Re: Will te UUID or blkid of a device change?

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

Hans wrote:
> > I want to make sure, that the correct USB-stick is used.
> > Thus I can do by using the UUID of the target stick like
> > dd if=/path/to/myfile.iso of=UUID="123456-abcd-............"

David Wright wrote:
>   # dd of=/dev/disk/by-id/JetFlash_Transcend_4GB_JKNB2FYG-0:0  …  …

This is indeed a good solution if the device ID is known and systemd does
not change its way of composing the "by-id" name.
But if you first have to find out the right "by-id" name, then there is
again the risk of user error, especially when in a hurry.


There is a different, interactive approach which depends on the fact that
the Linux kernel creates a new device file when a USB stick is plugged in:

  https://packages.debian.org/stable/xorriso-dd-target
  https://wiki.debian.org/XorrisoDdTarget

The man page of xorriso-dd-target demonstrates more use cases, like:
  - List all devices with reasoning
  - Evaluate particular given devices


Have a nice day :)

Thomas