General :: Android Boot Sequence And Backup / Access To Boot / Recovery Partitions?

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.

General :: Android boot sequence and backup / access to boot / recovery partitions?


ADVERTISEMENT

General :: How To Interrupt Android Boot Sequence To Force It Boot To Linux Kernel Only

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?

View 2 Replies View Related

General :: Can't Boot Into Recovery - How To Access Phone

Oct 22, 2012

I've been trying to track down a solution to my problem, but every solution seems to contain a "Boot into recovery mode" line which I cannot do. I attempted to update a rom that I had installed, and now I am stuck at the google logo with the unlock icon. I cannot boot into recovery with the volume keys and power, and now I cannot figure out how to use adb to recover the phone, as it cannot recognize it.

Is there anyway I can access this phone while it is in this state from my computer and recover it somehow. I tried following leads that people have posted in other threads, but it seems like most suggestions involve "Use adb", yet every adb tutorial involves the phone being in recovery mode. I've tried to uninstall and reinstall drivers via Wug's Toolkit, but when I plug my phone in, I am not able to install the drivers properly. I try to run adb items through the console, yet it does not recognize my device.

Is there anyway to install the necessary software I need and recover my phone while I cannot get past the google logo screen?

I am using a verizon galaxy nexus

View 4 Replies View Related

General :: Galaxy Ace Can't Boot And Not Able To Access Recovery Mode

Jun 15, 2013

I used my galaxy ace (I had the low memory icon) when playstore has updated an application, then suddenly all my applications are set to "force stop" including Holo launcher, so I rebooted, but the I had teh cyanogenmod 7 icon repeat (bootloops) I cann't access to the recovery mode (I had RAMDUMP mode (ARM9 mode)) I can access to the "downloading" mode so I wanted to flash a stock rom (even three in fact) with odin multidownload 4.38 but nothing happens when Odin has restarted my phone, I had the little android image that works then a message like: "E: failed to mount storage (invalid argument)" and the phone started to reboot loop I've tried dozens of manipulations unsuccessfully kies does not see my phone I do not know what to do,

PS: I've tried all the manipulations removing the battery / SIM card and sd waited 5 minutes, I was able to put the phone in Emergency Mode DLOAD but it nothing happens the only real thing that still works is the "Downloading "mode , but I think my recovery mode was crushed and I cann't access it even when I can flash with odin I always have the problem of "E: failed to mount storage" (the same style as him [URL]...

View 2 Replies View Related

Nexus : Unable To Boot Main Image Or Access Recovery

Oct 29, 2010

I have a Nexus one and I have made a bit of a mess of it when loading a custom rom. Previously I'd rooted (without unlocking) the stock (2.2) rom before loading Cyanogen 6, later Cyanogen nightlies and finally eViL-NXSense-v1213. I was rather enjoying the last one but had severe stability issues which I think was due to using Titanium Backup and restoring data. I was in the process of re-imaging to eViL-NXSense-v1213 after clearing the SD card, data and various caches when something seemed to happen to the recovery image. I can get into the boot loader but if I select Recovery it shows the Nexus One logo indefinitely and doesn't respond to the power button being pressed, the same happens if I turn it on from cold.

Is it possible that the recovery image has somehow been corrupted? If so what can I do to restore a recovery image that will enable me to install a custom rom. I would prefer not to unlock the boot loader but will do it if necessary.

View 1 Replies View Related

Sprint HTC Hero :: Copy And Post Files For Boot Sequence?

Aug 3, 2010

Is it possible that someone who still has 1.5 on their Hero to copy all the needed files for the COMPLETE boot sequence and post it so I can download it? Someone has already posted the HERO logo with the android waving but I would like the whole boot loop.

View 5 Replies View Related

Motorola Droid X :: Won't Boot Past Motorola Logo Nor Boot In To Recovery

Sep 16, 2010

I tried installing Tranquility and must have screwed something up because now my phone won't boot past the Motorola Logo. It's been sitting here like this for about 15min and I can't even boot into recovery by holding the power and home buttons. I don't know what else to do now. Idk if my phone is bricked but even if it is don't I need the SBF file to unbrick it and I can't find that file any where. I did a nand backup or whatever before doing any of this so hopefully that can help me. What should I do now?

View 9 Replies View Related

Samsung Galaxy S : Recovery Boot Error - Can Not Access To /system/csc/VOD/system

Sep 4, 2010

Phone: UK Galaxy S Issue: Recovery boot error message in red writing

Multicsc : can not access to / system/csc/VOD/system/

Background: I have been trying to root my phone from information found in a youtube video. All went well and the little ninja bloke with the sniper rifle was in the app list. Tried installing busybox and was told that the phone was not rooted´┐Ż..

I think I ran the root application again and at some point I started getting this error message when in recovery. I have since run the one click root method to unroot the phone and the little nija dude is no longer there. Since I rooted the phone it will no longer connect to my wireless network, it finds the network and attempts to obtain an ip address. After a few min it times out and tries again. When I load the phone recovery the error message is still present.

View 3 Replies View Related

General :: Can Android Boot Logo Screen Be Configured To Show Linux Boot Logging

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.

View 2 Replies View Related

General :: Ace 3 Can't Boot Recovery

Dec 13, 2013

I have a new ace 3 LTE S7275R. I tried installing CWM recovery found here: URL....I tried with odin 3.07 and 1.85Every time, odin shows success, but when trying to boot into recovery, the phone gets stuck at "recovery booting...."The phone is otherwise working...getting CWM to work? how can I return to stock recovery at least?

View 4 Replies View Related

General :: Cant Boot To Cwm Recovery?

Oct 17, 2013

So I just got my S4 rooted and everything seems correct. I then installed Rom Manager so I could start demoing some of the ROMs out there. Went through all the steps to flash Rom manager as the recovery but I cannot get my recovery to go to CWM, it just keeps going to the stock android recovery. I have googled the crap out of this and am coming up with nothing. in fact I have written several android apps but this just does not work.

My device is a Verizon Samsung S4 model SCH-I545 running android version 4.2.2 Kernal: 3.3.0-690088se.infra@S0210-13#1

View 3 Replies View Related

General :: Android In Boot Loop - How To Backup Contacts

Oct 14, 2012

I have a Samsung Galaxy Mini with stock Android 2.2, not rooted and USB debugging is not on. Now the phone memory was quite full so I tried to remove the Street View app, but now the phone is stuck in boot loop mode. The Samsung logo is just glowing and the phone vibrates now and then.

I can get into download mode and recovery mode. I think I can flash a new firmware in download mode and then the phone would work fine then, but my big question is how I can save all my data (contacts, notes and so on)? Is it possible to backup an image before flashing, in recovery mode? Or is it possible to save just all my own files (contacts, sms and so on, and not the whole system)?

I guess everything will be flashed over when I reflash? Or is it in some way possible to reflash a new rom (maybe it needs to be the same 2.2 then?), so that my personal data will stay? I also tried to download files with "adb pull" but the /data folder can't be mounted, it just says permission denied, so I can't access my personal data with adb.

View 9 Replies View Related

General :: Android RK30SDK Mini PC - How To Boot Into Recovery

Apr 15, 2013

I was a little too enthusiastic about this new device and thought I would get the resolution just right before getting my backup systems in place. Big mistake. When I rebooted, the icons were so small I could not make them out. I finally got back into LCD Density, but was not able to make any changes or revert back. I was just able to make out the android settings menu and navigate to the reset menu. Unfortunately, while the OS was reset the screen density was still not right.

This is the RK3066 dual core android mini pc. I do not know how to boot into recovery. There is no place for a paper clip like on the older mini android pcs. I don't see a tried and true method. I have Android SDK and various root tools on my win 8 desktops.

View 1 Replies View Related

General :: Can't Boot To Recovery On Galaxy

Mar 27, 2013

i wanted to upgrade my galaxy s2 g i9100 and since that time i hve not been able to use the phone again.

i tried rooting it but after that i can not boot recovery anymore all that comes on the screen is SAMSUNG GALAXY SII with a yellow triangle.even if i press the up volume key+home key+power nothing happens.

View 1 Replies View Related

General :: Can't Boot Into Recovery - Karbonn A6

Apr 10, 2014

I have a Karbonn A6 phone given to me by my friend because it was locked. It's asking for gmail user/pass but he doesn't have it. I tried to boot into recovery mode using Power+Volume Up button but all I get is a white triangle with an exclamation mark in it. I can't seem to go beyond that. USB debugging was perhaps not enabled unless it was enabled by default. There is no camera button, only power and Volume Up/Down. What do I do?

I just need to get this phone working somehow. Is there a way to use a computer and a USB cable to get it running?

View 2 Replies View Related

General :: Droid 1 Won't Boot Into Recovery

Sep 25, 2011

I have tried using rom manager, holding the power button and selecting reboot recorvery, and by holding the power button and x. Each way I see the white m twice then the phone just boots up. I am running cm7 7.0.3. I have only had the phone for a week, I am trying to wait for the vigor. It worked fine Friday when I flashed cm7

View 4 Replies View Related

General :: Can't Boot Into Clockworkmod Recovery?

Oct 11, 2011

I'm on a Galaxy S2 running Gingerbread 2.3.4, my baseband version is I9100XXKI1 and my kernel version is 2.6.35.7-I9100XWKH4-CL487028root@DELL136 #2

Using Odin3 v1.85 and S2 Root. (Superoneclick kept freezing on me)

My aim is to install Cyanogenmod 7.1.

So far I started off by trying to flash it with XWKDD Insecure, which I believe is wrong? However after rooting it, I installed ClockworkMod Recovery, downloaded the ROM and tried installing it - which is where the problem started - I kept getting the error in recovery mode 'Invalid whole-file signature'.

It just wouldn't boot in to ClockworkMod Recovery.

So after some digging around I managed to find a file to flash to my device for the CWM Recovery mode, tried it, and it worked. However, I still couldn't install Cyanogenmod from my SDcard.

I tried it a few times, wiped/formatted a few times and ended up getting my device stuck in a bootloop.

So, I've managed to get it out of the boot loop, and started fresh...

I flashed it with XWKH4 Insecure, unrooted, rerooted etc.
I've downloaded CWM again, downloaded the Cyanogenmod again, tried installing it, and once again it's gone back into Androids recovery and failed to install because of the 'whole-file signature' and failing to verify it.

I did post this in Q&A as well, however it doesn't seem to be as popular a forum as this one, I'm not really looking to wait for days for a response.

View 9 Replies View Related

General :: Can't Boot Spice Mi 270 After Recovery

Jul 3, 2012

I rooted my phone using Z4 then used Titanium Backup for backing up and then recovery. Now while rebooting into recovery mode the phone took a long time in booting so I removed the battery and tried to reboot. But the phone makes the signature sound and after that only displays the following word 'spice'.

View 2 Replies View Related

General :: Can't Boot Into Recovery After Flashing A Rom

Oct 15, 2012

I flashed Omega rom today for my galaxy note 2. It uses Aroma installer which i think could be the problem. Basically I cant boot into recovery. The rom is also very laggy where people on its development thread are praising it stability! The device will stay on the 'Samsung galaxy note II gt17100' bootscreen when i try to.boot into recovery.

View 1 Replies View Related

General :: Boot Failure Due To CWM Recovery?

Oct 17, 2013

i have a cheap alwinner a13 tablet (simmtronics xpad x720) from indian manufacturer. It is stuck at cwm recovery it countineously boots to cwm after restart.I have no backup stock rom. But i can sideload zip from adb or external ed. And not able to mount internal sd or wipe cache.

View 5 Replies View Related

General :: Phone Won't Boot Not Even Into Recovery?

Mar 10, 2013

I just tried to install an custom rom at my Android, i unlocked it on HTCdev`s site, but i think i was a little fast with the DooMLoRD_v2_ROOT-zergRush-busybox-su.zip

I then bootet the phone into fastboot, and did the command fastboot flash boot boot.img, this worked very fine but now the phone wont boot.

I think maybe the phone is unlocked, but it is S-ON. I have tried diffrent recovery modes with the fastboot flash recovery recovery.img etc, but none of them are working.

Now im sitting with a phone that wont boot at all, what to do?

Is it possible to keep going on with the custom rom install, or can i resett the phone into the stock rom?

View 3 Replies View Related

General :: New Phone Cannot Boot After Titanium Backup

Jan 2, 2014

I have a new quad-core phone with android 4.2.1, that is now useless. It can not boot, it freeze at second bootlogo, before animation.It is rooted, and i have made some changes to build.prop. It worked fine, but after some time i realized the gallery and camera app was gone.

Then i did following:

Installed updated standard gallery+camera apk found online, both in the same app. from here [URL] Works great, but i wanted to make it a system app, so did that with titanium backup.After that, the camera app is gone. Gallery app is still working.So i tried to change it back to user app, again with titanium, but did not stop working. After some time i took out the battery.Now it freeze before boot animation.

I tried "wipe data/factory reset" and "wipe cache partition", in system recovery but still not booting!

I tried to backup user data from another phone, same model, and restore on this one but says "Error: checksum compare fail".


Do i need to flash a new rom to the phone with my pc? I have not tried this before, and i want to keep stock rom.I have read this page:

[URL]

But i can not get it in download mode, with those hotkeys?

i have access to other working phones of the same model.

View 9 Replies View Related

General :: Boot Loop With No Recovery Mode

May 14, 2013

I have an Android tablet (Diablotek D2-721, very cheap I know, but it serves its purpose) that is stuck in a boot loop. The real problem here is that this device apparently does not have any sort of recovery mode and being in a boot loop means it does not get recognized by ADB or any firmware flashing software.

I researched all day yesterday perusing forum after forum but almost every single solution requires booting into recovery.

View 1 Replies View Related

General :: EVO 3D Won't Boot Into Recovery Mode Anymore

Jun 3, 2013

My EVO 3D (Sprint) is rooted and is on android version 2.3.4 and I believe it's not an android official release, this is how it was given to me. I'm trying to install CM10.1

I installed ClockworkMod 5.0.2.0 using ROM Manager and since then I haven't been able to boot into recovery mode. I can get into bootloader but not recovery. I've tried powering it on with the volume button down, using the recovery reboot option, and tried using "Reboot into Recovery" in ROM Manager, but I keep seeing the same thing. It boots with the HTC logo then goes black then at this point i believe I should be seeing recovery mode but instead I see the HTC logo again and then it just boots like normal. Is there something I did wrong and is there a way to get recovery to work again?

View 2 Replies View Related

General :: Cannot Find Boot / Recovery Partition

Nov 22, 2012

I got the cat /proc/mounts here -

Code:
root@android:/ # cat /proc/mounts
cat /proc/mounts
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0

[code].....

View 6 Replies View Related

General :: Device Not Booting Neither Can Boot Into Recovery

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..

View 9 Replies View Related

General :: Flashing Any Rom Is Successful But Gives No Boot Or Recovery

Jan 14, 2014

My Samsung Note 10.1(N8000) got stuck on boot screen at stock. No recovery only download mode. I don't know why, it was flat for about 2 weeks before I noticed.

Roms always and still flash successfully if I get the right version of odin, i think i have about 15 different odins from trying to fix this.

Things I've tried:

1.Flash stock rom
2.Flash custom recovery
3.Flash different versions of both 7+
4.Re-partition and repeat 1-3
5.Wipe the memory and repeat 4 with many many roms

why my tablet stopped the first time and why no roms are working to recover it. What is happening here? Is it corrupt memory or motherboard etc hardware? Is there a god .pit file or god rom that could work to make something happen? What should i try now?

This shows a successful flash which had no effect on the tablet afterwards

[URL]

View 1 Replies View Related

General :: Unable To Boot LG Optimus G Into Recovery

Mar 28, 2014

I'm having trouble booting my LG Optimus G into recovery mode. I've rooted the phone and installed ClockworkMod recovery. When I try to boot into recovery, either from the ROMmanager app or by holding Volume Up and Power, it comes up with the LG logo and gives this error: Secure Booting Error! Cause: boot certification verify. It just stays like that until I press and hold the power button again until the phone shuts off entirely. Then I'm able to boot into the stock operating system and the phone works fine, but I can never get it to boot into recovery.

The error I mentioned above seems to be a well documented error on the internet, but it seems like other people that are having the trouble are completely bricking their phones. Mine is able to come out of it. All the solutions I'm finding pertain to a phone that's completely bricked and involve taking the phone back to stock. My phone works fine with the stock ROM, but I'd like to play with some custom ROM's.

View 2 Replies View Related

General :: How To Boot To Recovery Without Home Button

Feb 3, 2014

My home button was broken.I can boot to Download mode via JIG USB only. When my phone bootloop.One way to fix it ,is flash a new ROM using Odin Have other way?

View 1 Replies View Related

General :: HTC One X / CM9 - Recovery Skips Straight To Boot

Jul 8, 2012

I have an htc one x. I recently flashed the cm9 rom and im not to keen on it so i know want to return to my old standard one.

When i go into recovery to try and restore my old rom it doesnt let me the phone just restarts and boots into the cm9 rom and not clockwork recovery. I think it would be a good idea to wipe the rom and clear my cache but i cant as i cant go onto cwm.

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved