Questions tagged [boot]

Use this tag for issues with the "boot-process" of your Android device.

287 questions with no upvoted or accepted answers
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Can I root android by booting from an sdcard?

Digging for that, I found various resources on the net to boot Android from sdcards. Doing that would make possible many things what are generally unavailable in phones. For example, it would be ...
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1answer
99 views

Samsung J5 stuck in boot loop after factory reset

Phone was rooted and working fine I did a factory reset Now, it seems to just boot into the Samsung animating logo that does not go away... I'm able to boot into the recovery mode and view the logs. ...
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Android boot.img installing BusyBox with Dropbear

I have installed TWRP on my device, extracted boot.img. Initially I just wanted to build Dropbear for Android and make it run from boot.img. I don't need any app to have root access. What I would ...
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Is there any way to recover from an over-written android system recovery, or what else might cause a Pixel XL not to enter fastboot from recovery?

This is an attempt to sideload an update to a Google Pixel XL stuck in a boot loop. Following this answer from the official Google forums, I tried this procedure as linked in the chosen answer. ...
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732 views

Is it possible to boot a Android smartphone without battery with charging wire on?

Problem The title of this post seems a funny challenge. But frankly, there are a lot of worthy points involved in this question. If a Android phone support rapid charging. If its battery is removed, ...
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250 views

Android Pie Remove Startup Sound

I want to remove startup sound from a samsung A10 and samsung A40 (both with android PIE on it). I could find an option to do that on other Android Version (Nougat for instance), but not on PIE. On ...
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1k views

Unable to Unpack android 10 boot.img properly

Devices : sanders & rolex Unpacking/Repacking boot.img was fine upto android 9 on most roms. But, Unable to Unpack "boot.img" of android 10 roms, tried boot.img from Android 10 based Havoc, ...
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58 views

Are there (developer) tools to remove files from Android “Rom” cache, if the smartphone doesn't start properly?

(I have also asked on stackoverflow, as I assume the use of developer tools is neccessary, but I would be very glad to get any working help on here also. The Google Photo App filled up the 16 GByte "...
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152 views

Set a password at boot before recovery mode on Android Q Huawei P30 Pro

on my old cellphone, I could set a password that was asked at startup to protect it I did not find any similar setting in Android 10 I need help to properly secure my cell phone in case I lose it
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31 views

What does Kindle Fire Optimizing Storage and applications actually mean?

Every time I boot my Kindle fire 10 7th gen, it does this. Sometimes displaying "Optimizing Storage and applications" with progress bar for up to 10 minutes. The flippin thing runs out of battery ...
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543 views

How to create without sparse flashable.img through adb shell?

Created an image of /system/ by the command dd bs=4k conv=sync,noerror if=/dev/block/mmcblk0p21 of=/sdcard/system.img it created a 2.2 GB file when i flashed it by command fastboot -S 500M ...
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24 views

What happens in low level when booting a Android Q (10) device?

I have read this article which introduce Linux booting process. However, even if Android system also use Linux as kernel, the surrounding software is greatly different. So I have searched this post ...
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88 views

Tried rooting Galaxy J7 prime, won't boot. Help

So, I was trying to root my Samsung Galaxy J7 Prime. This was the first time I tried rooting anything. I ticked OEM, downloaded Odin and TWRP following the guide on https://odindownload.com/root-...
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33 views

I want to play video on android box startup

I want to play a video stream eg rtmp or hls on boot through MX player or any other. how can it be done?
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46 views

Android Lollipop Boot Issue

ASUS Zenfone 5 A501CG ; Switched Off, Power button and Volume buttons are broken. When I connect charger It shows USB Sign and goes off as shown in Video Link. Please Watch It. I have Important ...
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37 views

How to switch on Samsung Galaxy when Power Button jams?

Since my smartphone's casing is so tight, I had to press the buttons harder, until the power button got permanently stuck. Now I dont't know how to switch on my Samsung Galaxy without using its power ...
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387 views

How to enter recovery mode with an OTG keyboard?

I would like to know how to boot my Mediatek tablet into recovery mode by using a physical keyboard (OTG) because my volume key doesn't work. And I can't boot to the OS to enable the USB debugging.
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88 views

Encryption failed after turning my android phone on

when i turn on my phone it shows "Encryption failed" and "Unable to start up your device. the encryption process was interrupted. you need to reset your device to factory default setting. this will ...
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442 views

Unpacking and repacking boot.img changes it's file size

So I unpacked boot.img file using unpackbootimg in ubuntu. Then without changing the file I repacked it. But the filesize became smaller. From 36.7 MB to 17 MB. I tried to flash that image to my phone....
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33 views

How to exit out from a stuck safe mode?

My Samsung Galaxy A3's power off button didn't work, so I held the Power off and Home key for 5 seconds which brought me to a custom OS warning. It showed that I could cancel and restart if I pressed ...
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33 views

Is there anything like live CD for android phones?

We can go into recovery mode in android phones, which is usually home+volume up+power for samsung phones This answer says that the recovery mode is like a simple OS that the device boots into. This ...
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87 views

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
23 views

itel phone unable to switch on

I bought a new itel phone yesterday. I charged it a bit then added apps and photos and music. I played some music during the night. I tried rebooting does not go on, it vibrates but screen is blank.
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1answer
130 views

Apps suddenly stopped starting automatically when my phone boots

I have two apps that I expect to start when I boot my phone: AccuBattery and Weatherbug. A few months ago though, Weatherbug stopped starting automatically, and AccuBattery stopped a couple days ago. ...
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2answers
2k views

E: can't mount/cache/recovery/log on Android Lenovo a1000

I have a problem on starting my lenovo a1000 , so i decided to install firmware on it. I tried too much, but every time the phone fishing flashing , and 100% passed with spd factory flashing tool , ...
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My Samsung Galaxy S8 has crashed and will not go through the forced restart procedure

My Samsung Galaxy S8 has not suffered any water or impact damage. It just stopped working all on it's own. I have tried to go through the forced restart/reboot procedure - ie - holding down the power ...
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1answer
51 views

Power on when charging but only when battery level is greater than 20%

I have recently tried to fit a tablet into my car and I came across a problem with waking up the device without using the power button. My solution is to boot the device whenever it is charging, but ...
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1answer
157 views

Link between device state & user settable root of trust

I am (still) trying to understand exactly how verified boot works and I am wondering what happens when a user-settable root of trust is used by the device. As said here: If the device is LOCKED, ...
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1answer
47 views

Prevent homescreen/desktop from showing before my start-up app?

I have this bootup app that listens to the system boot up event and will launch on system start up (pardon the verbosity). Problem is, the system will stubbornly show the homescreen (or a static ...
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1answer
953 views

System crashed and not rebooting on Xiaomi Redmi 5 Plus

I have a Xiaomi Redmi 5 Plus with MIUI 8. My system crashed today and then the phone tried to reboot but is stuck eternally in the boot screen with the Mi and Android logo. I only had 100 MB free ...
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1answer
292 views

OnePlus 5 Black Screen after Pie

My OnePlus 5 after the Pie OTA update wont show the screen. after rebooting, it only shows the 'android' logo and then the screen goes completely blank(black). I can sense that the phone is turning on ...
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438 views

Can't unlock my phones bootloader

I'm using a local branded chinese phone. And my phones comes with locked bootloader. As it is a local branded phone, manufacture doesn't provide a official way to unlock it! I've tried many way I ...
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125 views

Google Nexus 7 (2013 Wi-Fi) Boot freeze, no recovery options working

I bought a Google Nexus 7 2013 edition, Wi-Fi only, from a yard sale. I have no clue what the previous owner did or tried but I cannot get it to boot. I'm not by any means an Android expert so if it ...
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40 views

My phone is stuck in a loop

My phone is a Samsung Galaxy Young GT S6312. It does not boot up at all. I have made a video of the loop as shown here - https://drive.google.com/file/d/1t38NYXvawmxSiIK9gqRTLINoIvG158Vi6w/view?usp=...
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1answer
312 views

Asus Zenfone 3 Zoom broken power/volume key - How to boot

I got big problem with my phone (ASUS Zenfone 3 Zoom) I broke the plug that connect the power/ volume cable so I am not able either turn on the phone or turn to safe mode. Also the USB debugging ...
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1answer
25 views

My Samsung tablel 1 is not restarting?

It stop working in process of restarting where android symbol is coming. So what should I have to do for resolve this issue?
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1answer
548 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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2k views

Android x86 won't boot with GRUB 2 - stuck at Detecting Android x86

I recently installed Android x86, using ~~99 GB free space on an old drive, partitioning it into /dev/sdb3. After reinstalling grub (accidentally selected "yes install grub" in the installation menu),...
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1answer
27 views

How to make a backup from internal storage of my Galaxy S3 Neo while it stucks on Samsung logo screen?

My Galaxy S3 Neo has stopped working without any clear reason! I woke up and looked at my phone screen. It was showing the logo of Samsung. Then I turned it off by removing the battery. Since then I ...
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1answer
206 views

Custom Boot animation slows, freezes and crashes phone

I've created a custom boot animation: Create animation with Blender, render all the frames 1080 x 1920, PNG. Convert them to JPG. Store frame 0 to 123 to folder part0, store frame 124 to folder part1....
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441 views

New pixel 2- turning on shows battery and then horizontal purple line

I just bought a new Pixel 2. I opened the box, turned it on, and it showed a white battery with the charge symbol, and then that disappeared, and 2 small colinear horizontal purple lines briefly flash ...
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1answer
134 views

Boot LG G3 hard drive from PC

My father's LG G3 has stopped working. after logo screen it just shuts down. Is there a way to boot the phone as only a hard drive from a PC ? He has important notes on the phone that he needs to ...
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3answers
282 views

Phone softbricked after updating TWRP

My Yu Yureka is stuck at boot logo after I updated to TWRP 3.2.0.0. It does not go into recovery or download mode. I tried connecting it to PC and that too isn't working. How do I flash a working ...
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1answer
2k views

Android TV autostart script

I want to run a script after booting from a Android TV box (Xiaomi Mi Box) I tried a lot but nothing works. Is there any option to 'activate' an init.d folder?
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1answer
350 views

How to fix infinite bootloop problem in rooted karbonn Sparkle V

I have Karbonn Sparkle V and it has marshmallow before I root it. when I root my phone using Android One toolkit, its restart my phone after showing message rooting completed. But when it restarts ...
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1answer
333 views

Casper Via V6X Bricked. Can't Boot Into Recovery Mode

I've an Android device, Casper Via V6X. The device is not booting. I get the vibration and see the logo of the device but then nothing happens. When the device is closed and plugged in, it shows that ...
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822 views

Enable startup pin/password security without lock screen pin/password?

It is my intention to disable the pin/password for the lock screen, while still having the startup pin/password security. As I understand it, the options are to set a pin/password for lock screen ...
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1answer
39 views

Popup at boot, warning about unspecified “problem”

A few days ago my device (oneplus one with cyanogen) started showing this popup at boot, is there a way to diagnose this unspecified "problem"?
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223 views

Samsung logo has gone and was replaced by “Welcome” message

Yesterday my phone's Samsung logo has gone and was replaced by "WELCOME" message each time I've booted my phone. I don't know why it happened. Also the Samsung shutdown logo was replaced by "BYEBYE" ...
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1answer
371 views

How can I stop my Nexus 5X getting stuck in the loading screen?

My phone is stuck on the dots loading screen and won't load. It is rooted and it is a Nexus 5X. (No it is not the bootlooping issue). I cannot boot into recovery because the phone will not fully turn ...