Explanation of Hard Disk Capacity | Lenovo 3000 G230 manual

Lenovo G230 UG V1.0_en.book Page 3 Monday, July 28, 2008 7:29 PM

Explanation of Hard Disk Capacity

Dear user,

While using your computer, you may discover that the nominal hard disk capacity indicated is somewhat different from the disk capacity displayed by the operating system. For example, a nominal 80GB hard disk will appear as less than 80GB in the operating system. This discrepancy is not an error in hard disk installation nor any other problem, but a normal phenomenon of computers. This phenomenon is primarily due to the following reasons:

I.Different standards used by the manufacturer and operating system when calculating hard disk capacity

Hard disk manufacturers use a radix of 1000, i.e. 1G = 1,000MB, 1MB = 1,000KB, 1KB = 1,000 bytes. However, when identifying hard disk capacity, operating systems use a radix of 1024, i.e. 1GB = 1,024MB, 1MB = 1,024KB, 1KB = 1,024 bytes. The standard adopted by your computer is that of the hard disk manufacturers. Since the standards adopted by the hard disk manufacturer and operating system are different, the hard disk capacity displayed by the operating system will be different from the nominal hard disk capacity.

For example, if the hard disk is nominally X G, even when it is completely

empty, the capacity displayed by the operating system will be: X × 1000 × 1000 × 1000/ (1024 × 1024 × 1024) ≈ X × 0.931 G

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Lenovo 3000 G230 manual Explanation of Hard Disk Capacity

Contents

Lenovo 3000 G230 Lenovo G230 UG V1.0 coveren2-3 If your product is not working correctly Energy Star model information Page Explanation of Hard Disk Capacity Page Contents 130 Contents Safety, Use,Appendix A. Lenovo Limited Appendix B. Customer Top View Getting to Know Your Computer System status indicators Power buttonGetting to Know Your Computer Computer display Left-side View Fan louvers Wireless device switch Security keyhole AC power adapter jackRight-side View Speakers Front View Bottom View Battery latch spring loaded Getting to Know Your Computer Battery latch manual ƒ Wlan cards compartment „ Shutting Down Your Computer Using Your Computer„ Putting Your Computer to Sleep Using Your Computer Using the Touch Pad „ Numeric Keypad Using the Keyboard „ Function Key Combinations Fn + PrtSc/SysRq System request Touch inductive panel ~ Special Keys and Buttons„ Function buttons „ OneKey Rescue System button „ Copying files to CDs/DVDs Discs Specific model only Using the Optical Drive„ Playing CDs/DVDs Disc Media Using Memory Cards „ Removing a Memory Card Using the Integrated Camera„ Inserting a Memory Card „ Using LAN Port Using the Internet „ Using wireless LAN „ Using Modem Port Specific model only „ Attaching a Mechanical Lock Optional Securing Your Computer „ Using Passwords To Set a Supervisor Password Select Set Supervisor Password, and press the Enter key Using Your Computer To set a User Password Using Your Computer Changing or Removing the User Password To Set a Hard Disk Password Using Your Computer Hard Disk Passwords Changing or Removing the HDD Passwords Using Your Computer Installing Device Drivers „ Your Computer Batteries Using the Battery and AC Adapter „ Using the AC Adapter „ Checking Battery Status Using Your Computer „ Handling the Battery „ Charging the Battery Using Your Computer Connecting a Universal Serial Bus USB Device Using External Devices Using External Devices Connecting a PC Card Device „ Removing a PCI Express card „ Inserting a PCI Express card „ Connecting a VGA monitor Connecting an External Display Connecting a Headphone and Audio Device Connecting an External Microphone Specific model only „ Enabling Bluetooth communications Frequently Asked Questions Troubleshooting How can I contact the Customer Support Center? Troubleshooting When I turn on the computer, nothing appears on the screen Troubleshooting„ Display Problems My screen goes blank while the computer is on „ Keyboard Problems „ a Password ProblemForgot my password Number appears when you enter a letter Computer enters sleep mode unexpectedly „ Sleep or Hibernation Problems Screen is blank „ Computer Screen Problems Click the Advanced Settings button Troubleshooting Screen is unreadable or distorted Troubleshooting Incorrect characters appear on the screen Operating time for a fully charged battery is short „ Sound Problems„ Battery Problems „ a Startup Problem „ a Hard Disk Drive ProblemBattery does not charge Hard disk drive does not work Computer does not start from a device you want „ Other ProblemsYour computer does not respond Getting Help and Service Getting Help and Service Getting Help on the Web Getting Help and Service Getting Help and Service Getting Help and Service Getting Help Around the World Important Safety Information Safety, Use, and Care Information „ Conditions That Require Immediate Action Safety, Use, and Care Information „ Safety Guidelines „ Service and Upgrades „ Power Cords and Power Adapters Safety, Use, and Care Information „ Plugs and Outlets „ Extension Cords and Related Devices „ Power Supply Statement „ Lithium Coin Cell Battery Notice „ Heat and Product Ventilation Safety, Use, and Care Information „ CD and DVD Drive Safety „ Electrical Current Safety Information Safety, Use, and Care Information „ Laser Compliance Statement Safety, Use, and Care Information „ Liquid Crystal Display LCD Notice Caring Your Computer „ Be Careful about Where and How You Work Safety, Use, and Care Information Safety, Use, and Care Information „ For outdoor use „ Be Gentle with Your Computer„ Carry Your Computer Properly „ Handle Storage Media and Drives Properly „ Data Safety „ Other Important Tips „ Take Care in Setting Passwords „ Cleaning the Cover of Your Computer „ Cleaning Your Computer Keyboard „ Cleaning Your Computer Display Accessibility and Comfort „ Ergonomic Information Safety, Use, and Care Information „ Questions about Vision? Maintenance„ What If You are Traveling? „ General Tips for Maintenance Safety, Use, and Care Information Safety, Use, and Care Information „ What this Warranty Covers Appendix A. Lenovo Limited Warranty Appendix A. Lenovo Limited Warranty „ How to Obtain Warranty Service„ What Your Service Provider Will Do to Correct Problems „ Replacement of a Product or Part „ Use of Personal Information „ Your Additional Responsibilities „ What this Warranty Does not Cover 100 „ Limitation of Liability 101 „ Dispute Resolution 102 „ Other Rights„ European Economic Area EEA 103 Warranty Information 104 „ Types of Warranty ServiceCustomer Replaceable Unit CRU Service Courier or Depot Service On-site ServiceCustomer Carry-In or Mail-In Service 105 106 Product Exchange ServiceWarranty Service Telephone Numbers SMS 107 108 109 Appendix B. Customer Replaceable Units CRUs Specifications Appendix C. SpecificationsBattery pack 110 111 Appendix D. Notices Appendix D. Notices 112 113 „ Export classification notice„ Television output notice 114 Wireless related information„ Wireless Interoperability 115 „ Usage Environment and Your Health 116 117 Electronic Emissions Notices„ Federal Communications Commission FCC Statement 118 „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada 119 „ German Class B Compliance Statement 120 „ European Union Compliance Statement Class B Compliance 121 „ Japanese Vcci Class B Statement 122 „ Japan Compliance Statement for Power line Harmonics„ Korea Class B 123 Weee and Recycling Statements„ General Recycling Statement 124 EU Weee Statements 125 Japan Recycling Statements 126 „ Disposing of a Lenovo Computer Components 127 128 129 Trademarks 130 Index 131 Problems Index 132