Installing CentOS and its preparations (chp2)

Installing CentOS CD

1. Insert CentOS LiveCD
   
2. At Boot Screen, press any key
   
3. At login screen, let the login prompt time out
   
4. Done. Desktop should be loaded.
   
5. From GNOME desktop you can:
   
   1. Run Applications
      
   2. Check Hardware
      
   3. Prepare for Dual Booting
      

You cannot upgrade to CentOS from Red Hat Enterprise Linux or Fedora system.

If you use Java RPM, then it may be erased during an upgrade. If that occurs you can install the Java RPM from jpackage.org or install the Jave tarball into your /opt directory.

Command “linux askmethod” at startup boot: screen will allow linux to prompt you on the method of installation. Example: It will ask you to install from: Local DVD or CD; Hard Drive; NFS Directory; FTP; and HTTP.

CentOS demands at least 512 MB of RAM.

How to display hardware information from the terminal:

$ /sbin/lspci –vv | less        >>>>    Will display computer’s hardware

$ /sbin/lsusb            >>>>     Will display usb devices

$ su –

$ yum install hwbrowser    >>>>     Will install the hardware browser, and will need the internet access for this command to work.

$ hwbrowser             >>>>    Will open the hardware browser

How to check your computer memory:

• System >>>>> Administration >>>>> System Monitor >>>>> Resources

How to manually turn on swap partition located at /dev/sda2:

• Type “swapon /dev/sda2″

Testing your hardware:

• Sound Card:     System >>>>> Administration >>>>> Sound Card
• Network / Internet:     System >>>>> Administration >>>>> Network
• Video Card:     System >>>>> Administration >>>>> Display
  • Or you can type this command in the terminal: # grep Chipset /var/log/Xorg.0.log

Other commands for checking out your computer:

• cat /proc/interrupts >>>>> Show what interrupts are in use
  
• cat /proc/cpuinfo >>>>> Show CPU info
  
• cat /proc/bus/usb/devices >>>>> show attached and detected USB devices
  
• /sbin/lspci >>>>> Show listing of PCI devices found (-vv for more verbose info)
  
• cat /proc/cmdline >>>>> show command line options the system booted with
  
• cat /proc/ioports >>>>> show ioports in use and the devices using them
  
• less /var/log/messages >>>> Page through the log of system start-up messages

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