Mixing Acpi & Non-Acpi Computers; Mixing Unicore & Multicore (Or Multi-Cpus) Computers; Hal Selection; Choosing A Specific Hal At Windows Installation - Neoware e140 - Thin Client User Manual

Mixing ACPI & Non-ACPI Computers
Mixing Unicore & Multicore (or multi-CPUs) Computers

HAL Selection

Choosing a Specific
HAL at Windows
Installation
Building a Virtual Hard Disk to Boot any PC or TC
Advanced Control and Power Interface (ACPI) is considered by
Windows 2000/XP/2003 OS as the root-most device in a PC archi-
tecture. A Windows 2000/XP/2003 installation that was made for an
ACPI enabled computer will not be able to boot a non-ACPI com-
puter, even if Neoware UbiBoot has been applied to the system HD.
In case you have to mix ACPI and non ACPI computers that must
boot from the same HD (or HD image, cloned HD etc), you must
perform your original Windows® 2000/XP/2003 installation on a
non ACPI computer, or downgrade your HAL.
The HAL to use in order to take advantage of multi-CPUs (or
multicore CPUs) is the ACPI Multiprocessor PC HAL, ACPI APIC
MP ( ). Note that this HAL cannot be used on Unicore
HALMACPI.DLL
CPU computers. The Unicore capable HALs can be used to boot
Multicore computers, but in this case only one core is used. This is
not recommended for performance reasons. If you have to manage a
fleet of computers that comprise Unicore and Multicore computers,
it is recommended that you create several different images with the
appropriate HALs.
You can specify the HAL to use when performing the Windows
installation. If the Standard PC HAL is chosen, Windows will be
installed with APM (Advanced Power Management) support, not
ACPI. APM is the predecessor of ACPI.
If you perform Windows installation on a non-ACPI compatible PC,
Windows will generally be installed with Standard PC HAL. If you
don't have a non-ACPI PC when you perform your installation of
Mixing ACPI & Non-ACPI Computers 115