar
  • 43
2 votes
0 answers
1k views

EXT4 Mount gives this error "SELinux: mount invalid. Same superblock, different security settings"

I am trying to mount a second partition (ext4 ) for my apps ( I guess its a bit outdated with adoptable storage but then ext4 isn't accepted FS for adoption for external card ) . I am on 9.0 ( Pie ) ...
user1874594's user avatar
0 votes
0 answers
2k views

app2sd link2sd nightmare ..all Fully Linked apps disppear

One advantage in using app2sd ( or link2sd ) was that if all your apps are totally linked when you swap out phones you would hope to 'carry' your apps with you and of course space savings to /Data ...
user1874594's user avatar
0 votes
0 answers
798 views

mounting multiple ext4 partitions in Android 7+

I am doing away with exFat for my Microsd card after all my pictures decayed , corrupted and the directory was locked. I cant seem to write into a specific directory. chkdsk will just plain abort ...
user1874594's user avatar
1 vote
1 answer
22k views

E:failed to mount /cache (invalid argument) - how to format?

I have a Asus Zenfone 2 and a few days ago it ran out of battery and turned off. Then after I charged it up and restarted it, it wouldn't turn on. It gets to the logo and the loading circle and just ...
Curiosity's user avatar
  • 111
1 vote
1 answer
3k views

How to change random filesystem label on USB OTG?

I am without PC right now, but I need to Format USB Drive (to FAT32 or Ext4) with Samsung S8 (Android 9) and change label. But I can't find any app that can do this. I can format USB drive in Storage ...
Martin K.'s user avatar
3 votes
0 answers
861 views

hard factory reset when partitions are messed up

I have a Google Nexus 7 (2012) which for no apparent reason entered an endless reboot loop. Trying to fix it with a fresh install of the OS via TWRP, I unintentionally messed up the partition table. ...
Antonio's user avatar
  • 131
0 votes
1 answer
155 views

Inserting incompatible SD card?

I have an Android phone which supports 32GB SD card. So, if I insert a 64GB SD card, I know that the device will not recognize it. But, if I create two partitions in the 64GB SD card (32GB each), will ...
Puspam's user avatar
  • 622
2 votes
0 answers
175 views

Micro sd card partition strategy for Android (context of wear leveling & data corruption)?

The primary issue relates to bad blocks / clusters and it happens to be android platform. This is a Sandisk 128gb (leave this link - it is not an ad). Some cards indicates other problems like memory ...
user1874594's user avatar
1 vote
0 answers
392 views

SD card had bad sectors after chkdsk. Is that Logical or physical ?and path from here

This is about data corruption on android . The primary issue relates to bad blocks / clusters and it happens to be android platform. So this is a super user and NOT android enthusiast question. ...
user1874594's user avatar
2 votes
2 answers
3k views

What's the difference in contents of `/odm` and `/vendor` directories?

I have a little idea about the /odm but no idea of /vendor dir. Can someone please explain in the best way possible? I looked up on Google and it didn't help. What I'm really confused is with whether ...
ghost_83's user avatar
1 vote
0 answers
712 views

Adoptable Storage on LG Stylo2

I recently bought a 64GB SD card. Soon discovered adoptable storage is disabled on Stylo2, so I can't change app storage from Internal storage to SD card. I followed instructions on another forum of ...
blakburner's user avatar
7 votes
1 answer
10k views

What special privileges "/system/xbin/su" does have w.r.t. root access?

This answer says: Because of the way directory/file permissions are configured on Android, you need to have the su binary on your /system partition in order for it to work. Putting elsewhere ...
Oren Milman's user avatar
2 votes
3 answers
6k views

Manually create A/B partitions

I have a Xiaomi Mi 6X which is the Chinese version of A2. There is a way to convert it into A2, but OTA updates won't work because 6X has only A partition. I'm not sure, but I've read, it is possible ...
Aray Karjauv's user avatar
1 vote
0 answers
7k views

Reset Partition Table for Nexus 7 2013 (Flo)

To cut a long story short I wanted to make the system partition larger on my tablet PC as it's far too small to do anything practical on. I used ADB push to put Parted into the root directory and ...
willowen100's user avatar
3 votes
1 answer
2k views

How many mmcblk devices is normal?

Why so many mmcblk devices? /dev/block/mmcblk0 /dev/block/mmcblk0boot0 /dev/block/mmcblk0boot1 /dev/block/mmcblk0p1 /dev/block/mmcblk0p10 /dev/block/mmcblk0p11 /dev/block/mmcblk0p12 /dev/block/...
Evan Carroll's user avatar
  • 4,407
1 vote
2 answers
4k views

Accidentally flashed TWRP on both A/B partitions on Xiaomi Mi A2 Lite

I decided to try to root my Xiaomi Mi A2 Lite. I accidentally flashed twrp-3.2.3-0-daisy.img on both A and B partitions. Because of that, now I can only access the TWRP menu. I think I should download ...
Sapu's user avatar
  • 11
4 votes
2 answers
14k views

How to take full image backup of partitions or eMMC?

I have an Archos 55 Platinum here. There is also a unofficial TWRP, if this might help. I would like to make a backup of the storage of the phone, like dd for any partition, so I can inspect the ...
davidbaumann's user avatar
1 vote
0 answers
98 views

Linux automount corrupts ext4 partitions of Android install?

I've been experimenting with dual-boot between Linux and Android on an x86 device which came with Android + Windows preinstalled (Chuwi Hi10 Pro). I soon found out that simply booting Ubuntu (either ...
Florian Echtler's user avatar
1 vote
0 answers
1k views

Partition SD card for use on a dual boot tablet

I have a dual boot Windows 10/Android tablet device that has only 1 micro SDcard slot. I also have a 128GB microSD card that I would like to split into a 96GB partition 1 for windows and 32GB ...
Lemuel's user avatar
  • 11
1 vote
0 answers
327 views

What is the partition layout of the Google Pixel?

I have searched for a listing of the partitions on the first Google Pixel. What are they?
Melab's user avatar
  • 835
3 votes
2 answers
804 views

Where does the partition information in /proc/dumchar_info come from, on MTK devices?

If I want to resize partitions or restore a backup later, how do I make sure that /proc/dumchar_info reflects the changes? As far as I can tell, dumchar_info is not related to the MBR and EBRs, since ...
aaa's user avatar
  • 143
0 votes
1 answer
2k views

How disk space is partitioned in an Android phone?

How does storage space in our phone is partitioned? How can we access our storage space?
Nguyễn Tiến Dương's user avatar
0 votes
1 answer
3k views

stuck at "updating partition details" while installing magisk

so I have a moto 4 plus running android 7 that I am having trouble with running twrp. I am following a guide to root it by unlocking the bootloader, flashing twrp (temporarily) and then flash Magisk-...
harvoni's user avatar
0 votes
1 answer
826 views

What are physical partitions on Android device?

I'm new to Android system. I'm trying to understand how it is installed to internal memory to eventually have it fully backed up and capable to be restored. To accomplish it I need to know what to ...
kagetoki's user avatar
5 votes
1 answer
6k views

Why do partitions get unmounted automatically after some time?

I have an Android phone running Oreo 8.1.0. I have two partitions in sdcard. One partition is ext4 formatted. I mount it using: mount -t ext4 -o rw /dev/block/mmcblk1p2 /data/sdext2 But after some ...
jonny789's user avatar
  • 385
0 votes
2 answers
102 views

Unable to mount /data after multiple wiped

Everytime I try to flash anything from TWRP it says "E: unable to mount /data". I have tried multiple wipes and entirely reflashing the os but everytime i finish setting up the phone after wiping it, ...
Kio's user avatar
  • 101
1 vote
0 answers
79 views

Saving backup to separate partiion - will wipe data/factory reset delete this partition?

Rooted PIxel 2 XL. Running Titanium for backups. Considering saving (encrypted) back to separate partition. If I am in recovery mode and do Data Wipe/Factory Reset, will this separate, "backup" ...
user245511's user avatar
0 votes
1 answer
730 views

How to mount userdata_b in stot_a in A/B partition device?

I have a Tissot (mi a1) with TWRP dual booted by separating vendor_a, vendor_b, userdata_a, userdata_b. It is dual booted by cosmicdan's twrp with Resurrection remix ( slot_a) official and Dotos ...
Sudipta Sarkar's user avatar
1 vote
1 answer
2k views

How to repartition Google Nexus 4 (aka. LG E960)?

Over a month ago, LineageOS rolled out Oreo (I think) update for the Nexus 4 (mako), but there's a catch - the system now takes up so much space, that even the nano version of open-gapps package can ...
myxal's user avatar
  • 11
1 vote
1 answer
3k views

Does an Android Factory Reset also clear the cache partition? [duplicate]

In researching a possible answer to this question about "Server error occurred. Restart Camera." while taking photos on the Samsung Galaxy S6, I read this article. The article talks about wiping the ...
Amazon Dies In Darkness's user avatar
0 votes
0 answers
307 views

Samsung Galaxy J7 Pro 2017 (SM-J730GM) doesn't seem to support partitioned SD cards

I have a Samsung Galaxy J7 Pro SM-J730GM purchased at a Sanborns shop in Mexico, running Telcel's stock ROM, rooted, with TWRP recovery and Link2SD. A couple weeks ago I repartitioned my SD card in ...
RAKK's user avatar
  • 111
0 votes
0 answers
619 views

Understanding partition size on /proc/partitions

I am trying to build a LineageOS ROM for an unsupported device. I need to get the partition size of the device. I have a rooted device and then went to /proc/partitions via root explorer, and I have ...
Rahul Sharma's user avatar
2 votes
1 answer
20k views

TWRP: Failed to mount '/preload' (Invalid argument)

With TWRP, on almost every operation I get Failed to mount '/preload' (Invalid argument) My device currently can not boot, and this may have something to do with it, /preload is currently in /etc/...
Evan Carroll's user avatar
  • 4,407

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