Lenovo N300 All-In-One Lenovo Bedienungsanleitung PDF herunterladen (Seite 17)

User Guide

Troubleshooting Problems Hard Disks

Problem: The capacity of the hard disk, as indicated by the system, is less than

the nominal capacity.

Further Technical Explanation: The nominal capacity of the hard disk is

expressed in the decimal system as 1000 bytes. But the actual hard disk capacity

is expressed in the binary system as 1024 bytes (For example, the nominal

capacity 1G is 1000M, while the actual capacity 1G is 1024M).

The capacity of the hard disk shown in Windows can be calculated according to

the calculations in the following example:

The nominal capacity of the hard disk is 40G, while its actual capacity should

be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37G.

If the Service partition of 3G - 3 x 1000 x 1000 x 1000/(1024 x 1024 x 1024)

= 2.79G is subtracted, the capacity of the hard disk shown in the system can

be obtained.

The capacity of the hard disk as calculated using this method may be slightly

different from the actual capacity due to the rounding of totals.

Performing Daily Maintenance Tasks

Cleaning the computer components

Because many of the computer components consist of sophisticated integrated

circuit boards, it is very important to periodically clean the computer to prevent

dust buildup. The cleaning supplies you need to clean the components include:

a vacuum cleaner, a soft cotton cloth, pure water (preferably puriﬁed or distilled

water) and cotton swabs.

Attention: Before you clean your computer, disconnect the computer

from the electrical outlet. Clean your computer with a soft cloth

dampened with water. Do not use liquid or aerosol cleaners, which may

contain ﬂammable substances.

Note: To avoid damaging the computer or display, do not spray cleaning

solution directly onto the display. Only use products speciﬁcally designed

for cleaning displays, and follow the instructions included with the product.

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Lenovo N300 All-In-One Lenovo Bedienungsanleitung Seite 17