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      Current state of vpsBoard   02/04/2017

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drmike

Cloning SD Card for ARM device

4 posts in this topic

About to monkey with a custom bootable SD card for an ARM device.  Got ahold of such part of a gear purchase... The normal dance moves to get this going are more time and patience than I have to spare.

 

Since I am prone to trying stuff and blowing things away, would like to preserve the original SD card image and copy it back or to other SD cards when doing reinstall.

 

Any recommend best process / tool for this?  Want to make complete replica of the SD card.  It's a bootable SD card with the OS.

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Assuming the sd card appears as /dev/sdb when you plug it in your PC, you can do:

 

dd if=/dev/sdb of=sdcard-backup.img bs=1M

 

and to write it back to the SD card:

 

dd if=sdcard-backup.img of=/dev/sdb bs=1M

 

Of course you should check what device it is first, you don't want to start dd-ing some hard disk.

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Assuming the sd card appears as /dev/sdb when you plug it in your PC, you can do:

 

dd if=/dev/sdb of=sdcard-backup.img bs=1M

 

and to write it back to the SD card:

 

dd if=sdcard-backup.img of=/dev/sdb bs=1M

 

Of course you should check what device it is first, you don't want to start dd-ing some hard disk.

 

Interesting approach.   My first merry go round on this since I always use standard prebuilt stuff that is a download away.   This whole custom built image thing has been frightened that I'll modify something, wipe the OS and image will be fubared..  Cause that's how things work the first couple of times ;)

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"DD can be used for something besides running sequential write benchmarks??"

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