sudo mkdir -p /mnt/runimg pi@raspberry49:~ $ sudo mount --bind /media/netdir/raspbrreyPi/mnt_runimg /mnt/runimg pi@raspberry49:~ $ ls -l /mnt/runimg/ total 85492752 -rwxrwxrwx+ 1 99 99 4555014144 Jan 7 22:32 2019-04-08-raspbian-stretch_chroot.img -rwxrwxrwx+ 1 systemd-timesync 98 3481272320 Mar 23 22:09 2019-04-08-raspbian-stretch-make-new.img -rwxrwxrwx+ 1 root root 3481272320 Dec 30 09:55 2019-04-08-raspbian-stretch-make-old.img -rwx------+ 1 99 99 3829399552 Jan 26 21:38 2019-09-26-raspbian-buster_jin.img -rw-r--r--+ 1 root root 5934940160 Apr 14 23:01 2020-02-13-raspbian-buster_jin-make.img -rw-rw-rw-+ 1 root root 31180455936 Apr 14 20:39 aarch64_bak.img -rw-rw-rw-+ 1 root root 31180455936 Apr 14 23:01 aarch64.img drwxrwxrwx+ 1 root root 160 Dec 19 22:41 bak -rw-rw-rw-+ 1 99 99 1728053248 Mar 25 22:50 readynas_compile_tool2.img -rw-rw-rw-+ 1 99 99 2173698048 Jan 8 23:25 readynas_compile_tool.img pi@raspberry49:~ $ sudo mkdir -p ~/rpi_mnt pi@raspberry49:~ $ sudo losetup -f -P --show /mnt/runimg/aarch64.img /dev/loop0 pi@raspberry49:~ $ sudo mount /dev/loop0p2 -o rw ~/rpi_mnt pi@raspberry49:~ $ cd ~/rpi_mnt pi@raspberry49:~/rpi_mnt $ sudo mount /dev/loop0p1 -o rw ~/rpi_mnt/boot/ pi@raspberry49:~/rpi_mnt $ sudo mount --bind /dev ~/rpi_mnt/dev/ pi@raspberry49:~/rpi_mnt $ sudo mount --bind /sys ~/rpi_mnt/sys/ pi@raspberry49:~/rpi_mnt $ sudo mount --bind /proc ~/rpi_mnt/proc/ pi@raspberry49:~/rpi_mnt $ sudo mount --bind /dev/pts ~/rpi_mnt/dev/pts pi@raspberry49:~/rpi_mnt $ sudo mkdir -p /media/netdir/source/raspberrypi/4-08_new_raspi pi@raspberry49:~/rpi_mnt $ sudo mkdir -p ~/rpi_mnt/mnt/compile pi@raspberry49:~/rpi_mnt $ sudo mount --bind /media/netdir/source/raspberrypi/4-08_new_raspi ~/rpi_mnt/mnt/compile pi@raspberry49:~/rpi_mnt $ cd ~/rpi_mnt pi@raspberry49:~/rpi_mnt $ sudo chroot . bin/bash root@raspberry49:/# root@raspberry49:/# ls -l total 56 lrwxrwxrwx 1 root 0 7 Apr 14 11:11 bin -> usr/bin drwxr-xr-x 3 root 0 3584 Jan 1 1970 boot drwxr-xr-x 2 root 0 4096 Apr 14 11:12 debootstrap drwxr-xr-x 17 root 0 4000 Apr 14 14:02 dev drwxr-xr-x 27 root 0 4096 Apr 14 13:43 etc drwxr-xr-x 2 root 0 4096 Feb 1 17:09 home lrwxrwxrwx 1 root 0 7 Apr 14 11:11 lib -> usr/lib drwx------ 2 root 0 16384 Apr 14 10:59 lost+found drwxr-xr-x 3 root 0 4096 Apr 14 11:41 mnt dr-xr-xr-x 173 root 0 0 Jan 1 1970 proc drwx------ 2 root 0 4096 Apr 14 13:30 root drwxr-xr-x 2 root 0 4096 Feb 1 17:09 run lrwxrwxrwx 1 root 0 8 Apr 14 11:11 sbin -> usr/sbin dr-xr-xr-x 12 root 0 0 Apr 14 13:10 sys drwxrwxrwt 2 root 0 4096 Feb 1 17:09 tmp drwxr-xr-x 9 root 0 4096 Apr 14 11:11 usr drwxr-xr-x 11 root 0 4096 Apr 14 11:11 var root@raspberry49:/# echo 00:00:00 00:00:00 root@raspberry49:/# date Tue Apr 14 14:02:21 UTC 2020 root@raspberry49:/# cd /boot root@raspberry49:/boot# root@raspberry49:/boot# ls -l total 67631 -rwxr-xr-x 1 root 0 18693 Jun 24 2019 COPYING.linux -rwxr-xr-x 1 root 0 1594 Jan 17 10:01 LICENCE.broadcom -rwxr-xr-x 1 root 0 23389 Apr 13 12:13 bcm2708-rpi-0-w.dtb -rwxr-xr-x 1 root 0 24246 Apr 13 12:13 bcm2708-rpi-b-plus.dtb -rwxr-xr-x 1 root 0 23983 Apr 13 12:13 bcm2708-rpi-b.dtb -rwxr-xr-x 1 root 0 23764 Apr 13 12:13 bcm2708-rpi-cm.dtb -rwxr-xr-x 1 root 0 24424 Apr 13 12:13 bcm2708-rpi-zero-w.dtb -rwxr-xr-x 1 root 0 23688 Apr 13 12:13 bcm2708-rpi-zero.dtb -rwxr-xr-x 1 root 0 25310 Apr 13 12:13 bcm2709-rpi-2-b.dtb -rwxr-xr-x 1 root 0 25459 Apr 13 12:13 bcm2710-rpi-2-b.dtb -rwxr-xr-x 1 root 0 27119 Apr 13 12:13 bcm2710-rpi-3-b-plus.dtb -rwxr-xr-x 1 root 0 26500 Apr 13 12:13 bcm2710-rpi-3-b.dtb -rwxr-xr-x 1 root 0 25314 Apr 13 12:13 bcm2710-rpi-cm3.dtb -rwxr-xr-x 1 root 0 40835 Apr 13 12:13 bcm2711-rpi-4-b.dtb -rwxr-xr-x 1 root 0 52360 Apr 13 12:13 bootcode.bin -rwxr-xr-x 1 root 0 166 Jan 1 1980 cmdline.txt -rwxr-xr-x 1 root 0 1849 Apr 13 12:21 config.txt -rwxr-xr-x 1 root 0 6746 Apr 13 12:13 fixup.dat -rwxr-xr-x 1 root 0 6229 Apr 13 12:13 fixup4.dat -rwxr-xr-x 1 root 0 3151 Apr 13 12:13 fixup4cd.dat -rwxr-xr-x 1 root 0 9215 Apr 13 12:13 fixup4db.dat -rwxr-xr-x 1 root 0 9217 Apr 13 12:13 fixup4x.dat -rwxr-xr-x 1 root 0 2663 Apr 13 12:13 fixup_cd.dat -rwxr-xr-x 1 root 0 9820 Apr 13 12:13 fixup_db.dat -rwxr-xr-x 1 root 0 9820 Apr 13 12:13 fixup_x.dat -rwxr-xr-x 1 root 0 14400926 Apr 11 00:44 initrd.gz -rwxr-xr-x 1 root 0 145 Feb 13 16:16 issue.txt -rwxr-xr-x 1 root 0 5157928 Apr 13 12:13 kernel.img -rwxr-xr-x 1 root 0 5467128 Apr 13 12:13 kernel7.img -rwxr-xr-x 1 root 0 5800336 Apr 13 12:13 kernel7l.img -rwxr-xr-x 1 root 0 13945344 Apr 13 12:13 kernel8.img drwxr-xr-x 2 root 0 16896 Apr 13 12:13 overlays -rwxr-xr-x 1 root 0 2884708 Apr 13 12:13 start.elf -rwxr-xr-x 1 root 0 2802752 Apr 13 12:13 start4.elf -rwxr-xr-x 1 root 0 798236 Apr 13 12:13 start4cd.elf -rwxr-xr-x 1 root 0 4608100 Apr 13 12:13 start4db.elf -rwxr-xr-x 1 root 0 3560804 Apr 13 12:13 start4x.elf -rwxr-xr-x 1 root 0 694052 Apr 13 12:13 start_cd.elf -rwxr-xr-x 1 root 0 4861256 Apr 13 12:13 start_db.elf -rwxr-xr-x 1 root 0 3798920 Apr 13 12:13 start_x.elf root@raspberry49:/boot# root@raspberry49:/boot# cat cmdline.txt console=serial0,115200 console=tty1 root=PARTUUID=ea7d04d6-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles root@raspberry49:/boot# root@raspberry49:/boot# root@raspberry49:/boot# compile finish bash: compile: command not found root@raspberry49:/boot# exit exit pi@raspberry49:~/rpi_mnt $ cd pi@raspberry49:~ $ sudo umount ~/rpi_mnt/mnt/compile pi@raspberry49:~ $ sudo umount ~/rpi_mnt/dev/pts pi@raspberry49:~ $ sudo umount ~/rpi_mnt/proc pi@raspberry49:~ $ sudo umount ~/rpi_mnt/sys pi@raspberry49:~ $ sudo umount ~/rpi_mnt/dev pi@raspberry49:~ $ sudo umount ~/rpi_mnt/boot pi@raspberry49:~ $ sudo umount ~/rpi_mnt pi@raspberry49:~ $ sudo losetup -d /dev/loop0 pi@raspberry49:~ $ sudo umount /mnt/runimg pi@raspberry49:~ $