I have taken the backup of my mobile boot image...
I extracted the bootimage and modified the fstab.qcom file which is in ramdisk.gz and repack the boot image....
After repack i flashed my image using dd command to the emmc. flash is successful but mu mobile is not booting and it is going to fastboot mode.
If unpack and pack with out any changes my mobile is booting fine...
Could you please let me know what could be the cause, why it is not booting after modification.
Is there any possibility to stop checking the CRC of the boot image.