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Linux System not Booting: A Troubleshooting Session

In a recent days in our lab I've got a with Linux file system. Our lab used Redhat Linux 5.3 Enterprise version. Redhat Linux is an Unix based Operating System and It based on Ext3 file system

Problem of Linux: The systen cannot access internet. It shows the license expiry error notification. Sometime it doesn't detect the hard drive. Some time the pc can detect hard drive but the Linux started with some errors of file system. Finally the file system of the OS getting crashed and can't boot. At GRUB loading stage it become restarted.

Solution or Troubleshooting: If I replace the hard drive cable It detect well and start OS also. Then the pc can detect hard drive but the Linux started with some errors of file system. Then I discovered that there is a problem with OS. Though formatting can solve the problem but that needs a backup of important data. This is time consuming and risky. So I thought to repair the file system.

At first I'm trying to login in single user mode and repair the file system. I have tried to login by pressing "s" beside kernel at startup in single user mode. But the system doesn't boot. Then I'm trying to repair the OS by RedHat Linux CD. I Insert the CD and select rescue mode by pressing "F5" key. Then I got the single user mode. After that I check all file system sequentially. /etc /passwd, /etc/shadow, /etc/securetty, /etc/pam.d/login. Those file was wrong. I updated those file by correcting. Then I update the auth config file. After that I boot the system again. But now also it don't get start. Then I rescue the grub by grub-rescue and also update the kernel. After the total process I'm tried again to login from single user mode in root and It get logged. After that I reboot the system and tried to login. Finally it logged in successfully and run properly.

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hello sir i'm struggling on where could i download the Redhat OS, can i ask your help pls.....? Thanks


HELLO BRO

here link ...but you need patience if download using free download,because it moree time..
enjoy

Jul 07, 2011 | Red Hat Enterprise Linux 3 for Unix

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Get the drivers for your WiFi card for the correct edition of your RedHat. Wireless card may be incompatable with red hat.

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can't support RHEL 5


Go to Redhat.com

Redhat may not support this board.
You need to read the supported hardware under your version of Redhat.

With Linux, as with any operating system, you should always get the latest version. The newer versions may support the newer hardware. This is not always so...

Go to the support on the redhat.com website. If you have a subscription, you will have complete support.
Go to free websites for Linux and ask with blog or other email, etc. about your problems with the specific version you have. It is very important when asking for help, to state your version. This way the helper will have more places to go to help you.



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