[syslinux] Dell OptiPlex GX620 can longer boot from CD with syslinux-5.X

[Shao Miller]

On 7/7/2013 21:25, Patrick Verner wrote:
> On Sun, Jul 7, 2013 at 6:11 PM, Shao Miller <sha0.miller at gmail.com
> <mailto:sha0.miller at gmail.com>> wrote:
>
>     On 7/6/2013 09:20, Patrick Verner wrote:
>
>         Same CD. Any Linux distribution without the 5.X series boots on this
>         machine. We can use 4.06 and it boots just fine. It's not the
>         computer's
>         hardware. Like I said, we can take the CD out of the GX620 and
>         place it in
>         the 9010 and it boots. Put 4.06 on the CD, and they both boot.
>
>
>     That error message (about the checksum) comes from core/isolinux.asm
>     in move_verify_image, if I'm not mistaken.  A wild guess would be
>     that an unexpected sector size is in use.  What is the command used
>     to produce the .iso file?  - Shao
>
>
> genisoimage -A 'Parted Magic '$version'' -f -r -hide-rr-moved
> -hide-joliet-trans-tbl -J -l -allow-limited-size -b
> boot/syslinux/isolinux.bin -c boot/syslinux/boot.cat <http://boot.cat>
> -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot
> -efi-boot EFI/boot/efiboot.img -no-emul-boot ./ > ../pmagic_$version.iso
>
> Nothing really out of the ordinary. I copied the command from Debian and
> only altered a few file locations that we use. That shouldn't matter.
> The same command works on that machine with 4.06.

Would it be worth a try without -efi-boot ?  You might waste a disc, 
unless it's re-writable.  I'm just about to dig into this genisoimage 
option and find out more about it.  Maybe the Dell GX620 has some kind 
of partial (U)EFI logic.  - Shao