Linux server cannot start

Boot to a USB stick with LINUX on it and then you can run diagnostics and eliminate or confirm whether problem is a hosed LINUX kernel or problem with hardware.

Which Disk set you are usings to boot, also had this ever work before?

Prashantmona,

Yes it were working before, the disks that has the operating system is the two mirrored in RAID1 array.

What Linux distribution?

When the Grub boot menu shows, have you tried a previous kernel version to boot from? Maybe an upgrade has broken something, and a previous version may still work.

What changed, and surely you have some event logs, screen shots, or something else.  There simply isn't enough information to go on so really nothing can be eliminated from a bad memory chip to a munged data file or a perfectly good binary with incorrect permissions.

We'll never get to the bottom w/o more information ... unless you're just willing to try everything that it could possibly be, one at a time, over the next gazilion years.

rindi

My experience in Linux is not too much, will you please help on how to boot from previous kernel.

When you boot the system, you should have a Grub boot menu where you can select different options to boot from. Here you should have a list of different kernels, and you can scroll to the one you want to boot from. Sometimes if you don't have that boot selection when starting to bootup, you may have to press "ESC" to get to the menu selections.

I cannot get GRUB Boot menu.

What distribution are you using? What are the first messages you get on the screen after the PC has gone through post? Have you pressed ESC several times right after post?

It is Oracle Linux, the message is Panic system cannot start.

I've seen system panic on boot up before ... it was a motherboard failure. If you have some equipment that can test your motherboard, do so.  Otherwise I suggest taking the computer to a PC shop that has the equipment to test the motherboard and possibly replace it if necessary.

There isn't any magic software that can fix this.  You need hardware diagnostics and hardware that can test other hardware.

I mean before the panic. There must be messages on display before that.