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Questions tagged [partitions]

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

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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
403 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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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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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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184 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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42 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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1answer
79 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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36 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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34 views

Why is there no need for a separate /cache partition with A/B schema?

Google eliminated /recovery and /cache with the introduction of A/B partitioning schema. It's easier to understand the removal of /recovery, as there's no need for a separate kernel to be running in ...
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31 views

How to move unallocated space when resizing data partition?

I have a Chuwi Hi8 Pro tablet and I don't use the Windows side. So I deleted the Windows partitions to get more space following this tutorial. But when I went to resize the Android data partition, it ...
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1answer
651 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
116 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
465 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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2answers
69 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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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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338 views

Is possible to change partition table structure with fastboot

I have an Honor 7x phone, model : bnd-l21c185b144 I did update this phone with this instruction set to OREO. ( I didn't know that model is not supported ) In update duration it got error and did ...
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1answer
178 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
229 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
220 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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133 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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1k 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
95 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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22 views

How to create a new block partition in android?

I'm having a Nexus 4 and I want to make a new block partition a "/cust" with 256MB and so I want to do some experiments on it.
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76 views

How to restore userdata image?

To save image to PC I used adb pull /dev/block/bootdevice/by-name/userdata userdata How to restore that image? "fastboot flash userdata userdata" doesn't help.
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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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45 views

Desire X partition table

I want to tweak my partitions, so to have more space for apps. In particular, the idea is reducing the internal user storage, while enlarging /data. As I tried to use parted, I got the classical error:...
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62 views

userdata write and readback

I am trying to backup and restore userdata partition, I use mediatek sp flash utility (which should work like "dd" as I assume) In the first try it works, but if I get back to factory image and then ...
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mismatch between kernel partition size and scatter txt from manufacture

I have strange mismatch issue in userdata partitions: with ds I get the following, which shows userdata size of 5.1G. shell@H5:/ $ df Filesystem Size Used Free Blksize /dev ...
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26 views

After (any) apk install is it the system image that was modified?

I have installed firmware from manufacture, and then installed some apk, and wanted to readback the affected partitions. I would like to ask: Which partitions are affected by apk install ( is it ...
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119 views

Adding a custom entry in the partition table

I was looking for a way to add a custom partition in my phone. I was thinking of re-sizing the userdata partition to accommodate for the new partition.
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1answer
405 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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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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160 views

What is the exact difference between the System partition and the Internal storage in TWRP Recovery?

And what happens if I wiped both System and Internal Storage as well?
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1answer
176 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
3k 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 ...
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1answer
73 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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329 views

Messed up my phone's persist partition

I'm using Mi 5. i used to have lineage os which basically messed up my phns partitions, currently I'm running on the stock os. Idk what's is the reason, but I guess I messed up with the partitions of ...
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646 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 ...
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2answers
748 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 ...
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1answer
3k 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
567 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
305 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>...
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1answer
662 views

Wiped System Partition… No OS.. How can I recover it back?

I successfully installed TWRP yesterday on my phone and then wanted to root it, but before doing that, I wanted to do a Full-Wipe of my phone, just leaving the phone with the OS, but for some reason, ...
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1answer
283 views

Link2SD | 1st partition not working / not showing / not detected

My problem is, that I can't see the 1st. partition in the storage informations. Hardware: Sony Android mobile phone (don't know exactly the model; is my girlfriends) Android 4.2.2 Samsung PRO Plus ...
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1answer
81 views

android: how to clear restrictive permissions on internalSD

background - symlinking gone wrong from internalsd to externalsd on android 7, that makes the CrypticFolderName inaccessible to the app that needs it. https://forum.xda-developers.com/android/apps-...
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1answer
787 views

Can't create a primary, not a logical partition in SD Card

1. Summary I can't set primary, not logical partition in my SD Card. After my attempts, I can't write anything to SD Card. 2. Hardware and software 2.1. Smartphone ARK Benefit S401, Android 5.1.1,...
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723 views

Format SD card 2nd Partition as F2FS

Apps2SD supports F2FS for a SD card's 2nd partition. How do I format the 2nd partition as F2FS from Microsoft Windows or via adb?
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How can I mount or open already dumped mmcblk0?

I have dumped a mmcblk0 by adb command. Busybox already installed on my android. adb shell su root busybox cat /dev/block/mmcblk0 > E:\1.bin Now I can not mount this file on windows 10 with ...
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1answer
759 views

Problem with coping mmcblk0 to pc

I want to clone internal memory of my android phone. Version 5.0 lolipop. I have found an tutorial website but this is not working. Web site link given below. http://www.fciotti.com/2017/02/26/clone-...
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Help unbricking my nexus 5

let me tell a story first, i want to flash new boot.img for my nexus 5, but i'm also curious what happen if i do re-partition. I delete boot partition ./parted /dev/block/mmcblk0 rm 19 (my boot is 19) ...