[syslinux] VirtualBox virtual machine hangs after ISOlinux upgrade 4.05->5.10 and up.

[Ady]

> Hello,
> I have specialized linux installation which uses ISOLinux bootloader. Recently isolinux version has changed from 4.05 to 5.10. From that time there is a problem with VirtualBox VM, It crashes (guru meditation) on attempt to boot from HDD or hangs on installation from CD.
> Strange part is, the very same ISO on ESXi VM works like a charm. Also burned on CD and started on "real" hardware works.
> 
> Tried VirtualBox 4.1.14 on Linux and Windows 4.1.12. Tried to change VM settings, no luck.
> 
> After "Guru meditation" crash there is a log file with last line:
> fatal error in recompiler cpu: Trying to execute code with memory type addr_code=00000000631b0020 addend=00007fceea68e000 at 00000000631b04fd. (iHandlerMemType=0x38 iMMIOMemType=0x30)
> 
> I will appreciate any help, Thank You.
> 
I would suggest, for the purpose of testing Syslinux 5.xx (and its 
variants), to update to VBox 4.2.x.