Raspberry PI SD card backup

Get drives info:

fdisk -l

Create backup:

dd bs=4M if=/dev/sdb | pv | gzip > /home/musuk/raspberry/1.gz

• /dev/sdb — path for sd card device.
• dd — tool to read/write stream from device.
• bs=4M — read buffer size.
• pv — tool to show read status.

Restore backup:

gzip -dc /home/musuk/raspberry/1.gz | pv | dd bs=4M of=/dev/sdb

• gzip -dc — decompress parameter.