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Full Discussion: boot floppy
Top Forums UNIX for Advanced & Expert Users boot floppy Post 25193 by RTM on Thursday 25th of July 2002 10:00:26 PM
Old 07-25-2002
This is the procedure for creating a bootable floppy:

Procedure for creating a bootable SunOS floppy diskette.

1. Insert floppy in Diskette Drive.
2. newfs /dev/rfd0c
3. mount /dev/fd0 /mnt
4. cp /usr/mdec/bootfd /mnt/bootfd
5. cp /usr/kvm/stand/boot.sun4c /mnt/boot
6. /usr/mdec/installboot /mnt/boot bootfd /dev/rfd0c
7. Copy your vmunix kernel to the floppy.

Note: There will only be ~950K remaining so the vmunix
will have to be very small.

Here is a sample installation session:

# newfs /dev/rfd0c
/dev/rfd0c: 2880 sectors in 80cylinders of 2 tracks,
18 sectors
1.5MB in 5 cyl groups (16 c/g, 0.29MB/g, 128 i/g)
super-block backups (for fsck -b #) at:
32, 640, 1184, 1792, 2336,

# mount /dev/fd0 /mnt

# cp /usr/mdec/bootfd /mnt

# cp /usr/kvm/stand/boot.sun4c /mnt/boot

# installboot -v /mnt/boot bootfd /dev/rfd0c
Primary boot: bootfd
Secondary boot: /mnt/boot
Boot device: /dev/rfd0c
Bootblock will contain a.out header
Boot size: 0x1af40
Boot checksum: 0xf22db98e
Boot block installed

# ls /mnt
boot bootfd lost+found

I doubt if you could put all this into some file, ftp it to the p.c., and then put it on the floppy. The problem I see is the newfs command and the installboot command. How to create the floppy
with this... And then how to use it even if you did create it since the SUN system does not have a floppy.
 

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installgrub(1M) 														   installgrub(1M)

NAME
installgrub - install GRUB in a disk partition or a floppy SYNOPSIS
/sbin/installgrub [-fm] stage1 stage2 raw-device The installgrub command is an -only program. GRUB stands for GRand Unified Bootloader. installgrub installs GRUB stage 1 and stage 2 files on the boot area of a disk partition. If you specify the -m option, installgrub installs the stage 1 file on the master boot sector of the disk. The installgrub command accepts the following options: -f Suppresses interaction when overwriting the master boot sector. -m Installs GRUB stage1 on the master boot sector interactively. The installgrub command accepts the following operands: stage1 The name of the GRUB stage 1 file. stage2 The name of the GRUB stage 2 file. raw-device The name of the device onto which GRUB code is to be installed. It must be a character device that is readable and writable. For disk devices, specify the slice where the GRUB menu file is located. (For Solaris it is the root slice.) For a floppy disk, it is /dev/rdiskette. Example 1: Installing GRUB on a Hard Disk Slice The following command installs GRUB on a system where the root slice is c0d0s0: example# /sbin/installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c0d0s0 Example 2: Installing GRUB on a Floppy The following command installs GRUB on a formatted floppy: example# mount -F pcfs /dev/diskette /mnt # mkdir -p /mnt/boot/grub # cp /boot/grub/* /mnt/boot/grub # umount /mnt # cd /boot/grub # /sbin/installgrub stage1 stage2 /dev/rdiskette /boot/grub Directory where GRUB files reside. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ boot(1M), fdisk(1M), fmthard(1M), kernel(1M), attributes(5) Installing GRUB on the master boot sector (-m option) overrides any boot manager currently installed on the machine. The system will always boot the GRUB in the Solaris partition regardless of which fdisk partition is active. 24 May 2005 installgrub(1M)
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