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Operating Systems Solaris Need Help, I want to reset password for Sun Fire T2000 Server Post 302712453 by rbatte1 on Tuesday 9th of October 2012 07:58:43 AM
Old 10-09-2012
Well, are we to assume that you don't know the root password? You haven't really said. If this is the case then you may need to boot from original media. Be careful not to run the install though. That could be very damaging.

You will need to know the disk slice that the root filesystem is on by a target address.

From the boot prompt (after a STOP-A keystroke combination) type boot cdrom -s and the server should start from the optical drive. When the dummy server is running (all in memory) get hold of your filesystem such as below:-
Code:
mount /dev/dsk/c0t0d6s0 /mnt
cd /mnt/etc
vi shadow

You should then be able to delete the encrypted password, save the file and do a normal boot.

I don't know how this will work with an SVM disk mirror, but any comments would be appreciated. If this is a single partition of a bigger server, then there may be tricks you can use to get the disks available on another partition and edit the file through that, which may be safer.


I must admit that I last used Solaris version 2.6, so it would be wise to listen to other opinion before leaping in with what I have above.


I hope that this helps,
Robin
Liverpool/Blackburn
 

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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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