If you're referring to a 800gb hard drive then you should be able to record quite a few hours depending on how many cameras you have set up and how good of quality.If you're talking 800mB then not long. A few minutes.
Your X-Box should record every thing automatically although if you don't have a hard drive then it wont work you need a hard drive to record videos.
The first sector on the Hard Drive
yes, because of same master and slave combination.
No, you don't need a special hard drive to record onto a CD. Any standard hard drive can store the files you want to burn to a CD. However, you do need a CD burner or optical drive that supports writing to CDs, along with compatible software to facilitate the burning process.
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Boot virus
There is the Master Boot Record and a Primary Partition in which can be formatted in NTFS or FAT32. There is also what is called platters on the hard drive which has two sides divided up into what looks like a record -- called tracks, and each track is divided into sectors.
That depends on the size of the hard drive in the unit.
true.
true.
Recorders with hard drives operate similarly to regular recorders, only that they convert the sound and/or video into a digital format and record the digital format to the hard drive. They operate the hard drive similarly to how a PC would use it. They might use hard drives that don't have error correction to improve the speed.