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Top Forums UNIX for Dummies Questions & Answers Not able to log into single user mode. Post 302501195 by pinga123 on Thursday 3rd of March 2011 12:34:59 AM
Old 03-03-2011
Not able to log into single user mode.

Hi as per the article given.
Boot Linux Grub Into Single User Mode

I m modifying the boot entry

Code:
grub edit> kernel /vmlinuz-2.6.18-92.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet Single

and then booting from it by pressing b.
However the machine is getting booted into runlevel 5.

if the above entry is modified as
Code:
grub edit> kernel /vmlinuz-2.6.18-92.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet 1

then it goes into runlevel 1.

I just want to know why Single word is not working? and
Is booting the system into runlevel 1 is same as single user mode?



when i try with following parameter (note : s is small letter)
Code:
grub edit> kernel /vmlinuz-2.6.18-92.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet single

the machine get booted to an environment which looks similar to single user mode but when i type runlevel is says unknown.
Code:
#runlevel
unknown


Last edited by pinga123; 03-03-2011 at 01:48 AM..
 

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GRUB-INSTALL(8) 							FSF							   GRUB-INSTALL(8)

NAME
grub-install - install GRUB on your drive SYNOPSIS
grub-install [OPTION] install_device DESCRIPTION
Install GRUB on your drive. -h, --help print this message and exit -v, --version print the version information and exit --root-directory=DIR install GRUB images under the directory DIR instead of the root directory --grub-shell=FILE use FILE as the grub shell --no-floppy do not probe any floppy drive --force-lba force GRUB to use LBA mode even for a buggy BIOS --recheck probe a device map even if it already exists INSTALL_DEVICE can be a GRUB device name or a system device filename. grub-install copies GRUB images into the DIR/boot directory specfied by --root-directory, and uses the grub shell to install grub into the boot sector. The grub source distribution carries this script to ease the installation of grub as a boot loader. In Suse Linux however, grub installa- tion is much better handled by Yast; use of this script is generally discouraged and therefore unsupported. Consequently, the script has been renamed to grub-install.unsupported. In order to (re-)install grub for the currently running system, simply use Yast. For an installation aiming at a differing system, the crafting of an appropriate device.map and grub shell script is strongly advised, e.g. "grub --batch --device-map=target-device.map < tar- get-grub.conf" SEE ALSO
The full documentation for grub-install is maintained as a Texinfo manual. If the info and grub-install programs are properly installed at your site, the command info grub-install should give you access to the complete manual. grub-install (GNU GRUB 0.97) May 2005 GRUB-INSTALL(8)
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