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Extremely Amateur Question About JRO3L ROM And Flashing ROMS In General

Discussion in 'Samsung Galaxy Nexus' started by n8sco, Aug 10, 2012.

  1. n8sco
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    n8sco New Member

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    I finally decided to be brave and unlock, root and flash my first ROM yesterday because I was tired of waiting for OTA Jellybean. More by luck than judgement I got the JRO03L mmuzzy ROM from XDA to flash despite not knowing what the heck I was doing. Initially it hung at the boot screen and then I cleared the cache, davlik cache and did a system wipe. It took about 3 minutes to boot and works like a dream It's faster, more responsive, has a better battery life and of course Google Now and the new assistant so I want to keep it. The problem I'm having which maybe isn't even a problem is that when I turn my phone off and turn it back on it hangs on the Google screen with the (unlocked) lock. I was able to boot into clockwork, back up everything and re-flash (although now I don't remember if I restored the backup or installed from SD card again, I just know my apps and everything I had set up were there when it booted.) but I'm terrified to turn the phone off again. I generally don't turn my phone off but I'm concerned that if it reboots randomly or it accidentally turns off in my pocket that I won't be able to turn it back on if I need to. Can anyone tell me what I may have done wrong or what I should be doing to make sure that I won't get stuck on the screen? Any help would be hugely appreciated. And if the solution is a really simple one, please excuse my ignorance, I know absolutely nothing about how flashing roms works and it was a minor miracle that I was even able to get it up and running yesterday.
  2. pool_shark
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    pool_shark Active Member

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    It is said that when JB boots if it detects a problem it rubs a file system check like fsck in other Unix platforms.
    That can take a while.

    I don't know how long you waited but it can take up to 10 minutes sometimes.
  3. n8sco
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    n8sco New Member

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    Thanks for the response. I probably didn't wait ten minutes but I would say it was a good 7 or 8 minutes where it was stuck on the google screen. It booted considerably faster after I backed it up and re-flashed it. To that point I had not made a backup of anything so maybe that had something to do with it. I'm completely new to flashing roms so I'm a little in the dark as to when I should be concerned and when I shouldn't.
  4. Scimino
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    Scimino New Member

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    Yeah just wait it out if it hangs on the Google logo. One thing you could try is going on to droidmodderx.com and he has a jelly bean boot loader image u can flash. It helped with my gnex. I give droidmodderx a lot of props, every time I had a issue I found a fix on his website. Just flash the image after u flash a jb ROM. Somebody correct me if I am wrong.
  5. n8sco
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    n8sco New Member

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    Ok cool, thank you. I'll look into it. Yeah the ROM runs perfectly it's just this one small issue. I'll definitely check the image out though because I can't go back to ICS now that I've experience JB.
  6. cupfulloflol
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    cupfulloflol New Member

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    Yeah this is an error checking thing that is implemented in JB. If it senses an error, or possibility of an error it will take a bit to boot up. For example, if you battery pull, your chances of a long bootup are increased since you didn't shutdown properly.

    There are numerous "fixes" ; installing the JB bootloader, don't use *insert recovery here*, use *insert ROM here*, put a boot animation in /data/local, reboot into recovery first then boot into OS from it, and many others. None of them have a 100% success rate, which is why I put fixes in quotes. Most of these make zero sense to me, but whatever works for folks.

    Personally if I were plagued by long boot times, I would boot into recovery and run e2fsck (file system check) via adb on the data partition and see what it says. ( e2fsck(8): check ext2/ext3/ext4 file system - Linux man page ) Alternatively, I would be contemplating a complete wipe of my device. In your situation though, since you recently unlocked you are starting with a clean slate.
  7. n8sco
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    n8sco New Member

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    Thank you for your response. Yeah it's going to be a learning process. I will have to try a few different things and see if it makes a difference. Since I don't have work today I'll do a bit of experimenting and see if I can find a solution. I appreciate everyone's help and suggestions.
  8. n8sco
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    n8sco New Member

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    It ended up just being as simple as giving it some time to boot. I turned it off and it took about 3 minutes to boot today. Not ideal but certainly something I can live with to keep this great rom. Thanks for the feedback guys.
  9. mmuzzy
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    mmuzzy New Member

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    Thanks for the kind words. I'm glad it worked out so well for you. Give me a shout if I can help with anything. I check the XDA thread more than anything but I try to watch as many sites as I can. Lots to learn from these guys. :)
  10. n8sco
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    n8sco New Member

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    You're welcome. I'm really enjoying it. I'll probably join XDA because I'd really like to learn how to do some of the awesome stuff you guys do. Keep up the good work!
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