Lenovo Q190 Lenovo IdeaCentre Q190 Series User Guide - Page 30

Troubleshooting problems with Hard Disks 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, a nominal capacity of 1GB is 1000MB, while the actual capacity of 1GB is 1024MB). The capacity of the hard disk shown in Windows can be worked out according to the calculations in the following example: The nominal capacity of the hard disk is 40GB, while its actual capacity should be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37GB. If the Service partition of 3GB - 3 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 2.79GB 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. Special considerations for troubleshooting Windows Record the following information that may be useful later when troubleshooting system problems: The drivers for this computer model support Windows 8.1 systems. User Guide 25