Specifications

The `isapnp_reserve_io=' Argument
This takes the form of: isapnp_reserve_irq=io1,size1,io2,size2,...ioN,sizeN where
ioX,sizeX are I/O start and length pairs of regions in I/O space that are not to be used by PnP.
The `isapnp_reserve_irq=' Argument
This takes the form of: isapnp_reserve_irq=n1,n2,n3,...nN where n1 ... nN are the interrupt
numbers to not use for PnP.
The `isapnp_reserve_mem=' Argument
This takes the form of: isapnp_reserve_mem=mem1,size1,mem2,size2,...memN,sizeN
where ioX,sizeX are I/O start and length pairs of regions in memory space that are not to be used by PnP.
The `kbd−reset' Argument
Normally on i386 based machines, the Linux kernel does not reset the keyboard controller at boot, since the
BIOS is supposed to do this. But as usual, not all machines do what they should. Supplying this option may
help if you are having problems with your keyboard behaviour. It simply forces a reset at initialization time.
(Some have argued that this should be the default behaviour anyways).
The `lockd.udpport=' and `lockd.tcpport' Argument
These tell the kernel to use the given port numbers for NFS lockd operation (for either UDP or TCP
operation).
The `maxcpus=' Argument
The number given with this argument limits the maximum number of CPUs activated in SMP mode. Using a
value of 0 is equivalent to the nosmp option.
The `mca−pentium' Argument
The IBM model 95 Microchannel machines seem to lock up on the test that Linux usually does to detect the
type of math chip coupling. Since all Pentium chips have a built in math processor, this test (and the lock up
problem) can be avoided by using this boot option.
The `md=' Argument
If your root filesystem is on a Multiple Device then you can use this (assuming you compiled in boot support)
to tell the kernel the multiple device layout. The format (from the file linux/Documentation/md.txt)
is:
md=md_device_num,raid_level,chunk_size_factor,fault_level,dev0,dev1,...,devN
Where md_device_num is the number of the md device, i.e. 0 means md0, 1 means md1, etc. For
raid_level, use −1 for linear mode and 0 for striped mode. Other modes are currently unsupported. The
chunk_size_factor is for raid−0 and raid−1 only and sets the chunk size as PAGE_SIZE shifted left the
The Linux BootPrompt−HowTo
The `isapnp_reserve_io=' Argument 14