Forum Thread

create image from SD card?

slapshot136 6,393 1,756 August 8, 2012 at 12:28 PM
I would like to create a backup of a SD card image, is there any program that will allow me to do that from within windows (without needing to reboot?), and then also allow me to restore that same image to another SD card (of the same size)?

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#2
not quite sure what you mean by image, you could use windows backup/restore also create an iso
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#3
you could always use dd in cygwin
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#4
Quote from komondor View Post :
not quite sure what you mean by image, you could use windows backup/restore also create an iso
I dislike windows backup&restore because it won't just give me a file, it needs an entire drive (I can't even choose a folder for it to use)

an iso would be preferable, what would be able to do that, and then write the iso onto a SD card as well?
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#5
Well you can choose the files to backup actually it is pretty simple in windows
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#6
Quote from komondor View Post :
Well you can choose the files to backup actually it is pretty simple in windows
my issue is with where it saves the files, not what it saves, and it normally only sees 1 partition from the SD card in the first place (it's a bootable linux image with 3 partitions)
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#8
HxD Hex Editor [mh-nexus.de]
after it's running, go to Extra -> Open Disk, after chose disk, -> (go back to)File choose save as, that's the image.

use physdiskwrite [m0n0.ch] to write

download the one with GUI(graphic user interface)
it's Germany interface, but don't worry, it only have one option, that's to write, the word "?ffnen" means open, choose the image, then begin write.

i been used it, if the image is 1gb, wrote to 2gb card, the 2gb card won't became 1gb, the extra 1gb still usable, after wrote the image.
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Last edited by Left4Deal August 8, 2012 at 03:41 PM

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#9
Another vote for dd - it doesn't get any easier, and it goes both ways
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#10
Quote from BoscoBearbank View Post :
Another vote for dd - it doesn't get any easier, and it goes both ways
OK, so I installed cygwin, with ddrescue, how do I use it?
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#11
Quote from slapshot136 View Post :
OK, so I installed cygwin, with ddrescue, how do I use it?
with the SD card attached, open up a bash shell and run:

$ cat /proc/partitions

This will tell you what partitions you have

For example:
sda will be an entire disk
sda1 will be the first partition on the first disk
sda2 will be the second partition on the first disk
sdb will be another entire disk
etc

When you work out what disk you want to dd, run this:

$ dd if=/dev/sdX of=/cygdrive/c/myiso.iso bs=1024k
if = input file (everything in unix/linux is a file)
of = output file (i.e. your iso)
bs = block size of chunks to copy

Let it chug away for a while and you'll get a little report at the end (I chose 1024k blocks so it will be easy to see if the sizes matches up)

ddrescue is really for recovery - you just need dd. If you your SD card has errors then use the --noerror option
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#12
If you want a GUI try one or more of the free programs I linked to earlier.
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#13
WinImage should manage it. Pretty sure it is what I used to make a bootable SD image for my nook.
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#14
I managed with the DD, thanks - it was recommended twice, so I tried it first
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