mount raspian for local dev intead of rsyn rpi

fdiskraspbiansh

> fdisk -l raspbian.img


	Disk raspbian.img: 1,7 GiB, 1854418944 bytes, 3621912 sectors
	Units: sectors of 1 * 512 = 512 bytes
	Sector size (logical/physical): 512 bytes / 512 bytes
	I/O size (minimum/optimal): 512 bytes / 512 bytes
	Disklabel type: dos
	Disk identifier: 0xee397c53


....
Device                                Boot Start     End Sectors  Size Id Type
raspbian.img1       8192   93813   85622 41,8M  c W95 FAT32 (LBA)
raspbian.img2      94208 3621911 3527704  1,7G 83 Linux


Sector size: 512
start block: img1: 8192 and img2: 122880

mkdir -p /home/${USER}/dev/rootFS 
mkdir -p /home/${USER}/dev/boot 

mount raspbian.img -o loop,offset=$(( 512 * 8192)) /home/${USER}/dev/boot
mount raspbian.img -o loop,offset=$(( 512 * 94208)) /home/${USER}/dev/rootFS
      sudo mount -v -o offset=$((512*94208)) -t ext4 raspbian.img /home/${USER}/dev/rootFS
	  
comment in /home/${USER}/dev/rootFS/etc/fstab. qemu use /dev/sda not  /dev/mmcblk0p* as sdcard
	#/dev/mmcblk0p1 /boot vfat defaults 0 2
	#/dev/mmcblk0p2 / ext4 errors=remount-ro,noatime,nodiratime,commit=120 0 1