Difference between revisions of "Linux command: dd"
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== Create compressed image == | == Create compressed image == | ||
sudo dd if=/dev/sda conv=sync,noerror bs=64K | gzip -c > /PATH/TO/DRIVE/backup_image.img.gz | sudo dd if=/dev/sda conv=sync,noerror bs=64K | gzip -c > /PATH/TO/DRIVE/backup_image.img.gz | ||
| + | == Restore compressed image == | ||
| + | gunzip -c /PATH/TO/DRIVE/backup_image.img.gz | dd of=/dev/sda | ||
Latest revision as of 12:16, 27 February 2019
dd[edit]
It's used to manage images (create / dump)
To dump an image to a device (WARNING, IF YOU ENTER THE WRONG DEVICE IT WILL BE OVERRITEN)
dd bs=4M if="/home/linux/2013-02-09-wheezy-raspbian.img" of=/dev/mmcblk0
To create an image from a CD:
dd if=/dev/cdrom of=/tmp/cdimg1.iso
(*) Note: The cdrom must not be mounted.
You can check the image with md5sum.
To see progres:
dd status=progress if=/dev/cdrom of=/tmp/cdimg1.iso
Create compressed image[edit]
sudo dd if=/dev/sda conv=sync,noerror bs=64K | gzip -c > /PATH/TO/DRIVE/backup_image.img.gz
Restore compressed image[edit]
gunzip -c /PATH/TO/DRIVE/backup_image.img.gz | dd of=/dev/sda