Sony VAIO PCV-RX490TV - Manual (Page 87)

Defragmenting your Hard Disk Drive
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Defragmenting your Hard Disk Drive
If you encounter frame dropping while recording digital video onto your hard
disk drive, defragmentation may be necessary.
To defragment your hard disk drive
1 Deactivate your screen saver, if applicable.
2 From the Start menu, point to Programs, point to Accessories, point to
System Tools, and then click on Disk Defragmenter.
3 Run Disk Defragmenter.
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It may take more than a couple of hours to complete defragmentation, depending on
the data capacity and utilization of your computer’s hard disk drive(s).