Книга: Fedora™ Unleashed, 2008 edition

Creating an Initial RAM Disk Image

Creating an Initial RAM Disk Image

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. We covered the initrd.img in Chapter 34. To create an initrd.img file, use the shell script /sbin/mkinitrd.

The format for the command is the following:

/sbin/mkinitrd filename kernel_version

where filename is the name of the image file you want created.

mkinitrd looks at /etc/fstab, /etc/modprobe.conf, and /etc/raidtab to obtain the information it needs to determine which modules should be loaded during boot. For our personal systems, we use the following:

# mkinitrd initrd-2.6.7-1.img 2.6.7-1

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