Lenovo IdeaCentre Q190 Desktop User Manual download pdf (Page 15)

User Guide

Solving Problems

Follow these tips when troubleshooting your computer:

• Ifyouaddedorremovedapartbeforetheproblemstarted,reviewthe

installation procedures to ensure that the part is correctly installed.

• Ifaperipheraldevicedoesnotwork,ensurethatthedeviceisproperly

connected.

• Ifanerrormessageappearsonthescreen,writedowntheexactmessage.

This message may help support personnel diagnose and ﬁx the problem(s).

• Ifanerrormessageoccursinaprogram,seetheHelpdocumentofthisprogram.

Troubleshooting Problems with 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 operating system 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.

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Lenovo IdeaCentre Q190 Desktop User Manual Page 15