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Top Forums UNIX for Dummies Questions & Answers Boot from cd-rom to access disk drives Post 99967 by xadamz23 on Wednesday 22nd of February 2006 05:37:59 PM
Old 02-22-2006
Ok,

I've managed to access internal disks when booting from cd-rom, but what I really need to do is access an external disk.

When I'm booted up in multi-user mode, the device name for the disk I need access to is /dev/rzb18c. When I boot from cd-rom, this device is not listed under /dev. I ran the following command to create the device:

/dev/MAKEDEV rzb18

Now there is a rzb18c listed under /dev so I do the following:

mkdir /etc/fdmns/clnc_domain
cd /etc/fdmns/clnc_domain
ln -s /dev/rzb18c

I use the following command to try and mount the disk:

mount -t advfs clnc_domain#clnc /var/mnt

...and I get an error that says something like bad address.

I was able to succesfully mount an internal disk after creating the entries in /etc/fdmns.

Am I missing some steps after the MAKEDEV?
 

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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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