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Create ISO from USB drive

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You can use dd for this. In the example commands below, I'm assuming your USB device is recognized by the system as /dev/sdb. You should make sure that this is the case before executing any of the commands below, because if you get the device name wrong, the second command below will end up overwriting the wrong device and destroying your data.

To make an image from your existing USB setup and write it to the file usb-image.iso:

Code:
sudo dd if=/dev/sdb of=usb-image.iso
You could now remove your current USB device and connect an empty device, which the system should again see as /dev/sdb. To copy the usb-image.iso file onto the new device:

Code:
sudo dd if=usb-image.iso of=/dev/sdb
Again it is EXTREMELY IMPORTANT that you make sure you're using the correct device name before executing the command above. Otherwise you run the risk of clobbering the data on some other disk device that may be critical to your system.
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