I have a usb stick with two partitions FAT 32 adn ext3. First one is used to boot from using SystemRescueCD. Second one contains the image I use with image recovery tool.
I have to copy such an usb 10 times so I thouhgt maybe there is an easy way to do this,
something like cp /dev/sdb ?
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2 Answers
you can clone it with dd.
assuming your flash drive is /dev/sbd and you are cloning it to a second flash drive, /dev/sdc
sudo dd if=/dev/sdb of=/dev/sdc bs=4096 conv=notrunc,noerror
You can save a compressed image to your harddrive
sudo dd if=/dev/sdb ibs=4096 conv=noerror | gzip > your_image.gz
Then use the image to make a new flash
dd if=your_image.gz | gunzip | dd of=/dev/sdc
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For big partitions (> 500GB, say), it's very worth optimizing the block size parameter.– mlissnerApr 30, 2018 at 20:38
You want to use the dd utility.
Basically, dd if=/dev/xda of=/dev/xdb where xda is the input drive ('if means input file, of means output file).
See this post: http://ubuntuforums.org/showthread.php?p=5627660#post5627660
dd is a utility for bit for bit copies. Make sure to try this on something you don't care about before doing it to a mission critical usb stick.
