On 10/16/2016 11:05 PM, Robert Storey wrote:
>
> In order to install, he downloaded file(s):
>
> devuan_jessie_1.0.0-beta_i386_CD.iso
>
> and
>
> devuan_jessie_1.0.0-beta_i386_NETINST.iso
>
> Installed to a usb stick as follows:
>
> dd if=devuan_jessie_1.0.0-beta_i386_CD.iso of=/dev/sdb bs=4M
> sync
>
> But neither machine will boot either of these installed ISO files,


The Devuan isos are already isohybrid, and they boot from usb here. I
don't know why the Refracta isos work for you but the Devuan don't.

Here's the xorriso command used to make the Refracta isos. I don't know
what Devuan uses.

    xorriso -as mkisofs -r -J -joliet-long -l \
-isohybrid-mbr /path/to/isohdpfx.bin \
    -partition_offset 16 -V "snapshot-live-cd"  -b isolinux/isolinux.bin
-c isolinux/boot.cat -no-emul-boot \
    -boot-load-size 4 -boot-info-table -eltorito-alt-boot \
-e boot/grub/efiboot.img -isohybrid-gpt-basdat -no-emul-boot \
-o "$snapshot_dir"/"$filename" iso/

-fsr