Can't create ISO of Debian 9.4 install DVD

Help with issues regarding installation of Debian

Can't create ISO of Debian 9.4 install DVD

Postby Tonto » 2018-12-22 02:08

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?
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Re: Can't create ISO of Debian 9.4 install DVD

Postby stevepusser » 2018-12-22 04:43

How are you converting the disk to an ISO image in those programs?
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Re: Can't create ISO of Debian 9.4 install DVD

Postby Tonto » 2018-12-22 05:15

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

Use "Copy media" with the option "image only".
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Re: Can't create ISO of Debian 9.4 install DVD

Postby p.H » 2018-12-22 08:20

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)
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Re: Can't create ISO of Debian 9.4 install DVD

Postby Tonto » 2018-12-22 13:21

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.
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Re: Can't create ISO of Debian 9.4 install DVD

Postby p.H » 2018-12-22 19:56

Tonto wrote: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.

Tonto wrote: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.
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