Chapter 6 Protecting Your Files. Protecting Your Files FAQs: – What should I know about losing...

Chapter 6Protecting Your Files

Protecting Your Files

• FAQs:– What should I know about losing data?– How can I protect my files from viruses?– How do I protect files I’m working with?– How do I use Backup and Restore?– When should I make a system repair disc?– What’s a simple and dependable backup plan?

2Practical PC 5th Edition Chapter 6

What should I know about losing data?

• There are many ways to lose data– Hardware failures, human errors, fires & floods– A corrupted file is a file that has been damaged in some

way– Computer viruses and worms can alter data– Head crash is when the read/write head crashes into the

disk surface• Become familiar with tools to protect and restore data


What should I know about losing data?


How do I protect my files from viruses?

• A virus is a small computer program that can replicate itself and do damage

• A worm can spread from computer to computer and allows hackers access to your computer

• Antivirus software works in the background scanning and watching for virus signatures– A virus signature is a series of unique bytes that identify a

virus– If a virus slips through it can sometimes be removed, but

not always– Your final protection against viruses is regular backups


How do I protect my files from viruses?


How do I protect the files I’m working with?

• Many applications offer an autosave option that automatically makes copies of files as you are working with them– Make sure this feature is activated– Most applications that autosave files can sense when a file

has become corrupted• Manually copy important files to another storage medium

– Manual backup


How do I protect the files I’m working with?


How do I use Backup and Restore?

• A backup is a collection of files copied as a precaution against data loss

• Backup software automates the process of copying data and program files that can be retrieved to replace damaged or lost files– Windows 7 includes Backup and Restore

• The first time you create a backup, choose the Set up backup option and specify when you want backups to take place



• Backups combine and compress files• Retrieving files from a backup is usually referred to as the

restore process• A system image is an exact copy of all the files stored on the

drive– Used to restore your entire computer

• You can restore selected files or the entire computer


When should I make a system repair disc?

• System repair disks will boot your computer from the CD/DVD drive or USB flash drive

• The best time to make a system repair disc is when you first set up your computer

• To use a system repair disc, insert it in the DVD drive while the computer is turned off, turn on the computer, press F12 to get the boot manager, and boot from the DVD drive


When should I make a system repair disc?


What’s a simple and dependable backup plan?

• Follow these four steps:– Make a system repair disc– Make weekly backups– Activate autosave– Make copies of important files


What’s a simple and dependable backup plan?


Hardware: Safety equipment

• Treat your computer with care to prevent it from physical damage

• A power spike is a short duration change in voltage, current, or energy– A power surge is a slightly lower voltage than a power

surge, but lasts longer• A surge protector maintains safe voltage levels by filtering out

surges and spikes



• A UPS stores power in its battery in case of a power failure– Important for desktop computers– Normally not needed for portable computers– The length of time a device continues to run on UPS power

varies



• Most computers include a built-in fan designed to keep circuitry at a safe operating temperature– Continual operation at high temperatures can reduce the

life expectancy of a computer– A notebook chill mat contains one or more fans designed

to increase air flow to a computer placed above them• Keep your computer in a safe place to prevent theft and

vandalism


What about a “good” virus?

• What do you think?– Have you ever used a computer that had a virus or worm?– Have you ever lost a file because of a virus or worm?– Do you think the benefits of “good” viruses outweigh their

risks?


Chapter 6 Protecting Your Files. Protecting Your Files FAQs: – What should I know about losing...

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