Questions tagged [boot]

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

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1answer
37 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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18 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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12 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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1answer
85 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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27 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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17 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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0answers
884 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 ...
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2answers
519 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 ...
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1answer
74 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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11 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 ...
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0answers
8 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
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1answer
363 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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0answers
15 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
54 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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38 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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38 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-...
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0answers
55 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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0answers
91 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
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1answer
300 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
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1answer
82 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 ...
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0answers
24 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
76 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
13 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 ...
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0answers
26 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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0answers
23 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
22 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
14 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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26 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 ...
0
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1answer
27 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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0answers
21 views

Nexus 7 not booting past google screen

I tried to factory reset my Nexus 7 this morning and it took 4+ hours, it stayed on the "erasing" screen so I got bored and turned it off, I figured no factory reset takes that long. Now when I try to ...
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2answers
517 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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0answers
589 views

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 ...
1
vote
1answer
154 views

Armv8 image stuck on booting process

I can't make it to boot an armv8 image (API24, Nougat, Android 7.0) to boot successfully in Android emulator. The Emulator software was updated today to the latest version. The first problem I can ...
0
votes
1answer
34 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 ...
1
vote
2answers
279 views

Redmi 3 stuck on bootloop with no recovery mode access

I have a Redmi 3 MIUI7 that I recently flashed with MIUI9 using TWRP. Right after flashing, I tried to boot it but it stuck on a bootloop. Since I haven't booted into the ROM and can't do so because ...
0
votes
1answer
76 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, ...
0
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1answer
27 views

What do options on this error mean?

I have Acer E39 phone (Android 4.4.2) that has 3 SIM. Today, when turned on, it didn't start normally but instead, I got the following options. What does each of the options mean? How do I debug ...
2
votes
1answer
81 views

Why is there “/proc/net/snmp” file on my device? Could it be due to a malware?

After reading this paper I observed a little and I realized that an SNMP socket (exactly two: v4 and v6) exists when I use ls /proc/1/net. I see them clearly. My question is simple, do the bootkits ...
-1
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2answers
116 views

Fixing a kindle fire X43Z60

So I have a Kindle Fire. One day I was stupid and deleted a bunch of stuff in the /system folder. Now, it no longer boots. No ADB, no fastboot, no nothing. However, it still shows the static boot ...
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0answers
21 views

I am in stuck with rebooting Samsung S5 in normal mode rather than recovery mode. How to fix?

Consider the following thing first: My Power Button doesn't work at all. My phone was on and I connected the phone with PC and ran the following command in adb adb reboot recovery Then it opened ...
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1answer
460 views

Can't Flash Google Factory Image - No Boot Partition

I seem to have bricked my phone but thankfully the bootloader is unlocked so I'm sure there is a way to fix it. I am having a hell of a time though, I think I need to re-create the boot partition ...
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0answers
24 views

Asus not able to charge or boot

I have a strange problem. My device is Asus Zenfone Max ZC500KL. I have a LineageOS (forgot the version but Android 7 or 8 I think) on it. The battery is drained and at 0%. And as soon as I plug it ...
0
votes
1answer
31 views

Where do the exact locations of the phone buttons combinations stored?

Where do the exact location of the phone button combinations like power reset while holding Volume down + Power, booting to recovery by holding Volume up + Power + Home (if there is a Home button) is ...
0
votes
1answer
263 views

Huawei Ascend Y530 will not boot

I have a huge problem with my Huawei Y530 cell phone. Today I received a phone call, but instead of actually ringing, it just vibrated once, and an error message popped up saying something along the ...
0
votes
1answer
43 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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0answers
35 views

SM-G130E phone is not booting after the Samsung Logo (Samsung star Duos 2)

This icon (!) comes when im trying to hard reset by Volume up + Home + Power. Any solution?
1
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0answers
150 views

Access file in sdcard from init.rc

I need to copy a file from the external SDcard to a location in the root partition, during the boot process (from init), after /data is mounted. I used Carliv's tool to add the following line to init....
2
votes
1answer
312 views

actual limitations of locked bootloader

I have read in many posts that a locked bootloader prevents from flashing custom ROMs, because it checks the digital signature of the ROM itself. I thought a "bootloader" was only responsible for ...
1
vote
1answer
107 views

What position do cellular communcation (1G, 2G, 3G, 4G or other function only implemented in phone) play in Android operating system archtecture?

I am entirely new to Android, but have a little knowledge on Linux. I have view the architecture graph of android on official site: The Problem: Not all android device support cellar network. As a ...
0
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2answers
40 views

Stuck in system recovery

I have a hTC D626w, after an interrupted update, it does not boot any more. When I enter recovery mode, I see the following message at the bottom of the page: No file end with factory_update.zip ...