Linux Startup Parameters

Linux Startup parameters-general Linux technology-Linux programming and kernel information. For details, refer to the following section. Linux noapic (skip hardware detection)
Linux pci = noapic (skip pci Card part hardware detection)
Linux ide = nodma (disable dma support for all IDE devices)
Linux mem = 1536 M (may be used when the memory exceeds 1 GB)
Linux vga = 0 (set vga as the default)
Linux acpi = off (turn off the acpi feature)
Linux noagp (skip the detection of The agp slot)
Linux noaudio
Linux noddc
Linux nopcmcia
Linux noscsi
Linux nousb
Linux nofireware
Linux noapm (disable advanced power management)

Apic this command bypasses Common Errors in the BIOS of the Intel javasgx chip set. It should only be executed using the installer kernel.

Apm = allow_ints this command changes the processing method of the suspended service (which may be necessary for some laptops ).

Apm = off this command disables APM (Advanced Power Management ). It is very useful, because some BIOS Power Management (APM) problems, it is easy to crash.

Apm = power_off this command will disable (power-off) the Red Hat Linux system by default. It is useful for SMP systems that are not disabled by default.

Apm = realmode_power_off some BIOS crash when trying to shut down (power-off) the machine. This command changes the operation method from Windows NT to Windows 95.

This parameter causes the installer to prompt you to use the driver disk.

Display = IP: 0 this command allows remote display and forwarding. Here, the IP address should be replaced with the IP address you want to act as the display system.

On the system you want to display, you must execute the xhost + remotehostname command. The remotehostname here is the name of the host where you run the display command. The xhost + remotehostname command limits access to the remote display terminal, and does not allow access from people or systems not explicitly granted remote access.

Driverdisk: The command runs the same function as the dd command. It also prompts you to use the driver disk in Red Hat Linux installation.

Expert this command enables the following special features: Allow partitions on removable media; prompt to insert the driver disk;

Ide = nodma this command disables DMA on all IDE devices and may be useful in case of IDE-related problems.

Isa prompts you to enter the ISA Device Configuration.

Linux upgradeany this command will relax some checks on your/etc/redhat-release file. If your/etc/redhat-release file has been changed from the default content. When trying to upgrade Red Hat Linux 9, you may not be able to find your Red Hat Linux installation.

Lowres this command forces the graphical (GUI) installer to run at a lower resolution (640x480 ).

Mediacheck this command provides you with the opportunity to test the integrity of the installation source (if you are using an ISO-based method ). Verifying the integrity of the ISO image before trying to install the image will help you avoid problems frequently encountered during installation.

Mem = xxxM this command allows you to exceed the number of memory detected by the kernel on the machine. You may need to use this command on some older systems that only detect 16 MB of video memory and some newer video cards that share the video memory with the main memory. When executing this command, xxx should replace the memory size in MB.

Nmi_watchdog = 1 this command enables the built-in kernel deadlock detector. It can be used to debug Hard Kernel locks. By executing regular NMI (unblocking interrupt) interruptions, the kernel can monitor whether the CPU is locked and print debugging messages as needed.

Noapic this command tells the kernel not to use the APIC chip. It is helpful for some motherboard With bad APIC (such as Abit BP6) or bad BIOS.

Noathlon this command tells the kernel to disable Athlon optimization. If Athlon optimization is found to be ineffective on some chip sets, it will play a role.

Noht this command disables hyper-threading (if available in SMP system ).

Nomce this command disables self-diagnosis checks executed on the CPU. By default, the kernel enables self-diagnosis of CPU (Machine Check Exception ). On some older Compaq machines, such checks run too frequently and may need to be disabled.

The nopass command prohibits you from passing the keyboard and mouse information to the second stage of the installation program. During network installation, it can be used to test the mouse and keyboard configuration screen in the second phase of installation.

Nopcmcia this command ignores any PCMCIA controller on the system.

Noprobe: This command disables hardware detection. Instead, it prompts you to provide hardware information.

Noshell this command prohibits the installation of shell on the second virtual console.

Nousb: This command prohibits the installation of USB support. If the installer is easily suspended early in the process, this command can be used.

Nousbstorage this command prohibits the loading of the USB storage module in the installer. It may be helpful for sorting devices on the SCSI system.

Reboot = B this command changes the way the kernel tries to reboot the machine. If the kernel is suspended when the system is shut down, this command will cause the system to be restarted successfully.

Rescue this command will run the rescue mode. For more information about the rescue mode, see Red Hat Linux customization guide.

Resolution = tells the installer which video mode to run. It accepts all standard resolutions, such as 640x480, 800x600, 1024x768, and so on.

This command enables support for the serial console.

Skipddc this command skips ddc Display detection, which may cause problems on some systems.

Text command to disable the graphical installer and force the installer to run in text mode.

Updates this command will prompt you to insert a floppy disk containing updates (error correction. If you are running a network installation and have stored the update image in the RHupdates/directory on the server, you do not need to use this command.