If your taking about installing an OS, you will definitely need hard drive. But for storing files, you can always use Removable Devices, USB Flash Drive or CD-Rs.
no you dont
you can delete it by transferring it to an extrenal hard drive, I believe.
you dont
All computers use a hard drive to store programs and files.
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i dont think you can Answer Flash drives are used as portable memory--like a floppy disk or a CD that you write to. You cannot use them to run a program. For that, you need the CPU.
no, you dont need a hard drive to play a 360.but you can get one for extra memory that is what i'd do.
Information is written, and read from the hard drive.
Yes. Most browsers cache images on the hard drive.
It uses Hard Drive
you dont have to buy a hard drive if you dont want to. But if your going to keep buying memory cards, it would be cheaper to buy a hard drive, since memory cards are about $50 each.
There are videos on youtube which tell you how to convert your old hard drive into a new hard drive.