Questions tagged [boot]

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

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65
votes
1answer
301k views

How can I stop applications and services from running?

When my phone starts up there are several application/services running in the background that I would rather not. And when I press the Home button while using an app, that app usually goes into the ...
50
votes
7answers
140k views

How can I run a script on boot?

I'm accustomed to running scripts on boot in Linux, but I'm not sure how to do this in Android. I'd like to start my SSH daemon on start, so I'll always be able to connect. How can I run an arbitrary ...
34
votes
8answers
145k views

ADB can discover devices but not fastboot

I've searched on the web about this problem and it's usually solved by installing the appropriate drivers. Problem is I'm on a Mac. When I plug in my device, it can be discovered when I run adb ...
32
votes
10answers
101k views

Android x86 Marshmallow not booting on Virtualbox and VMware Workstation

I've downloaded the latest Android x86 (android-x86-6.0_20160129.iso) from here and tried to install it to the HDD on a VM in VMware Workstation and in Virtualbox. The installation seems to proceed ...
23
votes
1answer
12k views

Can somebody explain the boot process of an Android device?

From the user's perspective when switch on the phone, I see two boot animations in my LG P500 running CM10. The first animation is from LG and the second animation is from CM10. Then it settles in ...
19
votes
2answers
29k views

Does android keep a log of when it starts?

I'm making a parental control/accountability app for android. It consists of a monitoring service that runs in the background and starts when the phone is booted. Unfortunately, I have found that ...
19
votes
1answer
156k views

Open an app on startup/after booting

I need to force a selected application to start up each time my Android-based device is (re)started. Is there anything I can use (configuration setting, external application etc.) to accomplish this ...
16
votes
1answer
474 views

What's the name of the protocol that android devices use in debug mode?

I have a strange Android prototype what we got from a customer. Said customer has forgotten about it, and I'm now fiddling with it to see if I can make it do anything interesting. The device appears ...
15
votes
3answers
62k views

Is it possible to boot an Android phone from a USB drive?

Is there any way to boot an Android phone* from a bus-powered USB drive**? If so, what are the steps to achieve this? * E.g. one with USB OTG functionality. ** E.g. a flash drive.
15
votes
1answer
10k views

What is the difference between aboot and boot?

I'm looking through my device and I noticed within /dev/block/platform/msm_sdcc.1/by-name that there is boot and aboot partitions. What is the difference between them? Mainly what is aboot?
14
votes
1answer
25k views

How can I reset my developer options, or otherwise boot my Galaxy S2 on CM10.1 again?

I have a Samsung Galaxy S2 and the ROM I'm using is CM10.1. I was messing with the Developer Options and I saw an option called "Simulate Secondary Display". I clicked that and selected 720 then it ...
13
votes
2answers
109k views

Nexus 5 stuck on “flying color dots lollipop” screen after Hard Factory Reset

I just did a wipe data/factory reset on my Nexus 5. I followed this YouTube tutorial. I'm stuck on the boot screen, which was my problem in the first place, and it's been on the boot screen for 25 ...
13
votes
2answers
23k views

How to use android phone without battery?

Some android phones have removable batteries, and others are non-removable. It is the battery capacity that makes the device alive for hours. Also, the device can be used while charging. My question ...
13
votes
1answer
3k views

How to speed up Android during bootup time?

I'm looking at the bootup time of Android on my embedded device and I'm trying to get a sense for where I can save some time. 1) What are some things that you've done to really help speed up the ...
10
votes
2answers
126k views

Flash boot.img without using fastboot USB

So I've recently rooted my phone and tried a ROM or two. I find it really handy that you can use TWRP recovery to install another ROM from the SD card, you don't need to have it connected to a PC. ...
9
votes
4answers
98k views

Galaxy S GT-I9000: how to fix boot to recovery with Volume up+Power?

I have Samsung Galaxy S (GT-I9000) and I've installed Cyanogenmod 10 M2. I can reboot into recovery from Cyanogenmod (Hold Power button, select Reboot and Recovery). However, I cannot boot directly to ...
8
votes
3answers
4k views

Why does Android Boot relatively so slow?

This question is of concern to me (and perhaps many out there) because there is no spinning part in my phone. My phone has a Quad Core, 3 Gig of RAM, and so much storage space, all SSD-like in ...
8
votes
6answers
10k views

How to run a script on boot in CM12.1?

Most questions I can find related to this are dated 2011 and thereabouts, so perhaps it's not too surprising that things have changed since. I've tried a whole bunch of things, with no results ...
8
votes
4answers
39k views

Turn phone on with ADB or Fastboot?

My power button seems to have busted, is there a way I can boot my phone using ADB or Fastboot or some other command line interface?
8
votes
2answers
29k views

How can I enable adbd during boot on Cyanogenmod?

I am stuck during the boot process, at first before entering the passphrase for /data and now at the SIM PIN screen. At this point, adb is inaccessible (normally adbd would start up after unlocking /...
8
votes
3answers
4k views

What is my phone doing when the boot takes a long time?

I have a Samsung Galaxy S with stock Android 2.3.3 (with carrier modifications, regretfully). Usually, when I reboot the phone, it shows the boot animation for a few seconds, then goes to the lock ...
7
votes
2answers
44k views

How can I recover files from a phone that won't boot?

I have a Galaxy SII, and it is stuck on the boot screen. How can I recover the files on the phone?
7
votes
2answers
1k views

Why does adb work only while the tablet boots?

I have a Samsung Galaxy Tab. When I type "adb devices" or "adb shell", it works while the tablet is booting up - showing the Samsung logo or animation - but once the orange lock screen shows, the ...
7
votes
2answers
12k views

Samsung Galaxy S3 not booting up, just shows ”Samsung Galaxy S3 GT-19300” black screen

This morning I woke up to my Samsung Galaxy S3 which just “hung” during the start-up screen with the white text “Samsung Galaxy S3 GT-19300” on a black background. It never comes to the “Enter Pincode”...
7
votes
0answers
1k views

How to get to know via command-line/adb where boot process hangs?

Question: (How) is it possible to get to know via adb where exactly a booting-up android device is hanging? My problem/ background information: I recently did changes on the automatic display ...
6
votes
1answer
6k views

Show boot log at boot instead of boot animation?

I have a Nexus 5 running CyanogenMod 11. Normally, my boot animation looks like this: Instead of this, I'd like to have something that simply shows me the contents of dmesg, or something else that ...
6
votes
3answers
8k views

Atrix will boot up but unlock screen is unresponsive

I'm having my first major issue with my phone, the Atrix (not Atrix 2). The phone is stock Gingerbread, not rooted, and I don't download any dubious or non-Market apps. While using my phone today it ...
5
votes
3answers
4k views

Does Android support the single-user mode runlevel?

Since Android is powered by a Linux kernel it should support booting in single-user mode. Which version of Android supports single-user mode and how is one able to start an Android device in this ...
5
votes
1answer
8k views

How does the typical Android boot process work? [duplicate]

Possible Duplicate: Can somebody explain the boot process of an Android device? Windows follow some specific way to boot: Start System > BIOS > Load Boot loader > Load WIN Kernel > Load WIN Shell ...
5
votes
1answer
3k views

Backup/dump kernel image (and full ROM) without root for Mediatek Devices

I would like to pull the boot image of my device Pipo N7. I don't have root. I found the following link: Backup/dump kernel image without root or twrp/cwm` But when I try to find /dev -name 'by-name'...
5
votes
1answer
715 views

Start services at boot [duplicate]

How to make applications start at boot? I have at least 2 which I'd like to start automatically but they don't (I need to manually start them to have services run in background): Skype Lookout
5
votes
1answer
15k views

Autoplay video on device boot

I have a Noontec A9 Android Smart Box TV thingy that needs to play a video on loop for a very long time. I found multiple apps that can do this but I am looking for one that will start playing the ...
5
votes
1answer
8k views

booting Android from SD card

The device model is Samsung Galaxy Note 8.0 (gt n5100) It's not booted yet had developer mode activated. The flash memory is completely broken (which probably means the bootloader is gone as well?), ...
5
votes
1answer
2k views

Android early boot console over usb

I'm trying to port newer kernel versions onto my Nexus S device. Most newer kernels panic very early on in the boot process. I would like to debug this. However, since the phone has been provided to ...
5
votes
1answer
764 views

Phone boots very slow and restarts by itself

My problem is when I turn on the phone, the Google logo stays stuck and after unknown minutes boots in with the software animation, but very slow and then starts over again! First a little history of ...
5
votes
2answers
42k views

How do I fix my boot-looping Samsung Galaxy Tab 10.1?

I have a Google IO Samsung Galaxy Tab that has decided it no longer wants to boot properly. It just constantly goes from the 'SAMSUNG' logo that flashes a couple of times to the stars and lines ...
4
votes
2answers
72k views

(Re)boot an Android phone from USB

I own a Samsung Galaxy Note 1 (not rooted) and its lock button doesn't wrok anymore. That means I couldn't boot my phone if it happened to be turned off. But I need to restart it now because it's ...
4
votes
2answers
11k views

How to enable adbd to listen to a port at boot time in Android?

I have a rooted HTC Hero, and what I want to do is to enable the adbd to listen to a port at boot time. I tried some code found here: setprop service.adb.tcp.port 5555 stop adbd start adbd in an ...
4
votes
2answers
9k views

Set Warranty Bit: Kernel

So whenever I boot up my device or restart it I see a little yellow message in the top left corner of the screen that reads "Set Warranty Bit: Kernel." I have researched this issue and learned that I ...
4
votes
2answers
1k views

I Accidentally Deleted the Launcher

I was making some tests on my android phone and I accidentally deleted the launcher from the system partition and I forgot to copy the new one to the system partition again, and the phone doesn't show ...
4
votes
1answer
2k views

Problem with updating CyanogenMod - Phone will no finish booting up

TL;DR Updated CyanogenMOD with ROM Manager and when it rebooted it is stuck on this screen: I have an EVO with cyanogen 7. The ROM Manager app notified me of of an update. I clicked through ...
4
votes
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 ...
4
votes
2answers
50k views

what is the download mode

could anybody explain what is this download mode? As described in here How to root Innos A35 as I hold vol up +vol down 5 seconds and at the same time connecting the USB cable to my computer it shows ...
4
votes
1answer
73 views

How to see what applications do some actions when I power on my phone?

I believe there's some set of “hooks”, which get executed when I power on the phone. I want to see it to figure out the reason why my phone sometimes doesn't wake up properly (wakes with black screen)....
4
votes
1answer
326 views

A different kind of Safe-mode?

I was playing with some Xposed modules on Galaxy S4 Mini phone and then after applying some changes, it stopped booting and stuck on boot logo screen. So, i tried to boot it up again in safe mode by ...
4
votes
1answer
3k views

How to hard brick an android phone (Galaxy Nexus)?

I'm trying to figure out whether or not I managed to brick my android phone, a Galaxy Nexus*. Using ClockworkMod Recovery, I pretty much erased everything I could find (/data, /cache, /factory, /...
4
votes
3answers
6k views

How to create start up scripts using the init.d folder?

In this answer to a question I asked a while ago, he said it's possible to have a script executed every boot. I created a file (without extension) that contains the following: #!/system/bin/sh ...
4
votes
1answer
2k views

G1 Unable to get past android boot logo

I have a T-Mobile G1 (HTC Dream), this morning it vibrated once and then restarted, it then went to the android boot logo went through that and stopped at a black screen. I've tried pulling the ...
4
votes
2answers
6k views

Recover Nexus 6P that won't boot past Google logo

So I had a random reboot while debugging apps with android studio and after that device doesnt boot past Google logo. Factory reset and cache wipe do not help. Eventually I found this guide https://...
4
votes
1answer
492 views

How to determine cause of boot halt in Samsung logo screen?

The apps kept crashing on my phone (even MIUI Home) so I shut it down using the long power press and selecting shut down/power off option. When I powered it back on, it just stays stuck on the ...