dd backup produces bigger image file

2

I created a disk image with dd. The hard disk capacity is 2 GB. However, the image produced a 3.8 GB file. I used:

dd if=/dev/mmcblk0 > /mnt/sd/disk0.img

(where mmcblk0 is a microSD card, with 3 partitions: 2 ext3 and 1 FAT32).

How can I test if it is done correctly?

stokastik

Posted 2013-03-04T09:14:02.547

Reputation: 21

Do you get the same result with dd if=/dev/mmcblk0 of=/mnt/sd/disk0.img? – jaume – 2013-03-04T10:18:55.033

Just to disconfuse me ;) mmcblk0 is not mounted to /mnt/sd?! – mpy – 2013-03-04T10:28:48.403

Do you mean partition by "hard disk"? http://stackoverflow.com/questions/12366515/difference-between-reading-from-dev-block-mmcblk0-and-dev-block-mmcblk0p1

– Ярослав Рахматуллин – 2013-03-05T05:37:32.660

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Asked: 2013-03-04T09:14:02.547

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Active: 2013-03-04T09:14:02.547