Thanks for the advise.
Is there a way to instruct zeroshell to do noacpi boot everytime?
Yes, there is.
Booting with the compactflash version, you have to perform the following steps:
– open the shell from the serial or VGA console;
– remount the /boot partition in read/write mode with the command
mount -o remount,rw /boot
– edit the /boot/grub/menu.lst with the vi editor and change the option
“default 0” to “default 1”
When you will restart the system will disable the ACPI.