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Archived from the original on March 9, With the introduction of inexpensive read-write storage, read-write floppy disks and hard disks were used as boot media. Archived from the original on Siduction [Desktop] [OS Installation] Thus, instructors have to teach obsolete knowledge from outdated systems with computers that are so slow that their efficiency is decreased drastically and the student motivation is negatively impacted. BeleniX [Desktop] The resulting environment can be quite rich:

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Live (bootable) Linux CDs

Initially a read-only medium such as punched tape or punched cards was used for initial program load. With the introduction of inexpensive read-write storage, read-write floppy disks and hard disks were used as boot media. After the introduction of the audio compact disc , it was adapted for use as a medium for storing and distributing large amounts of computer data. This data may also include application and operating-system software, sometimes packaged and archived in compressed formats.

Later, it was seen to be convenient and useful to boot the computer directly from compact disc, often with a minimal working system to install a full system onto a hard drive. While there are read-write optical discs, either mass-produced read-only discs or write-once discs were used for this purpose. The first Compact Disc drives on personal computers were generally much too slow to run complex operating systems; computers were not designed to boot from an optical disc.

When operating systems came to be distributed on compact discs, either a boot floppy or the CD itself would boot specifically, and only, to install onto a hard drive. Although early developers and users of distributions built on top of the Linux kernel so it could take advantage of cheap optical disks and rapidly declining prices of CD drives for personal computers, the Linux distribution CDs or "distros" were generally treated as a collection of installation packages that must first be permanently installed to hard disks on the target machine.

However, in the case of these distributions built on top of the Linux kernel, the free operating system was meeting resistance in the consumer market because of the perceived difficulty, effort, and risk involved in installing an additional partition on the hard disk, in parallel with an existing operating system installation.

DemoLinux , released in , was the first Linux distribution specially designed as a live CD. The Linuxcare bootable business card , first released in , was the first Live CD to focus on system administration, and the first to be distributed in the bootable business card form factor.

As of [update] , Finnix first released in is the oldest Live CD still in production. Knoppix , a Debian -derived Linux distribution, was released in , and found popularity as both a rescue disk system and as a primary distribution in its own right. Since , the popularity of live CDs has increased substantially, partly due to Linux Live scripts and remastersys , which made it very easy to build customized live systems.

Most of the popular Linux distributions now include a live CD variant, which in some cases is also the preferred installation medium. Live CDs are made for many different uses.

Some are designed to demonstrate or "test drive" a particular operating system usually Linux or another free or open source operating system.

Software can be tested, or run for a particular single use, without interfering with system setup. Data on a system which is not functioning normally due to operating system and software issues can be made available; for example, data can be recovered from a machine with an active virus infection without the virus process being active and causing more damage, and the virus can be removed with its defences against removal bypassed. Although some live CDs can load into memory to free the optical drive for other uses, loading the data from a CD-ROM is still slower than a typical hard drive boot, so this is rarely the default with large live CD images, but for smaller live CD images loading the filesystem directly into RAM can provide a significant performance boost, as RAM is much faster than a hard drive, and uses less power.

Some live CDs can save user-created files in a Windows partition, a USB drive, a network drive, or other accessible media.

Live backup CDs can create an image of drives, and back up files, without problems due to open files and inconsistent sets. Several live CDs are dedicated to specific type of applications according to the requirements of thematic user communities. These CDs are tailored to the needs of the applications in subject including general knowledge, tutorial, specifications and trial data too.

Some of these topics covers sub topics, e. IT administration breaks down to firewall, rescue, security, etc. In some cases a particular Live DVD covers more than one topic. Packaging a software appliance as an installable live CD, or live ISO, can often be beneficial as a single image can run on both real hardware and on most types of virtual machines. This allows developers to avoid the complexities involved in supporting multiple incompatible virtual machine images formats and focus on the lowest common denominator instead.

Typically after booting the machine from the live CD, the appliance either runs in non-persistent demo mode or installs itself, at the user's request, to an available storage device. Later versions of Windows i. Windows 8 and later , and software available for earlier versions, allow an ISO to be mounted as a volume. After mounting the live CD's filesystem, software on the live CD can be run directly, without booting it, by chrooting into the mounted filesystem.

Special tools can automate this process. During live CD initialization, a user typically may resort to using one or more boot codes to change the booting behavior. These vary from distribution to distribution but can most often be accessed upon first boot screen by one of the function keys. Some live CDs come with an installation utility launchable from a desktop icon that can optionally install the system on a hard drive or USB flash drive.

Live CDs are usually distributed on read-only media, requiring either copying to rewriteable media i. Many Live CDs are available as. Here are some popular Linux distros:. On PC's normally pressing the F12 key will bring up the boot options menu from which you can choose to boot from CD-Rom. On Mac computers holding down the letter C will boot from the CD. Some makes of computers have a different key for bringing up the boot options menu, in this case the appropriate key should be displayed during the start-up loading screen.

Once you've selected to boot from the CD the Live CD should load and depending on the distro a menu with options to try out or install the distro.

Select the option to try out the system and it should load. Pages Operating Systems Linux - Home. Last modified by Richard Pitzeruse on Feb 19, Be Careful Live CDs for testing out Linux distros usually have the option to install that distro as well.

Burning the .iso to a CD/DVD

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A live USB is a USB flash drive or external hard disk drive containing a full operating system that can be booted. Although they are closely related to live CDs in that they can be used in embedded systems for system administration, data recovery, or test driving, live USBs can persistently save settings and install software packages on the. The most popular Live Operating Systems out there today are Fedora, Ubuntu, and Kali Linux, all of which have their own Live versions which can be used to create bootable discs and drives. So, to make a live OS USB or CD;. live operating system free download - Operating System, The LoseThos Operating System, IVOS (Intelligent Voice Operating System), and many more programs.