Lenovo Q190 IdeaCentre Q190 User Guide (Linux) - Page 15

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. 10 User Guide