How to set boot-loader password

linuxjamil · 02-27-2008, 09:19 AM

Dear All

Plz tell how to set boot-loader password in linux from command prompt.

p_s_shah · 02-27-2008, 09:36 AM

Hi,

From grub command prompt, Run md5crypt.

Code:

grub> md5crypt
Password: **********
Encrypted: <Encrypted Password>

Add following line to grub.conf

Code:

password --md5 <Encrypted Password>

Check page 9 of http://www.scribd.com/doc/14933/Secu...ub-Boot-Loader

Regards,

haroldpga · 02-27-2008, 09:46 AM

It depends upon the boot loader you are using. With grub, you first need to create an encrypted password with the "grub-md5-crypt" command. You must be root to do this.

[root@mickey ~]# grub-md5-crypt
Password:
Retype password:
$1$XrTDO$u5L0Vx/NSj1UnuHVBsVkw/
[root@mickey ~]#

Next, edit the grub config file (in fedora this is /boot/grub/grub.conf) and insert the following line right after the "default" and "timeout" lines:

password --md5 $1$XrTDO$u5L0Vx/NSj1UnuHVBsVkw/

Be sure and use 'copy and paste' to get it exactly the same as was generated by the grub-md5-crypt command.

Hope this helps

Harold