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installation kernel, or due to certain functionality included in this kernel, such as
ACPI, that can still cause problems on some hardware.
If your system fails to install using the standard Installation mode from the rst in-
stallation boot screen, try the following:
1 With the DVD still in the drive, reboot the machine with [Ctrl] + [Alt] + [Del]
or using the hardware reset button.
2 When the boot screen appears, press [F5], use the arrow keys of your keyboard
to navigate to No ACPI and press [Enter] to launch the boot and installation
process. This option disables the support for ACPI power management tech-
niques.
3 Proceed with the installation as described in Chapter 1, Installation with YaST
(↑Reference).
If this fails, proceed as above, but choose Safe Settings instead. This option disables
ACPI and DMA support. Most hardware will boot with this option.
If both of these options fail, use the boot options prompt to pass any additional pa-
rameters needed to support this type of hardware to the installation kernel. For more
information about the parameters available as boot options, refer to the kernel doc-
umentation located in /usr/src/linux/Documentation/kernel-parameters.txt.
TIP: Obtaining Kernel Documentation
Install the kernel-source package to view the kernel documentation.
There are various other ACPI-related kernel parameters that can be entered at the
boot prompt prior to booting for installation:
acpi=off
This parameter disables the complete ACPI subsystem on your computer. This
may be useful if your computer cannot handle ACPI at all or if you think ACPI in
your computer causes trouble.
acpi=force
Always enable ACPI even if your computer has an old BIOS dated before the year
2000. This parameter also enables ACPI if it is set in addition to acpi=off.
acpi=noirq
Do not use ACPI for IRQ routing.
acpi=ht
Run only enough ACPI to enable hyper-threading.
acpi=strict
Be less tolerant of platforms that are not strictly ACPI specication compliant.
Help and Troubleshooting 245
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