Red Hat ENTERPRISE LINUX 3 - FOR X86-ITANIUMTM-AMD64 AND INTEL EXTENDED MEMORY 64 TECHNOLO, Installation Manual

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64 Appendix A. Upgrading Your Current System
Figure A-4. Boot Loader Installation
If your system will use only Red Hat Enterprise Linux, you should choose the MBR.
Click the
Change Drive Order button if you would like to rearrange the drive order or if your BIOS
does not return the correct drive order. Changing the drive order may be useful if you have multiple
SCSI adapters, or both SCSI and IDE adapters, and you want to boot from the SCSI device.
The
Force LBA32 (not normally required) option allows you to exceed the 1024 cylinder limit for
the
/boot
partition. If you have a system which supports the LBA32 extension for booting operating
systems above the 1024 cylinder limit, and you want to place your
/boot
partition above cylinder
1024, you should select this option.
Tip
While partitioning your hard drive, keep in mind that the BIOS in some older systems cannot access
more than the first 1024 cylinders on a hard drive. If this is the case, leave enough room for the
/boot
Linux partition on the first 1024 cylinders of your hard drive to boot Linux. The other Linux partitions
can be after cylinder 1024.
In
parted
, 1024 cylinders equals 528MB. For more information, refer to:
http://www.pcguide.com/ref/hdd/bios/sizeMB504-c.html
If you wish to add default options to the boot command, enter them into the
Kernel parameters
field.
Any options you enter are passed to the Linux kernel every time it boots.
A.3.3. Rescue Mode
If you need to use rescue mode, there are several options available to you.
•
Using the CD-ROM to boot, type
linux rescue
at the
boot:
prompt.
•
By booting your system from an installation boot diskette made from the
bootdisk.img
image.
This method requires that the Red Hat Enterprise Linux CD-ROM #1 be inserted as the rescue