Questions tagged [boot]
Use this tag for issues with the "boot-process" of your Android device.
558
questions
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37 views
Recompile kernel: no errors but it doesn't work
I'm a beginner, and at the moment I'm trying just to repack original boot image. I've discovered that boot partition is on the "/dev/block/mmcblk0p7", so I pulled it with adb pull /dev/block/mmcblk0p7 ...
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votes
1answer
18 views
Android system cant start because of “No space left on device”?
I ran my app, which communicated with my server in every 5 minutes. 2 days later I can't turn on my tablet, because it stops at the boot image.
I'm getting all kinds of error in logcat like this.
My ...
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24 views
After pressing Android (Samsung Tab A SM-T580) power up button is it possible to boot to certain user?
I have since created a second account on my android tablet for my 9 year old niece which she will be using most of the time however if it has been powered off it initially boots back to my accout and ...
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10 views
z3 play not starting
I have a motorola z3 play used for about 12 months. It has worked fine and all of a sudden it crashed. It does not start on pressing power button. I am able to charge it and also take it to fastboot ...
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35 views
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 ...
0
votes
1answer
24 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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0answers
23 views
Unlocked boot loader ADB issue
So I’m trying to downgrade my nexus 6P from Oreo 8.1 to 7.xx. I’ve unlocked the boot loader and can communicate with the device through Google’s adb fast boot command line which works fine (up to a ...
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39 views
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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35 views
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. ...
1
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0answers
43 views
Unlock bootloader with PIN using ADB
My phone screen has shattered, and is not at all visible. I made the mistake of rebooting the phone via ADB, and now it is stuck at the boot lockscreen.
I am interested in copying the files off the ...
3
votes
1answer
57 views
How to see the boot progress messages (akin to dmesg) when booting LineageOS?
After the last OTA update my phone (OnePlus 3) seems to be stuck for about half an hour on the boot animation.
Since updates usually take ages to install, how do I know that the update process is ...
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63 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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0answers
23 views
Samsung Tab A6 won't leave battery screen or turn on
I'm currently having issues turn my A6 on, in that it simply won't start up.
I have tried: Holding the Power and Volume Down button, Holding the Power button for 30 secs, changing cables, changing ...
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0answers
12 views
Android device can't boot
I have this device Samsung A5 2016 which has not booted for a while, wanting to repair it, I went into recovery mode however no option seemed to work, recurring error which appeared: "can't find misc/"...
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55 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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0answers
127 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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0answers
14 views
What config file specifies which services load on startup? [duplicate]
I'm using ADB and have full access to the filesystem.
I run ps and see a process running called com.Something.Service. I can kill the process but it restarts most of the time.
It's not a visible app,...
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0answers
55 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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0answers
69 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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0answers
15 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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144 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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0answers
21 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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votes
1answer
98 views
I deleted the build.prop file but restore the old one but the phone wont boot
PLEASE HELP
I missed with the build.prop file but I made a copy of it before.Then I deleted the edited build.prop file and restore the old one then rebooted the phone(Samsung S3 lineage 14.1) but not ...
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37 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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22 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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vote
1answer
268 views
Can I flash Android on device with overwritten mmcblk0?
Can Android device with fully overwritten /dev/mmcblk0 (without /dev/mmcblk0p* partitions) be still flashed using fastboot? Is it true that overwriting /dev/mmcblk0 does not remove /dev/mmcblk0boot* ...
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0answers
36 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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0answers
29 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 ...
1
vote
1answer
5k views
Destroyed (boot/recovery).img after rebooting the device
I use Realme 3 pro device with SD710 running android 9.0 with ColorOs UI, and i'm trying to root my device with Magisk module. First i followed the instructions at link to unlock bootloader,then ...
0
votes
2answers
2k views
Is Multi-Boot Possible in Android?
Can you replace the bootloader of Android to create a UEFI-like environment where you can Multi-boot into another Operating System? I've seen several off-brand phones do this but I'm unsure how they ...
0
votes
1answer
300 views
Does Android Have a BIOS? [duplicate]
I'm unsure about this one but this is another one of the burning questions I have on the top of my head. Does Android have a BIOS? If not, how does it boot up? What is the software that actually boots ...
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18 views
Samsung Galaxy Core Prime stuck on boot screen
I am trying to boot this phone to retrieve pictures from it but it wont go past the boot screen. Is there any way to access the memory from my pc to pull them off. I have tried every way I can find to ...
0
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0answers
15 views
Boot priority for background apps
Android 7.1.1 on Galaxy Tab A. I am trying to use an app like "Force Rotation". It does start automatically, and runs as background activity. However, it takes a long time to start on a boot. ...
2
votes
1answer
1k views
Samsung A20 SM-A205W stuck on download mode
I have a Samsung Galaxy A20 and I was attempting to unlock the bootloader and also install TWRP. While the bootloader was unlocked successfully, while doing the TWRP part I had to use Odin and used an ...
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31 views
Add a custom script in init.rc in a Custom ROM
I am trying to add a script in a custom ROM on a Galaxy Note 4
I've done the unpack and repack process on boot.img by modifying the init.rc file.
But every time I try to reboot it stops at the home ...
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0answers
190 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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47 views
Can I give permanent volume increase permission to my phone?
I use Android 7.0.
My phone asks a permission about increasing volume level after every boot if I want to increase the volume level.
Is doing this mandatory after every boot or can I disable/by-pass ...
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0answers
51 views
LG G3 D855 with lineageos: hangs while booting, recovery partition damaged, no connection from adb
I accidently damaged the recovery partition on a LG G3 D855 with Lineage15.1
OS was still booting ok, but I wasn't able to get TWRP on recovery again, as the device was not routed. I used a one-click-...
0
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0answers
68 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 ...
0
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0answers
218 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....
1
vote
1answer
907 views
SELinux always set to permissive, how to set enforcing permanently?
I flash a custom ROM to my HTC B2UL.
The ROM, by default, has the SELinux policy set to Permissive instead of Enforcing.
I can use adb shell setenforce 1 to make SElinux enforcing. But after reboot, ...
2
votes
1answer
213 views
How to disable bad RAM addresses and fix bad storage blocks?
The symptoms which device presents are:
Restarts randomly with a previous freeze of a few of seconds (this is becouse of /proc/sys/kernel/panic is set to 5).
Sometimes with a blue filled screen.
Even ...
0
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0answers
30 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 ...
2
votes
1answer
83 views
ST21i Removed boot flag
I was trying to boot from the sdcard, as I thought it was a boot order issue, I disabled the boot flag on the boot partition. Now my phone will not turn on, or enter bootloader. I have found various ...
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0answers
15 views
How do I unfreeze my LG L15G sunrise?
I keep trying to turn it on and at first it just got stuck in a boot loop, so i factory data reset it and after the reset when it boots itself up it freezes on the LG powered by android screen. I have ...
0
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0answers
28 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 ...
0
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0answers
35 views
what does ddi stands for in android os?
What does ddi stand for in android OS?
My phone g532f couldn't power on, but enter download mode just by using "jig USB" !!.. this message appears in download mode. ddi read failed (in rad color) ddi ...
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0answers
36 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 ...
0
votes
1answer
16 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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32 views
Unable to have applications run on startup Android 7.0
I can't seem to get any applications to start at boot. I wanted sshd to run at startup so I installed "Termux", "Termux:Api" and "Termux:Boot" and followed the instructions and placed the startup ...
