chris_c
Member
- Joined
 - Jun 25, 2010
 
- Messages
 - 393
 
- Age
 - 57
 
my initial kneejerk reaction to backing up my boot SD card was to use dd - obviously when backing up an OS image you have device nodes and all sorts of other considerations...
A quick trip to wolfram alpha confirmed that at even at theoretical speeds this would take a looooong time!
obviously you don't want to be copying blank sectors !
enter partclone (http://partclone.org/) which intelligently copies only used sectors
I only compiled ext* support however it compiled cleanly using only libs from the official ubuntu repo.
In a real use scenario it backed up my 8gb class 6 SD card with only 2.4GB used in a little under 10 minutes from a usb sd card reader - nice - job done!
				
			A quick trip to wolfram alpha confirmed that at even at theoretical speeds this would take a looooong time!
obviously you don't want to be copying blank sectors !
enter partclone (http://partclone.org/) which intelligently copies only used sectors
I only compiled ext* support however it compiled cleanly using only libs from the official ubuntu repo.
In a real use scenario it backed up my 8gb class 6 SD card with only 2.4GB used in a little under 10 minutes from a usb sd card reader - nice - job done!
	