Copying Current Image on BBB on Windows PC

Hello all,

I just bought a BBB and want to take a back-up of the current image but have few questions regarding to that:

  1. I bought a 8gb SD card, wrote the image and extended the partition as primary. I have not done anything to copy SD card image to eMMC, so am I working on SD card only? I mean like for example: I installed OpenCV library, and some other programs, are they located inside the SD card or on eMMC? If I take only back up of what is inside SD card, is it enough? (A little explanation about filesystem opeartion would be fantastic!)

  2. a) If taking back up of SD card is enough, how can I do it on Windows? I searched for that but could not find anything regarding to that issue. Could you please help me?
    b) If it is not enough, what should I do take back up of everything currently available on my BBB?

Best,
Frank

On Wed, 20 Jan 2016 02:02:21 -0800 (PST), frank brewer
<frankthebrewer@gmail.com> declaimed the
following:

1) I bought a 8gb SD card, wrote the image and extended the partition as

  So first question is: What application did you use to write the card
image? That likely will come back in your #2

primary. I have not done anything to copy SD card image to eMMC, so am I
working on SD card only? I mean like for example: I installed OpenCV
library, and some other programs, are they located inside the SD card or on
eMMC? If I take only back up of what is inside SD card, is it enough? (A
little explanation about filesystem opeartion would be fantastic!)

  If you are booting off the uSD card, the odds are good that the eMMC is
not even being mounted. Compare the following two boots (first eMMC, second
uSD image)

boot from on-board memory (unfortunately it wraps badly)

Last login: Wed Jan 20 09:00:50 2016 from 192.168.7.1
debian@beaglebone:~$ df
Filesystem 1K-blocks Used
Available Use% Mounted on
rootfs 3610232 2107536
1315972 62% /
udev 10240 0
10240 0% /dev
tmpfs 101668 552
101116 1% /run
/dev/disk/by-uuid/f2d2dc3b-816a-4c15-aadd-ed72ae054c47 3610232 2107536
1315972 62% /
tmpfs 254160 0
254160 0% /dev/shm
tmpfs 254160 0
254160 0% /sys/fs/ cgroup
tmpfs 5120 0
5120 0% /run/loc k
tmpfs 102400 0
102400 0% /run/use r
debian@beaglebone:~$ df
Filesystem 1K-blocks Used
Available Use% Mounted on
rootfs 3610232 2107536
1315972 62% /
udev 10240 0
10240 0% /dev
tmpfs 101668 552
101116 1% /run
/dev/disk/by-uuid/f2d2dc3b-816a-4c15-aadd-ed72ae054c47 3610232 2107536
1315972 62% /
tmpfs 254160 0
254160 0% /dev/shm
tmpfs 254160 0
254160 0% /sys/fs/cgroup
tmpfs 5120 0
5120 0% /run/lock
tmpfs 102400 0
102400 0% /run/user
debian@beaglebone:~$

Boot from uSD card (8GB)

Last login: Mon Dec 28 18:27:34 2015 from 192.168.2.106
debian@beaglebone:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 7476388 2059776 5077316 29% /
udev 10240 0 10240 0% /dev
tmpfs 101668 556 101112 1% /run
/dev/mmcblk0p2 7476388 2059776 5077316 29% /
tmpfs 254160 0 254160 0% /dev/shm
tmpfs 254160 0 254160 0% /sys/fs/cgroup
tmpfs 5120 0 5120 0% /run/lock
tmpfs 102400 0 102400 0% /run/user
debian@beaglebone:~$

  No eMMC mount point. No eMMC means everything has to be on the uSD
card.

(Hmmm, I need to find the command to set the uSD image to use my local
timezone; the eMMC comes up correctly -- which is odd, since I swear the
eMMC is running the same original image; I'd done the uSD, booted to
confirm, converted to flasher, rebooted, then rewrote the uSD with the same
image for stand-alone use)

2) a) If taking back up of SD card is enough, how can I do it on Windows? I
searched for that but could not find anything regarding to that issue.

  Presuming you used "Win32 Disk Imager" to write the initial SD card
image... If you look closely, the program also has a "read" button, which
should permit reading the card into a file on your computer (and from there
you should be able to duplicate it to another SD card if desired).