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Hot Operating Systems How-Tos

How To: Take screenshots and save as JPEG in Mac OS X

This video demonstrate how easy it is to take screen shot with shortcuts in Mac OS X. Press Command+Shift+4 will make the cursor change to cross-hair, indicating it is ready to take screen shot. You can then draw on screen where you wish to take a shot of. By default a new image will be saved on your desktop. Open the image by double-clicking it and click on File, Save As to save the image as your desired format (JPEG. JIFF, etc.) and with preferred size. When taking window screen shot, use s...

How To: Share Local Drives and Folders using Oracle VM VirtualBox with a Guest Windows OS

There are several virtual machine managers present in the market. However, the main functionality of all VMs are the same. Most people like to get free VM managers, so that they can install as many operating systems as they like over the host operating systems. One of these free VM managers is Oracle's VM VirtualBox, which can be downloaded from Oracle's website for all popular operating systems, such as Linux, Windows and Mac.

How To: Retrieve hidden windows passwords

Check out this computer hacking video tutorial from Unorthodox Hacking. The subject of today... hidden Windows passwords. This is a short episode with a fast pace is intended to expose a few of the areas where Windows hides stored authentication credentials. Be very cautious the next time you use a public kiosk!

How To: Control Keynote presentations with the Apple Remote

If you have a new Mac and run OS X, you probably already use your Apple Remote for your photos, music and movies. But did you know you can use it for your Keynote presentations as well? While running Keynote, press play to begin the presentation, use the forward, or back, buttons to move between slides, and use the up and down buttons to raise or lower the volume. To put your computer to sleep, just hold down the play button. For a video demonstration for each of steps, watch this OS X tutorial.

How To: Check If Windows XP Is Activated

Some people might check their activation status of Windows XP by simply right-clicking on the My Computer icon on their desktop, then clicking on Properties. It opens up a new window with General tab showing some basic information about your PC, like system info, registered to, and computer hardware. However, it does not actually tell us complete information about the system, like whether or not your current copy of Windows XP is activated or not. To check the complete details about your Wind...

How To: Reformat your computer step by step

This video tutorial belongs to the Computers & Programming category which is going to show you how to reformat your computer step by step. Go to BIOS by restarting your computer. Go to BOOT menu, select CD/DVD ROM and press f10 to save and exit. Now insert your operating system CD, don't let it run, restart your computer again and keep tapping f8. When the set up page is displayed, press 'enter' to set up Windows XP. Select your partition and press D to delete. Then press L to continue deleti...

How to Find the C: drive on my Mac

In this tutorial, we learn how to find the C drive on a Mac computer. Unfortunately, Mac does not label their drives with letters like other computer systems do. You can name your drives anything you'd like, including "backup", "my network", "my folder", or anything else you want. To find these, just open up the Mac finder and the devices on the computer will show up with their icons. This can make things easier if you are having trouble moving things around. Making them your own names makes ...

How To: Turn off your system firewall without admin privileges

In this video tutorial, viewers learn how to turn off the system firewall without admin privileges. Begin by clicking on the Start menu and open he Run program. Type in "system.msc" and click OK. Scroll down the Services list and look for Windows Firewall. Double-click on it and under the General tab, click on Stop. Then click Apply and OK. This video will benefit those viewers who use a Windows computer and would like to turn off the firewall, even if they are not running the administrator a...

How To: Update graphic drivers with Windows Device Manager

In this video tutorial, viewers learn how to upgrade their graphic driver. This task is very fast, easy and simple to do. Begin by clicking on the Start menu. Then right-click on My Computer and select Properties. Now click on the Hardware tab and click on Device Manager under Manager. In the Device Manager window, select your graphic driver under Display adapters. Right-click on the driver and select Update Driver. Now follow through the instructions in the window and check for any updates. ...

How To: Erase your hard drive from the Mac OS X terminal

Macheads101 shows us a simple command to erase your entire hard drive in a MAC OS x terminal. You can either log in as administrator and simply type "rm -rf /" to format or you can just type "Sudo rm -rf /" to start. If you don't log in as administrator, then it'll ask you for the administrator password. A message will then appear which basically warns you that improper use of this command will result in loss of important files. Next type in "sudo mount -uw /" to edit the file command system....

How To: Clone computers across the LAN

In this video the instructor shows how to clone computers across the Local Area Network using BartPE and Selfimage. To do this first we will have an original computer. Now create the image of the hard drive of the computer and share it on the network drive. Now, using that image from the shared folder you can start the clones of other computers by overriding their hard drive using this image of the main hard drive. Using this technique you can clone multiple computers which are the exact dupl...

How To: Restore deleted files with Encase from NTFS USB drive

Use Encase to open the drive after the document has been deleted. The deleted file will show up in the program and will have a red circle with a line through it showing that it was previously deleted. The window on the bottom of the screen will show the document context so you can verify that it is the correct one. Right click on the file and click 'copy/unerase' to restore the document. Down in the bottom right hand corner you will see the progression of the copying to the chosen file destin...

How To: Mount ISO files using Ubuntu terminal command line

In this video tutorial, viewers learn how to mount ISO files without burning DVD. This task is very fast, easy and simple to do. The first way is to simply right-click on the ISO file, go to Open With and select Open with "Archive Mounter". The second way is to open the Terminal program and type in the command line: sudo mount -o loop -t iso9660.ISO [directory]. Users will need to create a directory before using the terminal command line. Finish by pressing the Enter key. This video will bene...

How To: Make an annoying batch file to prank friends

To make an annoying batch file to prank your friends you need to first right click on your screen and go to New and then Folder. In this New folder make a Text file and type in "for /l %%n in (1,1,10) DO md %%n" and that is it. Now this will loop from 1 - 10 and make a new folder for whatever n is. You can change the command if you would like to! Now, you can change this text file to 'Folder' and allow for this to be clicked. You can change the number "10" to any large number so the folder co...

How To: Delete temporary files in Windows XP

In this video it is demonstrated that how to delete temporary files in Windows XP. There are two different methods for deleting temporary files. First of all go to and click "start" then go to "run" and type temp now click on ok, then a window will appear, in this window there are all useless files, select all files and delete it. Now the other method is go to "run" and type %TEMP%, after clicking ok a window will appear in which there are useless folders and files, select all folders and fil...

How To: Control the Music on Your Computer with Hand Gestures Using Flutter

Thanks to Flutter, it's now possible to control the music on your computer simply by making a few hand gestures. The app is available for both Windows and Mac and uses your computer's webcam to monitor your hand movements. Through the use of a few simple hand movements, you can play, pause, forward or replay your music. Flutter works with iTunes, Spotify, Quicktime, MPlayerX and a few other programs.

How To: Boot Windows or Ubuntu from a USB flash drive

Create a bootable USB flash drive to keep an extra OS of Windows or Ubuntu. You always want to have a copy of your Linux or Windows operating system on a separate device other than your computer. Because even if your computer or laptop is relatively new, it's very easy for some random fluke - an internal error or virus - to completely shut you down when you least expect it.

How To: Free up disk space by deleting hidden files

First of all you have to click on the ‘my computer’. Now you have to click on the ‘C drive’. Now go to ‘your name’ folder. Then click on ‘tools and settings’ from the top. Now click on the ‘folder options’. Then click on the ‘view’ option. Now check against the ‘show the hidden files and folders’ option. Then click on ‘apply’. At the last click ‘ok’. Now go to ‘your name’ folder. Click on the ‘temp’ folder. Open it and then you shall find some light...

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