Tag: Press

Howto Reboot or halt Linux system in emergency

Linux kernel includes magic system request keys. It was originally developed for kernel hackers. However, you can use this hack to reboot, shutdown or halt computer safely (remember safe reboot/shutdown == flush filesystem buffers and unmount file system and then reboot so that data loss can be avoided). This is […]

How to Fix by reconfiguring boot.ini using Recovery Console

1.Boot with XP CD or 6 floppy boot disk set. 2. Press R to load the Recovery Console. 3. Type bootcfg. 4. This should fix any boot.ini errors causing setup not to see the  XP OS install. 5. Try the repair install. One more suggestion from MVP Alex Nichol “Reboot, this […]

FreeBSD > Becoming super user (su) or enabling su access to user

The superuser is a privileged user with unrestricted access to all files and commands. The superuser has the special UID (user ID) 0. You need to become super user (root) only when tasks need root permissions. Here is how to become super user: 1) At shell prompt type su and […]

FreeBSD >Sending a Message to All Users on a System

You can use the wall command to send a message to every user on a system. General syntax of wall command is as follows: wall Message Message … …. .. When the message is complete, press Control-D. 1) To display message “Disk failure system will be down for 30 minute” […]

How to find MAC address in CentOS

Open SSH and type the following and press Enter: /sbin/ifconfig | grep -i hwaddr The sequence of hexadecimal digits that appears to the right of eth0 HWAddr (e.g. 08:00:27:ED:DA:8b) is your network card’s MAC Address} else {


If you get an error that NTLDR is not found during bootup, If you have FAT32 partitions, it is much simpler than with NTFS. Just boot with a Win98 floppy and copy the NTLDR or NTDETECT.COM files from the i386 directory to the root of the C:\ drive. For NTFS: […]

Corrupted or Missing \WINDOWS\SYSTEM32\CONFIG

If you get the error: Windows could not start because the following files is missing or corrupt \WINDOWS\SYSTEM32\CONFIG\SYSTEM or \WINDOWS\SYSTEM32\CONFIG\SOFTWARE Insert and boot from your WindowsXP CD. At the first R=Repair option, press the R key Press the number that corresponds to the correct location for the installation of Windows […]

Solaris > How to boot system into emergency mode

IA32: To boot system for emergency mode (boot from CD) 1) Boot from Solaris 1st CD 2) At Solaris Device Configuration Assistant, Press F2 key 3) Then press ENTER key twice 4) At Identified Devices, Press F2 key 5) At Boot Solaris, select CD to boot system 6) At next […]

CentOS/Fedora forgotten password

What to do if you forgot the password for your CentOS/Fedora/Redhat machine?? Here are some simple steps to change back the password by entering into single user mode of your machine provided you do not forgotten your grub password if you have set it 😉 Reboot your machine Press ‘Esc’ […]