Sophos UTM 9 RPM Installation Error

Installing would have been easier if I had realised earlier that:
  • There's an 'asg' image to be used, not the first on the list 'isg'
    • ISG variant won't fail right away, but at some point aborts because the hardware is not found
  • The disk interface better be Virtio
    • SCSI disk will be a 'hard drive not found' failure of sorts
    • SATA did install but it would not boot for some reason
  • The hard drive needs to be large enough, or strange errors happen
    • Below 10G drive, it will abort complaining it will need at least 10G
    • With a 10G drive, it will fail during installation with the 'RPM Installation Error'
    • With 15G drive, it succeeds. Afterwards I see the hardware requirements do specify 60G, but the installer just incorrect limits


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