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Bootable Linux USB stick: Difference between revisions
→generating images and copies of the stick
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=== generating images and copies of the stick === | === generating images and copies of the stick === | ||
Fill empty part of all partitions on the stick with “zeros”: for each partition, do | |||
dd if=/dev/zero of=/mountpoint/delete.me bs=65536 # this will stop when filesystem full | dd if=/dev/zero of=/mountpoint/delete.me bs=65536 # this will stop when filesystem full | ||
rm /mountpoint/delete.me | rm /mountpoint/delete.me | ||
This also seems to result in faster writes afterwards i.e. it is a way to restore the write speed of a USB stick. | |||
Save a compressed disk image - we use the parallel gzip program called pigz: | |||
dd if=/dev/sd? | pigz -c usbstick.img.gz | dd if=/dev/sd? | pigz -c usbstick.img.gz | ||
(time: ~180 secs speed: ~175MB/s, size of image: 1.8 GB) | (time: ~180 secs speed: ~175MB/s, size of image: 1.8 GB) | ||