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

[Shao Miller]

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