Difference between revisions of "Disk Images"
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| − | == Create a compressed image of a disk == | + | == Create and restore a compressed image of a disk == |
The whole disk (SD-card) is read, piped through ''gzip'' for compression and written to the ouput file ''image.gz''. | The whole disk (SD-card) is read, piped through ''gzip'' for compression and written to the ouput file ''image.gz''. | ||
<nowiki>dd if=/dev/mmcblk0 bs=1M | gzip --stdout > ./image.gz</nowiki> | <nowiki>dd if=/dev/mmcblk0 bs=1M | gzip --stdout > ./image.gz</nowiki> | ||
| + | |||
| + | Restore: | ||
| + | <nowiki>gunzip --stdout image.gz | dd of=/dev/mmcblk0 bs=1M</nowiki> | ||
| + | |||
| + | Note: | ||
| + | *both commands require root privileges | ||
| + | *be '''very careful''' to choose the right device when restoring! | ||
Latest revision as of 16:19, 20 September 2011
Create and restore a compressed image of a disk
The whole disk (SD-card) is read, piped through gzip for compression and written to the ouput file image.gz.
dd if=/dev/mmcblk0 bs=1M | gzip --stdout > ./image.gz
Restore:
gunzip --stdout image.gz | dd of=/dev/mmcblk0 bs=1M
Note:
- both commands require root privileges
- be very careful to choose the right device when restoring!
