Steps to rectify the Corrupted MBR on RHEL 5 & 6

-

Restore MBR in Linux


Boot into the Rescue mode.
boot:linux rescue
Select language, keyboard and skip finding the installation
Make a temporary mount point /vxvm and mount the root partition on it.
mkdir /vxvm
mount -t ext3 /dev/sda1 /vxvm [ where /dev/sda1 is the root partition ]
If the disk has a separate boot partition mount it on /vxvm/boot
mount -t ext3 /dev/sda2 /vxvm/boot [where /dev/sda2 is the boot partition]
Recreate the master boot record (MBR) on the root disk.
For the GRUB boot loader :
Check contents of /boot/grub/menu.lst or /boot/grub/grub.conf or /etc/grub.conf are correct
Use the /vxvm/sbin/grub command to enter into the grub menu to recreate the MBR on the disk
# /vxvm/sbin/grub
grub> root (hd0,1)
grub> setup (hd0)
grub> quit

Comments

Post a Comment

Popular posts from this blog

[SOLVED]* Please wait for the system Event Notification service

-
Image
There are different ways to solve this issue , Few of them are mentioned below .A permanent fix for this issue is yet to find. Solution : 1 Remove "Windows Live Messenger" from their terminal server resolved logout issues. Solution : 2 Start "Remote Desktop Services Manager" Identify the user ID in the Users tab In the Processes tab sort by ID Go down to the user ID and end the winlogon.exe process the user session will be logged off Solution : 3 From: mikefrobbins.com by graham ross From a command prompt on my PC or another computer on the domain I ran this to find out the PID of the svchost.exe associated with SENS sc \servername queryex SENS Note down the PID of that process and kill that process using PID. taskkill /S servername /PID xxxx /F Solution: 4 From : Windows Sever Forum The COM+ Event System timed out attempting to fire the Logoff method on event class {D5978650-5B9F-11D1-8DD2-00AA004ABD5E} for publisher and subscriber . The subscriber failed
Read more

Rebuild the initial ramdisk image in Red Hat Enterprise Linux

-
How to rebuild the initial ramdisk image in Red Hat Enterprise Linux  SOLUTION VERIFIED  - Updated  April 12 2016 at 10:15 AM  -  English  Environment Red Hat Enterprise Linux (RHEL) 3 Red Hat Enterprise Linux (RHEL) 4 Red Hat Enterprise Linux (RHEL) 5 Red Hat Enterprise Linux (RHEL) 6 Red Hat Enterprise Linux (RHEL) 7 initrd / initramfs image Issue How to rebuild the initial ramdisk image in Red Hat Enterprise Linux How to remake or recreate the initrd or initramfs The  /etc/lvm/lvm.conf  and root file system resides on a logical volume. How to ensure the changes are applied upon rebooting? The  /etc/multipath.conf  and my root file system resides on a multipath device. How to ensure the changes are applied upon rebooting? The module options in  /etc/modprobe.conf  or  /etc/modprobe.d/  have been modified. How to ensure the changes are applied upon rebooting? Resolution When adding new hardware to a system, or after changing configuration files that may be
Read more

Python reference Interview questions

-
1)HCL Python scripting developer Interview questions:- 1) How do you check list of files in the given path in python ?? 2) How do you check whether file is exist or not in python 3) How do you perform copy file cmd in python ?? 4) What is d use of setup.py in python 5) What is d use of __init__=__main__: condition in python?? 6) What is d type of *args and **kargs ?? 7) sys.path use in python ??   2) CES Limited Python developer Interview Face2Face Interview questions:- 1.Basic questions on oops:   *.Implement Base class using Instance, static and Abstract method     instance method - takes two arguments to add operation     static method - takes two args to multiply operation     abstract method - takes two args to div operation   *. Implement child class using 3 instance methods     instance - takes three args for add operation     instance - takes two args for multiplicatio operation     instance - takes two args for div opration     create a
Read more