Changing those options involves
editing the /boot/grub/grub.conf file.
Temporarily Changing Boot Options
From the GRUB boot screen, you can select to change or add boot options for the current boot session.
First, select the operating system you want (using the arrow keys) and type e (as described
earlier). You will see a graphical screen that looks like the one shown in Figure 7-2.
There are three lines in the example of the GRUB editing screen that identify the boot process for
the operating system you chose. The first line (beginning with root) shows that the entry for the
GRUB boot loader is on the seventh partition of the first hard disk (hd0,6). GRUB represents the
hard disk as hd, regardless of whether it is a SCSI, IDE, or other type of disk. You just count the
drive number and partition number, starting from zero (0).
The second line of the example (beginning with kernel) identifies the boot image (/boot/vmlinuz-
2.6.20-1.3104.fc7) and several options. The options identify the partition as initially being
loaded ro (read-only) and the location of the root file system on a partition with the label
root=LABEL=/123. The third line (starting with initrd) identifies the location of the initial
RAM disk, which contains the minimum files and directories needed during the boot process.
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