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Bug#1118254: installation-guide-amd64: Problem on "debian.org" DebianInstaller USBCreateMedia web page



Hi,

Thomas Kragh <thomas.kragh@math.uu.se> (2025-10-17):
> On the web page https://wiki.debian.org/DebianInstaller/CreateUSBMedia
> it is said that one can copy the debian.iso file directly to the media
> using:
> 
> sudo cp debian.iso "$TARGET_DEVICE"
> 
> However, "cp" reports the error:"cp: cannot create regular file '/dev/sdb': No medium found"

The documented command has been working for many years and I don't
really see why it wouldn't work all of a sudden.

I've just verified on this specific Debian 12 system:

    kibi@tokyo:~$ lsblk|grep sdb
    sdb                                  8:16   1 29.9G  0 disk  
    kibi@tokyo:~$ sudo cp -v isos/debian-13.0.0-amd64-netinst.iso /dev/sdb 
    'isos/debian-13.0.0-amd64-netinst.iso' -> '/dev/sdb'

(-v is only about verbosity.)

What system are you running? Are you sure /dev/sdb was the correct
device in the first place? `dmesg` might give some hints about what
happened.


Cheers,
-- 
Cyril Brulebois (kibi@debian.org)            <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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