[Android Q&A, Help & Troubleshooting] MuhammadZul:
Hi,

Im new to this forum (well, not 100% new i usually look for useful guides and apps in XDA) i have a problems with my device (Lenovo A6000) not just one but many and resulting in this.

In june, my phone seems to be so slow and there is no sound (notification,media etc) and my sim card is not detected eventhough i inserted it (i have two sim and neither of those is detected). so i tried to turn on and turn off the device several time, but only thing i got is after the logo on reboot, its just blank screen with some screen brightness or light

so i decided to look XDA about the problem and i decide to Flash new ROM, i search many of Stock nor Costum Rom and neither of those work (im on KitKat). eventually i found the one, an upgrade to Lollipop and its working the only rom i tried that work for me. this time because i get stuck in the logo, i also install TWRP for Lenovo A6000 by SevenMaks and seems to be very useful ahead.

for some weeks, its working just fine until one day i decide to turn off my phone because its laggy and slow, i turned off my phone and tried to turn it on again but surprisingly i got the same problem, but this time the phone is succesfully turned on after a very long time to boot (30 minutes to boot) but the sim card is not detected again like the last time, so i decided to used the same steps (Wipe data and Cache, flash rom, reboot) and voila its working again but i lost my data of course, this event happened everytime i turn off my phone, like 5 times in one months i must flash rom everytime i turned off (but the 2nd time i tried to backup data and restore so i dont lost any data) so i decided to NEVER turn off my phone in any circumstances.

until last night, i have new problem is the Bluetooth isn't working, i cant turn it on the bluetooth. because its very important to i to use bluetooth, i turn off my phone (but this time i reboot so hopefully didn't get the same result) but no, the problem is still the same i cant turn it on again (logo appears, after logo i just got the blank screen with screen brightness light) so i think this is the same i just have to backup, wipe, re-flash rom, restore but no, when i go to the TWRP, it take more time to boot to TWRP so i think there is something not right, and after i get to the twrp, twrp ask me too "Unmodified Partitions detected" "TWRP detect unmodified system partition" so i think its just a small problem because i haven't partition my SD Card into 3 partition.

i tried to backup data but the only thing i got is TWRP log:

E: Could not mount /data and unable to find crypto footer.
E: Unable to mount data
Updating artition details...
E: Unable to mount "/system"
E: Unable to mount "/cache"
E: Unable to mount "/data"
....done
[B]E: Unable to mount storage.[/B]

i get that in the Log and after the MD5 Generation the Backup was complete but Failed (there is the backup folder in the restore menu) i tried to backup again but without the data checked only Boot (32mb) and System (923mb). last time i checked the Data it says (0mb) and i look over the storage it says Internal Storage (0mb) and External Storage (2350mb) so i think something is wrong and i cant recognize what the problem is, usually i know what is wrong because i recognized it and have the solution,but this time i dont understand.

I also tried to wipe everything (except external because the external doesnt matter) and Flash the ROM but i got the same log and same result if i boot the phone (but this time it says no OS installed! and i just get stock on Logo and cant get to the stock bootloader).

right now im looking for the unable to mount solution

with all thank you, can anyone have the solution to this? and explain it to me how to solve it? thank you :good: