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Questions tagged [partitions]

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

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14 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 ...
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21 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 ...
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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 ...
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21 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 ...
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1answer
56 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.
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52 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I am trying to mount a second partition (ext4 ) for my apps ( I guess its a bit outdated with adoptable storage but then ext4 isn't accepted FS for adoption for external card ) .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 ) ...
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82 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 ...
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75 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 ...
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Reading phone partition and writing to SD Card

Guys i really need HELP Mine Docomo S7 from Japan aka SC-02H is bricked, so No Download - No Recovery - Not Turning ON I found another SC-02H working one from mine friend - I Read somewhere that i ...
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1answer
549 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 ...
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98 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. ...
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21 views

How come desktop Linux has /dev/mmcblk0 and Android /dev/block/mmcblk0?

Why is mmcblk0 at /dev/block/mmcblk0 in Android and /dev/mmcblk0 on desktop Linux distributions? Other block devices (listed using lsblkcommand) are also under /dev/. Why is it under /dev/block/ on ...
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46 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 ...
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73 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 ...
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120 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. ...
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45 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 ...
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113 views

Razer Phone 1 no such partition problems

I was currently having problems with my phone boot looping and tried to go into recovery or use twrp to stop it but they both failed. I read by using the flash_all dat that it will flash the factory ...
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92 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 ...
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1answer
995 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 ...
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1answer
398 views

Manually create A/B partitions

I have an 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 ...
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1answer
1k 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 ...
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1answer
590 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/...
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2answers
956 views

I messed up android partition with TWRP

first of all sorry if I make any mistake, I'm new here. Help. Today I decided to try to root my xiami mi a2 lite... I accidentally flashed twrp-3.2.3-0-daisy.img on both a and b partitions. Because ...
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54 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 ...
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417 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 ...
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114 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?
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2answers
269 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 ...
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1answer
91 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?
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1k 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-...
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1answer
327 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 ...
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1answer
1k views

Partition gets unmounted automatically in Android Oreo

I have 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 time,...
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79 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, ...
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53 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" ...
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1answer
395 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 ...
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1answer
615 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 ...
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1answer
519 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 ...
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211 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 ...
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3k 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/...
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1answer
133 views

Is my Android device booting into a “stealth” partition?

OK, this is a weird problem I’m encountering with an Android system I’ve been using without problems for several years now… and I’m practically out of ideas on how to potentially fix it. Let’s start ...
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49 views

Can a partition be larger than 4G byte?

Is there a limitation for a partition to be up to 4G byte? I have a strange case in which in cat /proc/partition the userdata is idenntified as 5.5G, while trying to backup and restore that partition ...
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1answer
627 views

How to resize the Android partition on an SD card for the Asus Tinker Board or other SBC

So, I have an Asus Tinker Board, and as of today, I have a stable running build of Android with Google Play that runs nicely, except for one thing. The img file I used does not expand out when writing ...
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97 views

Phone doesn't see SDCard after doing 2nd partition

In this topic I mentioned that I'm going to change a phone. And it happened. I bought new SDCard and inserted it into new phone. My new Samsung saw this card perfectly. Using MiniTool Partition Wizard ...
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1answer
314 views

What is “logo” partition on lenovo phone?

Don't remove this question please, it was previously removed from a programming board and I don't know where else to ask. What is a logo partition and what is the format of it? The header of the 8Mb ...
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3answers
7k views

How to run “parted” command in terminal emulator on my android smartphone

Updated question (2018/2/20) Thanks to grawity's answer and comment, my question can be updated. My final goal is to acquire detailed partitioning information (including the start and end address ...
2
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1answer
77 views

Is it possible to install a ROM on /recovery instead of /system?

I am not going to do it, but I just wonder whether it is possible to install a ROM to /recovery and TWRP to /system, so one would normally boot into TWRP and only boot into Android when one performs ...
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1answer
1k views

Canot enter TWRP recovery because of “fastboot erase userdata”

I want to flash a new ROM for my Android phone. I clean data by fastboot erase userdata but after that, I can not enter TWRP recovery because can not mount /data I tried fastboot format userdata ...
2
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3answers
1k views

Partition MicroSD card to exFat and Ext 4 for link2sd?

I've been poking around using GParted on my 128GB microSD card so it can use two partitions for link2sd. Problem is, no matter what I do, each time I place the card in my phone, it says that the card ...
2
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1answer
5k views

Wipe system partition

When installing a custom ROM shouldn't we wipe system partition along with data, dalvik, and cache? What are the differences with and without wipe?
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1answer
1k views

Is erasing the `misc` partition a solution to automatic/unnecessary boot into TWRP after having installed LineageOS 15?

I'm sure this question has been asked before, but I'm unable to find a good answer that I can understand, so bear with me: I've recently installed TWRP & LineageOS 15 on my Moto G5 (cedric), ...
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1answer
466 views

problems with SDCard after partitioning

I'm using a rooted XPeria Z1c. Recently I got myself a bigger SDCard (128 GB) and I decided to use 2 partitions. I started 'adb shell' then partitioned the card using sm partition disk:<disk_id>...