save to ISO not Mkv

[NickTalope]

Hello

I was lent a set of 3 DVDs from 2002.

Of the 3, only 1 offers me Mkv

The other 2 are in ISO, which is what I want.

Is there a profile for exporting to ISO, or does the software only work for Mkv?

TIA

++
uname -r
6.5.0-26-generic

lsb_release -a
LSB Version: core-11.1.0ubuntu4-noarch:security-11.1.0ubuntu4-noarch
Distributor ID: Ubuntu
Description: Ubuntu 22.04.4 LTS
Release: 22.04
Codename: jammy

[dcoke22]

With DVDs, if you use the backup option, MakeMKV will produce an ISO.

After putting the disc in the drive and after MakeMKV has registered that the disc is there, at the top of the windows click the icon of the yellow folder with the green arrow.