Can't create ISO of Debian 9.4 install DVD

[Tonto]

I have a DVD set of Debian 9.4 and need to create a bootable USB stick of the first disk. When I try to create an ISO image, all I get is a 2048-byte file.

This happens in both Brasero and K3B.

Could someone please explain why this is happening, and how to create the ISO file required as per the instructions on the Debian website?

[stevepusser]

How are you converting the disk to an ISO image in those programs?

[Tonto]

How are you converting the disk to an ISO image in those programs?

Use "Copy media" with the option "image only".

[p.H]

As root, use dd or cp instead.

Code: Select all

dd if=/dev/sr0 of=/path/to/image.iso bs=1M

Code: Select all

cp /dev/sr0 /path/to/image.iso

(replace sr0 with the actual DVD drive device name)

[Tonto]

OK, thanks. But WHY does this happen?

I've been using Linux for eighteen years, and in the early days used to UNDERSTAND it. Nowadays so much happens by "magic" that I no longer do, and I resent that. Even worse, documentation is fast disappearing, and being replaced by incantations. Doesn't bode well for the future.

[p.H]

But WHY does this happen?

I do not use K3B and Brasero, I do not need to use bloatware to create a disk image and don't know what they do or try to do when you ask them to create such image. All I can say is that 2048 bytes is the sector size on optical disks.

I've been using Linux for eighteen years, and in the early days used to UNDERSTAND it.

Then you must have learned to use dd and cp.