If you require special device drivers to be loaded to mount the root file system (for SCSI drives, network cards, or exotic file systems, for example), you must create an initial RAM disk image named
/boot/initrd.img. For most users, it is not necessary to create this file, but if you are not certain, it really does not hurt. To create an
initrd.img file, use the shell script
The format for the command is the following, where file_name is the name of the image file you want to create:
/sbin/mkinitrd file_name kernel_version
mkinitrd looks at
/etc/ raidtab to obtain the information it needs to determine which modules should be loaded ...