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Archive for the ‘Sun Solaris 10’ Category

Forgot root password for Sunsolaris 10, No Worries !

Posted by Hendry chinnapparaj on December 5, 2011

Problem: you are running sun solaris 10 operating system and have forgotten your root password. Assume you have a sun os running in vmware and stuck

Solution:

Boot the Sun Solaris in “SOLARIS FAILSAFE” Mode. By default it enters as single user mode.

This will look for the currently installed Solaris OS on your system and prompts a Yes/No question to mount the Root filesystem as a Read/Write file system onto /a.

Select yes to mount the root file system (/dev/dsk/c0t0d0s0 here) on/a. If you select No, no harm as you still can mount it manually using:

mount /dev/dsk/c0t0d0s0 /a

NOTE: /a is a temporary mount point that is available when you boot from CD or a JumpStart server

Now, with the root file system mounted on /a. All you need to do is to edit the shadow file and remove the encrypted password for root.

# vi /a/etc/shadow

root:

😡

# vi /etc/passwd

root:

😡

# reboot

Now Login using root without password and change the password as below

# passwd root

Now test by Rebooting again and logging in with the new password

Shalom

Hendry

 

 

 

 

 

 

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