Hi, Thanks to all of you and sorry for the delayed response. I have addressed this problem. Using `kpartx` instead of `losetup` to mount partition and I finally make a bootable disk image. The explanation of this problem together with the solution is here: http://lists.gnu.org/archive/html/help-grub/2017-07/msg00017.html Thanks for your help and I hope this will help people who encounter the same error. Regards, Hao Lee _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
