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Top Forums UNIX for Beginners Questions & Answers I have forgot my root password. Solaris 10 Post 303040222 by hicksd8 on Friday 25th of October 2019 05:10:50 AM
Old 10-25-2019
You need to get on the system one way or another as superuser (root). Then edit /etc/shadow exactly as MadeInGermany says to remove the hashed password field for user root.

Usually superuser access is achieved by booting from DVD (installation media) into single user:

Code:
boot cdrom -s

which will not take you into the installation routine but allow you a shell to make changes.

This is easier if you are running simple UFS filesystems.

If your filesystems are ZFS then post back here and we'll tell you how to do it.
 

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re-preinstall(1M)					  System Administration Commands					 re-preinstall(1M)

NAME
re-preinstall - installs the JumpStart software on a system SYNOPSIS
cdrom-mnt-pt/Solaris_XX/Tools/Boot/usr/sbin/install.d/re-preinstall [-m Solaris_boot_dir] [-k platform_name] target-slice DESCRIPTION
re-preinstall installs the JumpStart software (preinstall boot image) on a system, so you can power-on the system and have it automatically install the Solaris software (perform a JumpStart installation on the system). When you turn on a re-preinstalled system, the system looks for the JumpStart software on the system's default boot disk. All new SPARC systems have the JumpStart software already preinstalled. The XX in Solaris_XX is the version number of the Solaris release being used. You can use the re-preinstall command in several ways. The most common way is to run re-preinstall on a system to install the JumpStart software on its own default boot disk. This is useful if you want to restore a system to its original factory conditions. (See the first procedure described in EXAMPLES.) You can also run re-preinstall on a system to install JumpStart software on any attached disk (non-boot disk). After you install the Jump- Start software on a disk, you can move the disk to a different system and perform a JumpStart installation on the different system. (See the second procedure described in EXAMPLES.) re-preinstall creates a standard file system on the specified target-slice (usually slice 0), and re-preinstall makes sure there is enough space on the target-slice for the JumpStart software. If sufficient space is not available, re-preinstall fails with the following message: re-preinstall: target-slice too small xx Megabytes required You can use the format(1M) command to create sufficient space on the target-slice for the JumpStart software. OPTIONS
The following options are supported: -k platform_name Platform name of the system that will use the disk with the JumpStart software. The default is the platform name of the system running re-preinstall. (Use the uname(1) command (-i option) to determine a system's platform name.) -m Solaris_boot_dir Absolute path to the Solaris_XX/Tools/Boot subdirectory of a mounted Solaris CD or a Solaris CD copied to disk that re-preinstall uses to install the JumpStart software. The default is root (/), which is where the Solaris CD is mounted in single-user mode. OPERANDS
The following operands are supported: target-slice Device name of the disk slice where the JumpStart software will be installed (usually slice 0), for example, c0t3d0s0. EXAMPLES
Example 1: Installing the JumpStart Software on a System's Own Default Boot Disk The following procedure installs the JumpStart software on a system's own default boot disk: 1. From the ok prompt, boot the system from the Solaris media CD or DVD in single-user mode: ok boot cdrom -s 2. The following command installs the Jumpstart software on the System default boot disk, c0t0d0s0 on a Solaris 9 system: example# /usr/sbin/install.d/re-preinstall c0t0d0s1 3. Reboot the slice: example# reboot disk:b Example 2: Installing the JumpStart Software on a System's Attached (non-boot) Disk The following procedure installs the JumpStart software on a system's attached (non-boot) disk: 1. Mount the Solaris CD or DVD if vold(1M) is not running or CD or DVD is not mounted. 2. Use the format(1M) command to determine the target-slice where JumpStart will be installed. 3. Use the uname(1) command (-i option) to determine the platform name of the system that will use the re-preinstalled disk 4. Run re-preinstall with the -m Solaris_boot_dir option if the Solaris CD or DVD is not mounted on /cdrom. The following command installs the JumpStart software on the system's attached disk for a system with a Sun4u kernel architecture, and it uses the Solaris CD or DVD mounted with vold(1M) on a Solaris 9 system: example# /cdrom/cdrom/s1/usr/bin/install.d/re-preinstall -m /cdrom/cdrom/s1 -k sun4u c0t2d0s0 EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error has occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcdrom (Solaris CD, | | |SPARC Platform Edition) | +-----------------------------+-----------------------------+ SEE ALSO
uname(1), eeprom(1M), format(1M), mount(1M), vold(1M), attributes(5) Solaris 10 Installation Guide: Basic Installations SunOS 5.10 9 Apr 2002 re-preinstall(1M)
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