I know that a previous post of mine talks about the infamous eMMC problem where the chip will burn out, however looking over some of my notes on eMMC chip problems I did come across a couple of things I noted in regards to possibly finding a solution to a couple of the issues.

 

Now the usual way we know we have an eMMC problem is that we get:

 

E:Can’t mount /cache/recovery/command

E:Can’t mount /cache/recovery/log

E:Can’t open /cache/recovery/log

E:Can’t mount /cache/recovery/last_log

E:Can’t open /cache/recovery/last_log

 

appearing as a debug message, this is actually the full “cache” partition being corrupted. Obviously the majority of rom chefs have run into this problem many times and myself included I have seen that message on more than one occasion over different handsets.

 

Usually there isn’t a fix for any error like that, once the cache partition is corrupted you really cannot recover from that, it is a catastrophic failure. The only way I have been able to fix this a couple of times and that was by immediately removing the battery and letting it sit for a couple of minutes before putting the battery back in.

Then if you boot directly into the boot loader and hit into recovery mode.

Now if you haven’t received any major errors you cahce partition should now be formatted as ext3, so if you cycle through the menus and format it to ext4.

Do a full wipe of everything, including factory reset, davlik cache and battery stats

Flash the rom of your choice again (now make sure it is the correct rom for the phone) and hope for the best that it works.

 

Now hopefully that potentially can resolve your problems, if not then you will probably have a serious eMMC problem and potentially will have bricked your phone.

 

I will say this method has worked 9 out of 10 times with me and I still have these notes saved for the next time it occurs.

 

Key things to remember, always track changes in the rom – see if there is a good user base and check them against other more popular roms to see the differences and benefits if there are any.