Troubleshooting Booting Problem

How to restore Grub on Redhat Linux.

1. Boot from RHEL6 DVD.
2. Select “Rescue installed system”.
3. Choose -> Language, Keyboard, and Rescue Method. Select “Local CD\DVD” for the Rescue Method.
4. Setup Networking -> Yes or No, doesn’t matter for restoring Grub.
5. Next on the “Rescue Screen”, select Continue and OK twice.
6. Next on the “First Aid Kit quickstart menu”, select “shell Start shell”.
The prompt will start:
Starting shell…
bash-4.1#
7. Type: “chroot /mnt/sysimage”
8. Type: “cd /boot/grub”
9. Type: “fdisk -l” to see where hd0.
10. Restore Grub, type: “grub-install /dev/sda1”
If No error, it should display:
# this device map was generated by anaconda
(hd0) /dev/sda

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How to Install VMware Workstation and Create a Virtual Machine on Your PC

                  Difference between VMware Workstation and Server

Most of the people doesn't know about the difference between VMware Server and VMware workstation. Here I am putting some basic differences. Hope it may help you.

1. Run As Service – this is a biggest difference between both. Server runs as a background service and Workstation runs as a standard desktop application. Workstation provides better interactive performance but Server is better suited for multi user server consolidation scenarios. It tends to make Workstation better development platform and Server a better production platform.
   
   
2. Multiple-user Access – Only one user can access Workstation at a time previously but now you can access both server and client in multi user mode. VMware VSphere Client can be used for this purpose.
   
   
3. Snapshots – It is a feature that lets you capture a point-in-time image of VM. You can use that image to roll the VM back to that captured state. The snapshot is not a complete copy of VM. It captures only the changes to the VM image. Both Workstation and Server support basic snapshots.
   
   
4. Multiple Snapshots – Server supports only a single snapshot while Workstation supports multiple snapshot as well as providing a snapshot manager that lets you easily view and manage the available snapshots.
   
   
5. VM Cloning – Its advanced feature supported by Workstation but not available in Server. It allows you quickly copy a VM. A snapshot requires the presence of the base image, but you can use the cloning feature to create a completely new and independent VM.
   
   
6. VM Teams – Another advanced feature that’s supported in Workstation but not in Server is VM Teams. It lets you manage multiple VMs as a group.
   
   
7. Host-guest drag-and-drop – It lets you drag objects from the desktop or Windows Explorer from the host to a guest VM. Workstation supports this feature while Server not.
   
   
8. VM movie capture – Workstation’s movie capture feature lets you record all of the activity in a VM and save it as an AVI file. Server doesn’t support movie capture.

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Employ the hottest hotkeys in Windows 8

In these key combinations, hold down the Windows key (normally located between Alt and Ctrl) and another key, as described on this list.

• Press the Windows key to enter the tiled Start screen.
• The Windows key + M minimizes everything that's showing on the desktop.
• The Windows key + E opens Explorer for quick access to folders.
• On the Start screen, press the Windows key + D to instantly get to the desktop.
• The Windows key + Tab opens a list of currently running programs.
• The Windows key + Print Screen takes a screenshot and saves it in a Screenshots folder nested in your Pictures folder. 
• To take a screenshot on a Windows 8 tablet, simultaneously press the Windows button and the volume-down button on the tablet chassis.
• The Windows key + Q opens a global search menu. Type what you're looking for and where you would like to look.
• The Windows key + W opens a search in your system settings to quickly locate and change system properties.
• The Windows key + F opens a file and folder search.
• The Windows key + Pause opens the system properties page to show you a quick rundown of your specs.
• The Windows key + "," (that's the comma sign!) makes all current windows transparent, giving you a peek at the desktop as long as you hold down the Windows key.
• The Windows key + "." (the period) snaps a window to the right or left side (toggling each time you press ".").
• The Windows key + R prompts the Run command—useful for quickly launching apps and other routines with a command prompt.
• The Windows key + X opens the Quick Access Menu, exposing system functionality such as the Command Prompt, Disk Management, File Explorer, Run, and more. Alternatively, you can right-click on the bottom right corner of the screen to spawn the Quick Access Menu.
• The Windows key + I opens the settings menu, giving you quick access to the Control Panel, Personalization, and your Power button, among other features.
• The Windows key + O locks orientation on devices with an accelerometer.

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Record Your Activities in Windows 7

 

Problem Steps Recorder

       

Windows 7 ships with a utility that records the steps you’ve taken on the computer automatically including mouse clicks. You can use these recordings to speed up issues when you’re dealing with tech support.
Use the previously mentioned Win+R combo to bring up the run dialog and type in psr. Just click on the bright red button to get started with recording your steps.


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Open Your Favourite Application Fast

 Create a custom keyboard shortcut for the application.

Now you can launch your favorite applications through custom shortcuts. So that you don't want to search for the application Let me show you how, it’s easy.

As an example here i am going to create shortcut for  Adobe Reader.Follow the same steps to create shortcut for any of the application.

Step 1: Click on Start button

Step 2: Right Click on the application to create shortcut.

Step 3: Select the Shortcut tab and click any character. In my example I have pressed K. Click Apply and OK. So that , when I press Cntrl + Alt + K, the application Adobe Reader will be opened.

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Top 10 Web Browsers

A browser is a software application for retrieving, presenting and traversing information resources on the World Wide Web.Here the following are the top 10 web browsers available now.

1. Mozilla Firefox

2. Google Chrome

3. Internet Explorer

4.Opera

5. Safari

6. Rockmelt

7. Maxthon

8. SeaMonkey

9. Deepnet Explorer

10. Avant Browser

Video card buying tips

               

Purchasing a computer video card can sometimes be a very confusing and frustrating task. Before purchasing a video card, keep the below recommendations in mind.

Connection

1. PCI-E or PCI-Express  is the latest computer bus found in computers. PCI Express is designed to replace PCI and AGP and is available in several different formats: x1, x2, x4, x8, x12, x16 and x32. See the PCI Express definition for a full description and related links.

                                  

2. AGP or Advanced Graphics Port, It is something old technology.Now a days no modern motherboards come with this type of port. AGP has a direct line to the computer memory, which allows 3-D elements to be stored in the system memory instead of the video memory and is available in three different standards (1.0, 2.0, and 3.0). 

                                 

3. PCI or Peripheral Component Interconnect, it also was an old type of technology first introduced in 1992. Now days no modern high end graphic devises come with type of port. 

                                             

Other considerations

Ports : check your monitor port they are different. Remember to buy a graphic card which matches with the port on your monitor.

For example if your monitor has a VGA port, to connect with your graphic card you need the same port on your graphic card also.

Chipset - There are dozens of different video card manufacturers. However, there are only two major chipset manufacturers; Nvidiaand ATI. Although both are great manufacturers there can be great big differences between the two as far as performance. Before buying any video card it's a good idea to look up a hardware review on the video card before purchasing it if you're concerned about it's performance.

Size - If you have a smaller computer case fitting some of the new video cards in the computer many not be possible. Video cards today are much larger than older video cards because of their increased capabilities and need for cooling fans. Make sure your case is going to have room for a new video card. The only way to do this is to open the case and physically look.

Warranty - How long is the warranty and what does it cover.

Price range

The price range can vary depending on the brand of video card, amount of memory, the interface used, and other available options.

Where to purchase

For best price we often recommend that users purchase all computer hardware online. You'll be able to look at other customer reviews and get a much lower price. If you're uncomfortable buying online or want to talk to a sales rep you can always visit a local retail store and then buy online.

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