August,2012

1. What Disks and Files You Accept From Other People August,2012 Compiled By:- Solomon W. Demissie

2. Overview • How to Protect a Computer from Viruses • When should we format a Disk • What kind of Disk I Format • How do I Format my Hard Disk • How to Format a Removable Disk (Ins.) • How to Restore a deleted file on a Removable Disk (Instruction) Compiled By:- Solomon W. Demissie

3. How to Protect a Computer From Viruses • If you think your computer may be infected, take all necessary steps to clear your system and avoid infecting other computers. • Instructions • 1Be cautious about what disks and files you accept from other people. Compiled By:- Solomon W. Demissie

4. Cont… • 2Don't reuse disks that have been in other computers, don't download files from insecure sites, and don't open e-mail attachments unless you are expecting them. Be wary of messages and attachments, even from people you know, with vague subject lines and contents, such as 'Check this' or 'See these pics!!!' Compiled By:- Solomon W. Demissie

5. Cont… • 3Obtain an antivirus program to more safely share disks, download files from the Internet and open e-mail attachments. • 4If your system gets a virus, visit your virus-scan software manufacturer's Web site and install any virus updates that are available. Then run the software. The software may not be able to delete the virus, but it may be able to identify it. Compiled By:- Solomon W. Demissie

6. Cont… • 5Search the Web for information regarding your specific virus by typing the name of the virus or its associated file into a search engine, followed by the word 'virus.' For example, 'Melissa virus,' 'BubbleBoy virus,' and so on. • 6Download and install any software patches or other programs that will help you eliminate the virus. Or follow any instructions you find on deleting the virus manually. Compiled By:- Solomon W. Demissie

7. Cont… • 7Run another virus scan to make sure the virus was dealt with properly. • 8Employ extra caution when you receive attachments that end in the commonly used extensions .doc, .exe, .com, .xls or .ppt. Never open attachments that end in .vbs or .js, since a typical user would never have a reason to open these files. Compiled By:- Solomon W. Demissie

8. What Kind of Disks can I Format? • Disks capable of being formatted include hard disks and rewritable removable media (i.e. floppy disks, DVD-RW's, CD-RW's, etc.). In all these different types of disks, formatting performs the same action. Each disk has its own file system to format on. You should choose wisely which file system you will use. Compiled By:- Solomon W. Demissie

9. What is a File System? • A file system is a way for the operating system to recognize the organization and indexing of files. Without a file system, your disk is just a mere collection of raw materials that spins and nothing more. A disk cannot hold files without a filing system. One example of a file system is CDFS, the file system for Compact Disks (CD's). Compiled By:- Solomon W. Demissie

10. When Should I Format my Disk? • You should format your hard disk drive when you have experienced problems with the structure of the disk, or you want to start fresh. Keep in mind that formatting your disk means that you will lose all of the data on that disk. Compiled By:- Solomon W. Demissie

11. How do I format my Hard Disk? • In Microsoft Windows, formatting your hard disk is sometimes as easy as right-clicking the disk on My Computer and clicking "Format." However, if you want to format your system disk, you will need a bootable CD-ROM or DVD that contains file system information and a program that will format your disk without needing to boot up your disk's operating system. Usually, operating system installation disks give you the option of formatting your disk before installing the operating system. Compiled By:- Solomon W. Demissie

12. Cont.. • How Long does it Take to Format my Disk? • This is dependent on the amount of data storage of your disk, and, most importantly, the amount of space you allocated on the partition you are formatting. In other words, a 200GB disk partition will format faster than a 1TB partition. Compiled By:- Solomon W. Demissie

13. How to Format a Removable Disk • Removable disks are very versatile because you can use them to transfer and save data files much quicker. You can also easily delete data when there is a need to clear some space. Removable disks include USB flash drives and various memory cards that are used in other portable devices.  Compiled By:- Solomon W. Demissie

14. cont.. • Like ordinary hard disk drives, removable disks can get infected by viruses. This leads to the need to format the removable disk to ensure that the infection is removed. Formatting a removable disk may also be necessary to clear the entire space of the drive removing hidden files and fixing errors in the process. Compiled By:- Solomon W. Demissie

15. Instructions • 1 Fire up "My Computer" (or "Computer" in Vista/7) and then find the removable drive that you wish to format. Ensure that it is the correct drive by taking a peek at the contents to avoid accidentally formatting other drives. Right-click on the drive and click format to bring up the format dialog. Compiled By:- Solomon W. Demissie

16. Cont.. • 2 Ensure that the "File system" is FAT32 to ensure compatibility amongst other devices. You may set a "Volume label" as well to uniquely identify the device. Leaving the "Quick Format" unchecked is recommended (See Tips from the web). • 3 Click the "Start" button and confirm the message box to begin the format process. The formatting is complete after the progress meter fills up. Compiled By:- Solomon W. Demissie

17. How to Restore a Deleted File on a Removable Disk • Plenty of people have accidentally deleted an important file or folder that they realized they still needed. If you have deleted a file from a removable media source such as a USB jump drive, 3.5-inch floppy disk or rewritable CD, you might be able to retrieve it by using a file recovery program. Compiled By:- Solomon W. Demissie

18. Instructions • 1 Go to a website that offers a file recovery utility program, such as Restoration or ZAR Recovery or Recover myfile program • 2Navigate to the downloads section of the website and click on the "Download" button. Wait for your Web browser to open a new window asking what you want to do, and then click on "Save File." Compiled By:- Solomon W. Demissie

19. Cont… • 3Click on the "Start" button on the task bar at the bottom left corner of your computer's desktop. Click on the "My Computer" icon and then navigate to the folder where your downloaded files are saved. Double-click on the installation file you downloaded and follow the instructions that will appear on the screen to install the file recovery program. Compiled By:- Solomon W. Demissie

20. Cont… • 4Connect the removable disk to your computer by placing it in the USB drive, floppy disk drive or CD drive. Double-click on the desktop icon for the file recovery program. Choose the location of the removable disk's drive from the drop-down menu. Click on the "Search Deleted Files" button. Compiled By:- Solomon W. Demissie

21. Cont… • 5Wait for the program to populate a list of the most recently deleted files. Click on the individual file you want to restore, and then click the "Restore" button. Repeat the process for any additional files you need to restore from the same location. Compiled By:- Solomon W. Demissie

22. Finally • Question and Feedback You welcome Compiled By:- Solomon W. Demissie

23. Tank you Compiled By:- Solomon W. Demissie