hard disk keeps all of your data which you want to store them for a long time
it will not effect your system speed very much and it comes in two types:
ATA and SATA/SATA2 and SATA2 is much faster and better
Xero T
2008-09-21 22:06:38 UTC
The hard disc is long term storage which holds all your data such as the Operating System, programs and any data you put on it, it's a device all computers need to run an OS on
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