The mysterious concept of Live CD is not familiar to everyone. And in vain! In some cases, Live CD can literally save the user and his files.
A Live CD is an operating system disc that starts immediately. Actually, the Live CD contains an image of the system recorded on the disc. By inserting such a CD or DVD into the drive, you can immediately work in a familiar environment, without installing it on your computer.
But do not delude yourself that, having a Live CD, you can not install the OS on your computer or laptop. Things are a little more complicated. The fact is that you will have to limit yourself only to the software that is already in the existing system, you will not be able to install a new one, because all the files are recorded on the disk. For the same reason, it will not be possible to save the created files in the usual folders "My Documents", "Desktop" and the like.
It is also important to remember that the speed of loading the OS and accessing files on the disk (that is, launching some preinstalled programs) will be slower than that of the same system, but installed on the ROM (hard disk). But this is compensated by the higher speed of the system itself, due to the fact that it is copied into the PC's RAM.
There are undoubted advantages to working with Live CD. The first of the advantages of such a disk is the ability to run a familiar OS on almost any PC, work with familiar software (by the way, the created files can be saved to a connected USB flash drive). Another undoubted advantage is that the Live CD makes it possible to quickly access the user's files if the operating system on the PC is damaged by the user or by a virus. Having booted from the Live CD, you can also not only "extract" necessary and important files, but also delete dangerous, unnecessary ones.
Another opportunity that Live CD gives is to familiarize yourself with an unfamiliar OS without installing it on a PC.
for most users, the so-called anti-virus Live CDs will be especially useful. When creating them, the developers did everything to make it easy for an ordinary user to clean the computer from viruses. Such a Live CD can be found on the websites of the largest anti-virus software developers. But do not download and burn such a disc in reserve. The most useful will be the latest release, with the most recent databases.
An example of an OS desktop from a Live CD of a well-known antivirus manufacturer:
