Lenovo H415 Manuale d'uso - Pagina 32

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

the nominal capacity.

Troubleshooting and problem resolution: For computers equipped with the

OneKey Recovery feature, the system recovery feature needs to occupy some

hard disk space. This may account for the apparent hard disk capacity deficit.

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

expressed in the decimal system, 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.

4.5 Special considerations for troubleshooting Windows

Record the following information that may later be useful in troubleshooting system

problems:

1. The serial number of the software. The serial number was shipped with the

computer and was provided separately by the manufacturer. The Help Center is

unable to retrieve this number.

2. The drivers for this computer model only support the Windows 7 system.

3. When you use the Windows Media Center to watch TV, be particularly attentive

to the following:

• In the following two situations, you must re-save a channel list:

a. When you change your TV signal from digital to analog, your saved

channel list for digital TV is deleted. When you want to watch digital TV

again, you must create and save a new channel list.

b. When you change your TV signal from analog to digital, your saved

channel list for analog TV is deleted. When you want to watch analog TV

again, you must create and save a new channel list.

User Guide