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FLOPPY-BOOT.txt
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2001-07-02
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A non-bootable CD-ROM drive can still be used with the LNX-BBC rescue
disc. You will need a working system to prepare a boot floppy; either a
DOS or Linux box can be used.
In Linux:
---------
Mount up the LNX-BBC CD-ROM as an iso9660 filesystem using the commands:
mount -t iso9660 /dev/cdrom /mnt/cdrom
It is assumed that you have a link from /dev/cdrom to the actual device
(e.g. /dev/hdc), your kernel supports iso9660fs, and that you have a
directory called /mnt/cdrom.
It is also assumed that you have a good writable 1.44 floppy in a functioning
floppy drive. (If the floppy has not previously been low-level formatted,
you must first "fdformat /dev/fd0".)
Now the command
dd if=/mnt/cdrom/lnx.img of=/dev/fd0
will make a bootable floppy that can be used in conjunction with the BBC.
If all goes well, you should receive a message on the screen saying something
similar to
2880+ records in
2880+ records out
In DOS:
-------
The command "rawrite2" will prompt you for both a file to write; you
should type "lnx.img" from the root of the CD-ROM drive.
For the destination, enter the DOS path to your 1.44 MB floppy drive, usually
"A:" or "B:".
Booting the system
------------------
As long as your BIOS is set to boot from a 1.44 MB floppy drive, you should
be able to boot with the floppy and the CD-ROM both in the machine, and the
system should work.
We would be happy to receive a bug report if the system does not work; _you
will still need an IDE or PCI SCSI CD-ROM drive_. Booting from a floppy only
removes the requirement that the BIOS be able to boot directly from CD.
Note that if you have CD-ROM support under DOS, you can boot _directly_ into
the BBC from DOS using LOADLIN instead! Run "bootcd.bat" in the "loadlin"
directory on the CD. This won't work from under Windows in protected mode,
only from under DOS.