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How to backup the system image of my sdcard?


DavidJS
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I have built my armbian system on a Renegade board, and I need to back up the entire system so that I can copy it to other sdcards. I tried to use Win32DiskImager.exe to read out the system, but the size of the image read out is much larger than the space occupied by the system, which is basically equal to the size of the card. Any good suggestions?

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Armbian Linux community supported weekly builds download

On Windows and I'm not sure if there is a good method, but you can always compress the image.  This will not help if you want to fit it on a smaller sd card.
On Linux you can resize the image to a smaller image by removing unused space, and it can then be expanded to fit the size of your sd card. This is an old tutorial but it works:  https://web.archive.org/web/20200602173912/https://softwarebakery.com/shrinking-images-on-linux

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The Armbian images shrink the filesystem down to a minimal footprint that then expand to the max of the sdcard on first boot.     You're cloning the image after it's been expanded from first boot stage

 

You'll want to shrink the root file system and the partition before imagine.

 

 Rather than making a golden image, using the Armbian build tool and the customize image hooks to install your packages would be a more appropriate solution 

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