General :: Can Android USB Interface Act As Boot Device?
Aug 22, 2010
Very often I find myself needing to reset or get around someone's Windows Password, the easiest way of course is with one of many available linux boot cd's that'll edit the windows system hive. However most of the time I'm not carrying this around, I have a USB stick that can be used but I noticed earlier that while my Nexus One was plugged into the USB port on boot it is detected by my bios.
So the question is - Can the android USB interface act as a boot device? If so I assume it'd need a different partition since it's already got an OS?
(Also while I have your attention: 1) Did they ever fix the +1 area code problems with contacts?, 2) Why don't half my contacts show up in Send MMS dialogue (and others)?, 3) How do I tell if I have an SLCD or AMOLED screen cos sometimes the screen looks really crappy (dithering or off colour banding) AND FINALLY 4) can you set notification sounds differently depending on time of day (ie; I don't want a new gmail alert to wake me up at 2am.
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Mar 10, 2010
I would like to see a site where I can register and specify features for a phone and get notified thru email when a device comes to market with those specification. Is there any service already? I am looking for a phone which has the following features:-Android OS 2.1 - with the default google supplied interface(i choose this because , i believe google will try to make future updates in android available for all phones)
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Nov 10, 2010
I am working with custom microSD cards. I'd like to be able to maintain power to the microSD card while the handset sleeps.
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Jul 3, 2013
If I take the SIM out, the device will boot and give me access to contents, (obviously, phone is off).BUT if SIM is in, I cannot get past the pin input screen, and this is exactly what I want to do.
I want to be able to give the device to my son to i.e. read a pdf, but I do not want him to be making / answering calls on my SIM.
Sure, I can take it out, but do not want to if I do not have to. (I might lose it too!)
In other words, if no pin is entered, one must be able to use all but the phone on the device.
After all, the lock is for the SIM, not the device!
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Jul 3, 2013
If I take the SIM out, the device will boot and give me access to contents, (obviously, phone is off).BUT if SIM is in, I cannot get past the pin input screen, and this is exactly what I want to do.
I want to be able to give the device to my son to i.e. read a pdf, but I do not want him to be making / answering calls on my SIM. Sure, I can take it out, but do not want to if I do not have to.
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May 9, 2012
.My phone isnt detected by ADB during its boot. After bootup it shows up in the list of attached devices. Im trying to port MIUI v4 to my device so I need a logcat during the boot because it just hangs at the bootanimation but ADB doesnt see my device during boot. If I force a logcat, the log is emply.
I have tried several ROMs and on both Windows and Ubuntu and still no result.
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Apr 9, 2014
I Have An Ainol Novo 7 Crystal Tablet..(Rooted With TWRP Recovery&Cyanogenmod 10.1 Installed).It Was Working Fine Till This Afternoon But I Don't Know What Happened Next..I Turned Off My Device And I Tried To Turn It On Again After Some Time But It Wasn't Booting...
I Don't Even See Any Boot Animation Or Android Logo That My Device Used To Display While Booting,The Screen Of My Device Lights Up Though..And I Can't Even Boot Into Recovery (I Have TWRP Installed),When I Try To Boot Into Recovery I Don't See The Android Logo That I Used To See But The Screen Of My Device Lights Up And Doesn't Boot Into Recovery.. I Tried Removing TWRP Recovery From My sd card And Booting Into Recovery But The Screen Lights Up For Like 5 Seconds And Then The Light Goes Off..
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Sep 28, 2012
I was trying to get dump_image boot from my device, but I got this instead
Code:
shell@android:/ $ su root
su root
shell@android:/ # dump_image boot /sdcard/boot.img
dump_image boot /sdcard/boot.img
sh: dump_image: cannot execute - Permission denied
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Nov 20, 2013
I had made changes in S/W as suggested in post : [URL] .....
The device I am working is also having wake up lag about 2 sec.It varies from 1.2sec,0.8sec,1.8sec..etc. I implemented the new wake log to prevent the phone from deep sleep as you have mentioned. Now the time required for wake up from deep sleep is reduced to 0.8s and its quite consistent. Although I have to yet check for battery consumption during deep sleep.
However I have found that now when the phone is reset the battery consumption is more during the power up of the phone. For Ex. from 36% before power up and 24% after powerup.
Checked with another device and its only taking 3% for boot up.
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Mar 24, 2014
i was trying to change the background for my x'pop 5035D cause i'm in jelly bean 4.1.1 and all the backgrounds for the system is white and it's very bad for my eyes specially at night ,
i was trying to modify framework-res.apk that exist in :system / framework but i couldn't so i thought i can replace it and i downloaded another frame work- res.apk and i used root explorer to replace it after taking a copy of the original file and since i did that the device restarted and stuck at the logo and i can't boot.
i tried every thing , i did nandroid restore and even wipe data / factory reset and the same result it just stops at the logo every time .
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May 19, 2012
Here is my vold.fstab WHICH I think is the problem
dev_mount storage_internal /mnt/sdcard 7 /devices/platform/sdhci-tegra.3/mmc_host/mmc1
dev_mount external_sdcard /mnt/external_sd auto /devices/platform/sdhci-tegra.1/mmc_host/mmc2
dev_mount external_usb_disk /mnt/usb_storage auto /devices/platform/tegra-ehci
This is for a Dell Streak 7 ( a tegra 2 device) for a CM9 port.
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Feb 1, 2014
I have a Galaxy Nexus with the volume buttons spoilt (not functioning). It is rooted and running on AOKP's 4.4 rom. I accidentally installed the wrong kernel and while panicking, I wiped the data and davlik cache. Now, I am stuck in boot loop. Also, when I plug it into the computer, the phone is UNAUTHORIZED according to adb server.
Is there any way to authorize my phone without booting into the OS itself?
or
Is there a way to boot into bootloader/recovery without authorizing the phone and without using the physical buttons of the phone?
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Jul 21, 2010
I write a app but it is not doing anything..code is given below:
CODE:...............
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May 24, 2010
I have written a class which extends the Service class of android and would like to launch the service during device boot-up. From the service I would like to receive the intents such as boot completed and screen off and on. Currently I am using a BroadcastReceiver to get the boot completed intent and then on starting a service to receive screen on and off intents. But I would like to remove either the broadcast receiver or the service. Any inputs.
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Mar 24, 2009
There are some question bother me.
How to fix landscape mode when boot on device?
I had change manifest.xml ->
CODE:...........
But that only change sensorDemo screen. That doesn't I want. I want to set landscape mode when boot on device and show main screen. what methods does I try it?
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Sep 20, 2010
I have registered a Receiver component for ON_BOOT_COMPLETED broadcast, in my application. The receiver does just prints a line in its onReceive() callback. However, when I boot the emulator(by executing Run as->Android application command from Eclipse) and unlock the screen on start up, I get an ANR dialog displayed in my Application. Following are the exceptions logged:
CODE:.............................
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Nov 12, 2010
I need to use this for a Samsung Tablet.Usually if the device is switched-off and the USB cable is being connected the display will wake up for some seconds showing an animated battery.Instead I want to let it boot.I suspect this is close to the metal. Where do I have to make a modification?In the kernel, in the Android platform, or is this hidden in some proprietary code of the manufacturer?
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Oct 25, 2011
My wife's vehicle has a USB port into which she can plug the USB cable for her iPhone and play here music through the car stereo. Is there a cable that will allow for this on my Android device. Specifically, I have the Bionic. I didn't think it would play media through the USB port, and I didn't think there is an HDMI to USB cable, but I wanted to check.
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Jan 20, 2013
I recently installed Android bootloader interface to make possible rooting of my phone. However, can I reverse somehow the process and remove the android logo and bootloader interface?
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Jun 7, 2014
Is there a place where I could find open source examples of User Interfaces for android apps. Like a project containing custom buttons, isons, sound effect, a nice layout with multiple blank activities that serves as a skin for your app. Strangely I didn't find anything like this whereas there are plenty of themes.
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Oct 4, 2012
I try to understand android boot sequence on my JB (under CM10). I found some docs and there should be specific partitions (boot, recovery, system, cache, data).
My understanding of the boot sequence is now:
A) normal boot:
1) Power ON ->
2) bootloader ->
3) boot-partition where i flashed the kernel aka boot.img ->
4a) system-partition with the OS (libs, UI, etc) where i unpacked over CWM my customROM.zip ->
4b) data-partition, where i unpacked google-apps.zip and installed all the apps ->
4c) cache-partition with user data
B) recovery boot (adb reboot recovery):
1) Power ON ->
2) bootloader ->
3) recovery-partition with CWM where i may unpack all the .zip stuff to proper partitions, or restore from sdcard, etc.
Is this correct? I wonder, because i didn't installed CWM into recovery-partition. It cames from install of CM10 (fastboot -i 0xfce flash boot boot.img), so it must be in boot-partition and not in recovery?
So, next confusion: i looked up to /proc/mtd and i don't see neither boot nor recovery partition here:
Quote:
# cat /proc/mtd
dev: size erasesize name
mtd0: 19000000 00040000 "system"
mtd1: 00600000 00040000 "appslog"
mtd2: 06580000 00040000 "cache"
mtd3: 1a400000 00040000 "userdata"
I did a backup with CWM and loocked the data. There aren't boot, and recovery backups:
Quote:
# ls -lha /sdcard/clockworkmod/backup/2012-10-04.18.49.55/
d---rwxr-x 2 system sdcard_r 4.0K Oct 4 18:56 .
d---rwxr-x 3 system sdcard_r 4.0K Oct 4 18:49 ..
----rwxr-x 1 system sdcard_r 1.6K Oct 4 18:54 .android_secure.vfat.dup
----rwxr-x 1 system sdcard_r 54.6M Oct 4 18:55 cache.yaffs2.img
----rwxr-x 1 system sdcard_r 360.2M Oct 4 18:53 data.yaffs2.img
----rwxr-x 1 system sdcard_r 212 Oct 4 18:56 nandroid.md5
----rwxr-x 1 system sdcard_r 214.6M Oct 4 18:51 system.yaffs2.img
#
So, i think i didn't understand the boot sequence and partition schema corectly.
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Sep 12, 2013
I am trying to do some low level performance testing related to device processor cores through adb which I feel it is affected by Android background services and system stuff.
As I know that the Android boot sequence stages are as follow:
1.Execute Boot ROM code.
2.Execute the boot loader.
3.Load the Linux kernel.
4.Launch Zygote, which initializes the Dalvik VM.
5.System server which loads the Android system.
So my question is how can I interrupt this sequence to force it stop on stage 3 to load Linux kernel. This can implement my intermediary performance testings before loading again Android system.
Does Fastboot or Clockworkmod recovery can load my device to a kind of Linux kernel?
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Jun 13, 2012
Instead of seeing the boring old Android logo or my service provider's logo, I'd love to see the standard text-based Linux boot screen that shows the status of all the hardware and configuration info as my phone boots. My current phone is an HTC EVO 3D running Cool ICS with Sense 3.6 and Revolutionary CWM.
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Jun 11, 2013
In apps like Gmail and Franco's kernel updater, there is a new interface element that brings out a drawer on the left side on Phone DPI that on Tablet DPI is a split screen.
Is this something that has to be programmed into the app, or something that can be edited into older apps? Mainly I would like that interface in the stock Email application.
Nexus 4 using xda premium
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Jun 23, 2010
So I am new into the world of playing with phones. I come from the computer realm as an engineer for the past 10years or so. So far I have not tried to root or anything but I fully intend to give it a try in the very near future. Anyways the reason behind this post is I am interested in the possibility to dual boot my device. i.e. I want to keep the stock build of 2.1 with sense but I want to be able to still play around with a 2.1 or even 2.2 (hopefully) ROM without losing my stock setup. Is this even possible? I hear a lot of people also saying they switch between ROMs often. Can you do that without losing all of the data that you have loaded on the phone already? If that is the case then switching back and forth between stock and a new ROM takes out the need for the dual boot requirement.
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Jun 22, 2013
I Have a Galaxy note, and I wanna change the User Interface of my phone. How do I do that? I mean the way everything looks( musics, buttons, settings, everything.) I dont if I am doing the right thing, but I downloaded some PSD files of interfaces I really liked, but I dont know what to do next.
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Jun 28, 2013
I have been struggling to root my new tablet for 2 days now without success.
I also have apple devices and jailbreak them for years without any problem but today I am completly stucked.
I am unable to intall correctly the ADB Interface... It is impossible.
I tried to install, desinstall, reinstall many times the usb drivers. Restart the computer many times...
I tried the SDK android tool with installation of the USB driver package v7.
I still have an exclamation point on the device !!
When I try to install the drivers, it always tells me:
"An error occurs during the hardware installation A service installation section of the INF file is not valid".
I am under XP 32 bits SP3.
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Nov 16, 2010
Credit to Daali at MyDroidWorld
http://www.mydroidworld.com/forums/droid-x-themes/5361-d-amn-small-linux-bootanimation-droid-x.html
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May 30, 2014
I have found myself resetting to factory default, and having to reconfigure the settings all the time, for example, in System Settings > Navigation > Navigation bar. Is there a way of backing these up, and restoring?
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May 7, 2014
I've been going over the android sdk for the past year to find out if there is a way to change the network type(2g/3g/4g), in phones with root access.However I couldn't find any way to do this.Asking around,someone told me that I could do this using reflection,by calling a method on a phone instance.Looking through the source code,I did find a setPrefferedNetworkType(); method in the Phone Interface,inside the internal telephony package.Is there anyway I can use this to solve my problem.I can't seem to find a way to get an instance of a class that implements the interface.Or is there any other way to do it entirely?
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