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- file: README.disk
- date: 01-Oct-2000
-
- The LILO source directory contains the source code to produce a diag-
- nostic floppy disk for determining the BIOS capabilities of your sys-
- tem, as well as the disk geometry of each of your hard drives.
-
- Creating the floppy
- ===================
- Change into the /usr/lib/lilo directory. Insert a formatted floppy
- disk into the A: drive (/dev/fd0). Type the command "make -f Makefile.floppy".
- A bootable floppy disk will be created.
-
- Running the diagnostic
- ======================
- Use CTRL-ALT-DELETE to re-boot your system from the floppy disk. This
- allows the diagnostic program, disk.com, to interrogate your BIOS with-
- out having an operating system between it and your BIOS and hardware.
- The diagnostic program will report on the EBDA (Extended BIOS DATA Area),
- as the size of this area affects where LILO loads into memory. It will
- also report on your disk geometry: the number of cylinders, heads, and
- sectors that LILO will see in trying to boot your machine. Sometimes
- the diagnostic will report two different sets of geometry for the same
- hard drive. This happens when the old BIOS call (fn=0x08, int=0x13),
- which is limited to 1024 cylinders, is unable to address all sectors
- on your disk. The second line is from the new BIOS call (the EDD packet
- interface on int=0x13), which allows addressing all sectors on the
- disk.
-
- Caution
- =======
- If you have an older system, and run a "soft" BIOS, such as EZ-DRIVE,
- MaxBlast, or Disk Manager, you must allow the soft BIOS to install first
- from your hard drive, then follow the instructions to boot from floppy.
- Remember, LILO will see the soft BIOS in booting from the hard drive,
- so you must be sure that the diagnostic utility booted from floppy also
- sees the soft BIOS. If you boot from the A: drive ahead of the C: drive
- in this case, the diagnostic floppy report may be misleading.
-
- John Coffman <johninsd@san.rr.com>
- (end)
-