Cannot boot?!

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Cannot boot?!

Postby konker » Mon Apr 07, 2014 10:23 am

I'm running NexusHD2-KitKat-CM11.0 V4.3 on my HTC HD2 1024Mb phone.
The phone has been running fine for the past 1+ month since I flashed it with this ROM.
All this while, I've been swopping out depleted battery with freshly charged battery because my USB port is a little loose & makes charing difficult.
Last night, after shutting down the phone completely and replacing the battery, I could not get it to boot properly to the home screen.
It would stay indefinitely on the cyanogenmod logo screen with the spinning arrow.
I left it in that state for more than 30 mins and no difference.
I've also tried formating cache partition and that did not work.
What else can I do besides rebuilding the phone from scratch?
I've a 1 week old Titanium backup & just created a CWM backup from within recovery.
Appreciate any help & advise to get this work back to working order again.
Thanks!

Konker
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Re: Cannot boot?!

Postby soren » Thu Apr 10, 2014 5:27 pm

Remove the battery and turn it on and repeat until the home screen appears.
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Re: Cannot boot?!

Postby tudau » Fri Apr 11, 2014 4:35 am

konker wrote:I'm running NexusHD2-KitKat-CM11.0 V4.3 on my HTC HD2 1024Mb phone.
The phone has been running fine for the past 1+ month since I flashed it with this ROM.
All this while, I've been swopping out depleted battery with freshly charged battery because my USB port is a little loose & makes charing difficult.
Last night, after shutting down the phone completely and replacing the battery, I could not get it to boot properly to the home screen.
It would stay indefinitely on the cyanogenmod logo screen with the spinning arrow.
I left it in that state for more than 30 mins and no difference.
I've also tried formating cache partition and that did not work.
What else can I do besides rebuilding the phone from scratch?
I've a 1 week old Titanium backup & just created a CWM backup from within recovery.
Appreciate any help & advise to get this work back to working order again.
Thanks!

Konker
don't use titanium backup, u can use cwm recovery backup from dev tytung..

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Re: Cannot boot?!

Postby konker » Fri Apr 11, 2014 11:43 am

soren wrote:Remove the battery and turn it on and repeat until the home screen appears.

Thanks for your advise.
I've already done that many times and it was not getting anywhere.
I eventually figured out that it could be caused by bad blocks in the NAND.
There are a few error output from the installation log.
Code: Select all
Formatting /cache...
mtd: erase failure at 0x02140000
Done.
Formatting /data...
mtd: erase failure at 0x03ba0000
mtd: erase failure at 0x05480000
mtd: not erasing bad block at 0x09be0000
mtd: not erasing bad block at 0x09c20000
Done.

I decided since most of the bad blocks are in the /data region, I went ahead and rebuilt my HD2 using /data in EXT4 in the SD-EXT.
Phone is up & running & is working well so far.
And I was able to upgrade to v4.4 too.

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Re: Cannot boot?!

Postby konker » Fri Apr 11, 2014 11:47 am

tudau wrote:don't use titanium backup, u can use cwm recovery backup from dev tytung..

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Thanks.
Why are your recommending against using Titanium Backup?
I've been using that for all my rooted Android devices & it has saved me on numerous occassion.
I've also used CWM Recovery backup from time to time except that this time, the backup was performed after I ran into that issue not before, so I think the backup is unreliable at best.
After rebuilding my HD2 with /data in EXT4 in SD-EXT, I backup up my phone with CWMR after using my Titanium Backup to restore all the apps & data.

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Re: Cannot boot?!

Postby soren » Fri Apr 11, 2014 7:13 pm

To prevent this problem from occurring again in the future, I recommend that you resize your system partition to 400 MB.
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Re: Cannot boot?!

Postby konker » Sat Apr 12, 2014 4:55 am

soren wrote:To prevent this problem from occurring again in the future, I recommend that you resize your system partition to 400 MB.

I've already done that as a precaution.
Even though the log did not indicate any bad block error in the /system partition, which was 280Mb, I went ahead to repartition it to 445Mb using HD2 Toolkit before reinstalling the ROM in it's current setup.
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Re: Cannot boot?!

Postby tudau » Sat Apr 12, 2014 10:55 am

konker wrote:I've already done that as a precaution.
Even though the log did not indicate any bad block error in the /system partition, which was 280Mb, I went ahead to repartition it to 445Mb using HD2 Toolkit before reinstalling the ROM in it's current setup.
just use 300mb enough..

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