Substrate, oxide layer, coating layer, detail, laser beam, optical head, linear encoder, detector, laser diode, linear motor, and a disk—these are the parts of the so-called optical disk information storage system.
This system’s purpose is to copy solid state burned up data to the disk for storage purposes. The laser is used to read and interpret the data. A mirrored laser beam is transformed to electric waves and the said waves replicate the original data. The linear encoder and the motor inside make recovery and copying of files possible. Optical disk is indeed a new wave of technological advancement.
You have a nice, decent sized 20GB hard drive in your new iMac… but you notice that only 10GB is left! Yes, you did install a number of programs- but not 10GB worth. Or you may have an old Performa with a 1GB hard drive and find you only have 50MB left.
What happened to all that space? Well, the truth is that you probably have many duplicate files on your hard drive. How many? It’s hard to say, but there are a few common things to look for.
Almost every application installs a copy to make sure that you can read the included “ReadMe” file. You probably don’t even use the one copy of SimpleText that came installed on your computer! Use Find File or Sherlock to search for “SimpleText” and delete all but one copy.
If you’re looking at p0rn on the WWW, then you don’t need to be quite as wary since the material (probably) won’t be stored in an obvious form on the computer for more than a few weeks (unless your browser cache is set to be huge). First make sure you’re not using a public or semipublic machine, because someone may have installed a key logging program, and you don’t want to get caught sticky handed do you?
Also make sure that when you go to a site, don’t just type the address in the Address bar. That may add it to AutoComplete lists (admittedly, these can be flushed, but still) or it may be appended to the dropdown list. To circumvent this, get out a compiler and take advantage of the fact that your browser can load a website as a command line parameter.
Do you have a washing machine at home? How about those antique sewing machines with pedals? They’re big, right? They take up so much space that you want to buy a smaller one.
How about having a computer larger than these two machines combined? Can you handle that?
Before, computers were so large that a line of desks were not enough for it. In fact, a whole room was dedicated for computers alone. These computers were all analogue, processing only commands such as 1 and 0 (binary).
If computers occupied rooms, can you imagine how big hard disks were before? As big as your washing machine or sewing machine. Their capacities were only up to 20MB, but today’s hard disks are different. No matter how small they are, their capacities can reach giga or terabytes!
All your digital photographs, software programs, home videos, music, hardware drivers, documents, etc are copied to another safe location. So even if your main hard-disk runs out of service, you don’t loose any of those irreplaceable treasures.
When you are upgrading the hard-disk of your computer, you can just create a disk image of the original hard-disk and then migrate that disk image onto the new drive. You don’t have to undergo the painful process of reinstalling the OS, all the software or migrating the documents from one hard-disk to another. It’s all done by the disk imaging software.
Universal tool for hard disks! Hard Disk Manager affords everything you may need for managing hard disks; it’s suitable for both everyday and rare needs, for either inexperienced user or advanced professional. Repartitioning of hard disk. At any time you can easily and safely change partitioning of your hard disk, change parameters of partitions.
All modern and usually used file systems and operating systems are supported. Your computer’s hard disk can be divided into partitions to make it easier to manage. HD Manager allows you to change and adjust these partitions to suit your purposes. Alternatively, if you have only one partition, you can use HD Manager to split it into two or more.
NetSupport Protect is the number one choice of IT administrators and technology coordinators to protect Windows® operating systems and desktops from unwanted or malicious changes. NetSupport Protect provides a secure, reliable and productive computer environment.
With its extensive list of security features and intuitive format, IT administrators can use NetSupport Protect to guarantee that users are getting the most beneficial use of their computing experience, while safeguarding both the configuration and content on their systems. NetSupport Protect prevents users from deleting critical files and applications, making unauthorized changes to the desktop, saving or using unauthorized programs and harming the operating system.
CPRM or Content Protection for Recordable Media is a mechanism for controlling the copying, moving and deletion of digital media on a host device, such as a personal computer, or other digital player. It’s already used in specific removable media, and is now being proposed for inclusion in the ATA specification, for hard drives.
