[Solved] Clone SD card with correct size

[tinue]

I can easily clone an SD card to a file with "dd" on my Mac. I can also add "count" to limit the number of sectors that are read from the SD card.

What I can't figure out is how to find the exact number of sectors that I have to read, in order to back up the entire file system, but not more. How do you create the image file that is being distributed?

[tschinz]

[tinue]

I have some SD card images downloaded to my disk: Runeaudio, Raspbian, Cupcade, Hifiberry Testimage, OpenElec, ...

None of these images seem to have the exact size of an SD card, be it 2, 4 or 8GB. So I wonder how all of these images have been made. A simple "dd" from the SD card would result in a dump of exactly card size.

Also it looks like the images are from the entire card, and nor just from one partition: When the image file is "dd"ed back to an SD card, it usually results in more than one partition.

It does look like there are additional tricks available

[hamdi]

you can use Disk Utility is the best way to cone the SD card with correct size

[tinue]

The MacOS Disk Utility? It does not know about the ext3 filesystem, and thus can't tell me anything about the partition.
The attached picture is from a Raspbian SD card, but Runeaudio also uses ext3, so I don't think it looks much different there.

Or am I misunderstanding you?

Thanks! Martin

Bildschirmfoto 2015-05-02 um 21.08.58.png (62.11 KiB) Viewed 4156 times

[hondagx35]

[tinue]

Hello Frank

Thank you very much for the link. This is exactly the information that I was looking for.

Regards, Martin

[preetyjess01]

Hey Buddy,

Look this, . Here is, you get the best solutions about the SD card clone. I also had similar problem regarding how to clone a raspberry pi sd card, but after this, I solved my all problems. You should to try this once. surely you get best solution from this. And it helps you a lot. I tried this. Thanks.