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KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk. Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it.
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Ubuntu is a computer operating system originally based on the Debian GNU/Linux distribution and distributed as free and open source software with additional proprietary software available.
Ubuntu comes installed with a wide range of software that includes OpenOffice.org, Firefox, Empathy (Pidgin in versions before 9.10), Transmission, GIMP, and several lightweight games (such as Sudoku and chess). Additional software that is not installed by default can be downloaded and installed using the Ubuntu Software Center or the package manager Synaptic, which come pre-installed. Ubuntu allows networking ports to be closed using its firewall, with customized port selection available. End-users can install Gufw (GUI for Uncomplicated Firewall) and keep it enabled.[31] GNOME (the current default desktop) offers support for more than 46 languages. Ubuntu can also run many programs designed for Microsoft Windows (such as Microsoft Office), through Wine or using a Virtual Machine (such as VMware Workstation or VirtualBox).
Installation of Ubuntu is generally performed with the Live CD. The Ubuntu OS can be run directly from the CD (albeit with a significant performance loss), allowing a user to "test-drive" the OS for hardware compatibility and driver support. The CD also contains the Ubiquity installer,[33] which then can guide the user through the permanent installation process. CD images of all current and past versions are available for download at the Ubuntu web site. Installing from the CD requires a minimum of 256 MiB of RAM.
Users can download a disk image (.iso) of the CD, which can then either be written to a physical medium (CD or DVD), or optionally run directly from a hard drive (via UNetbootin or GRUB). Ubuntu is also available on ARM, PowerPC, SPARC, and IA-64 platforms, although none but ARM are officially supported
Wubi, which is included as an option on the Live CD, allows Ubuntu to be installed and run from within a virtual Windows loop device (as a large image file that is managed like any other Windows program via the Windows Control Panel). This method requires no partitioning of a Windows user's hard drive. Wubi also makes use of the Migration Assistant to import users' settings. It is only useful for Windows users and it also incurs a slight performance loss.
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If you have a fast internet connection you can share large files easily, but if you use dial-up connection you will not difficulties share a file with a tens megabyte/gigabyte size on internet. The only way to share large files easily you must split the file into a kilobyte or a few megabyte size.
How to split the large file into a kilobyte size? It’s easy, almost all compression software such as WINZIP, WINRAR, 7Zip, etc can be used to split a large file into a few files in kilobyte size and all the software is very easy to use.
On this tutorial I will discuss about share large file on internet if your internet connection slow. The software which I use on this tutorial is 7Zip software (you can search the software on Google :D ).
Here Two Easy Steps to Share Large File on Internet for Slow Internet Connection
1. Split the large file into few kilobytes or megabytes which you want, here how:
* On this tutorial I use 7Zip (you can use WinZip or WinRAR as alternative software). Right clicking mouse on the large file to split, on the context menu select “7-Zip” then “add to archive”

Determine file size for each file split. For example I want to split a large file into a few files with file size for each files is 1 Megabyte. Entering 1M into “Split to Volume, bytes”. Then click Ok
The result, I get a few file with 1 Megabyte size for each file. Now you can easy upload the file on online storage or on online file hosting such as Ziddu, 4Shared, MediaFire, etc. (Warning: don’t rename the files to prevent error when extract and merge them into one file)
2. How to Extract and Combine all file into one file.
If you share files that have been split, tell the software you use to split the file to the people/friend who download your files because on my experiment I getting error when combine the file using other software.
Because I use 7-Zip software to split the file which I share, so to extract and merge the file into one file I use 7-Zip again, here how:
* From windows explorer, right clicking mouse on the fist file to extract select “7-Zip” then select “Extract File” or “Extract Here” (Note: usually the order of the file name is marked with numbers)
* The result, you’ll get one large file like the source file.
I hope this post can help you to share your useful file on internet.
If you have got Wi-Fi in your laptop and have Windows 7 installed in it then you can easily turn it into a Wi-Fi hotspot and share your net connection with other people in the range and Virtual Router is the easiest way to do so.
Virtual Router is an open source software which leverages the Wireless Hosted Network API which is a part of the new Windows Operating Systems (Windows 7 and Windows server 2008).
With this feature, a Windows computer can use a single physical wireless adapter to connect as a client to a hardware access point (AP), while at the same time acting as a software AP allowing other wireless-capable devices to connect to it. This feature requires that a Hosted Network capable wireless adapter is installed in the local computer. (quoted from MS library)
The program is really simple to use. After downloading and installing the software all you have to do is specify the network name and password to access this network. It uses the WPA-2 encryption to protect the wireless network from unwanted users.
The program requires only 20mb of RAM and is pretty simple to understand and use. Requires Windows 7 or Windows server 2008 to run.
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Virtual Router Homepage
We just knew that by using Yahoo Messenger 10 there is one important bug that can be used to make someone disconnected from Yahoo Messenger. We found this tricks while we go to one of biggest Yahoo Messenger forum (you should know about it). This would be important to be resolved / fixed soon by yahoo. Here are the tricks:
Just put this code to your Yahoo Messenger Status Message (We tested in Version 10)
ymsgr:-kill View My Webcam
You can also change the View My Webcam text into something else. Whenever someone click your Status Message link, it would make him/her disconnected in a second (very fast indeed): Yahoo Messenger Crash / Shutdown Automatically.
Another Status Message that would make someone who clicked disconnect:
ymsgr:call?&&&&&&& / or add a name
ymsgr:getplugin?&type=4&id=jammer&name=&&&&&&&&&&
ymsgr:chat?&&&&&&&&
Remember this bug only appears in Yahoo Messenger
(even some users said that sometimes it also works with YM Ver 9).
Source

Hello Friends, most people mailing me to give an article on a new advance bootable operating systemSo here is your new powerfull OS named Hiren's BootCD ,(HBCD) is a completely free bootable CD that contains a load of useful tools you can make use of in a variety of situations like analyzing, recovering and fixing your computer even if the primary operating system can not be booted.
It is a great resource for anyone with computer problems who is having trouble accessing the internet to download programs in an attempt to fix it. It has a multitude of tools divided into a number of categories like partitioning tools, backup, recovery and BIOS/CMOS tools to name a few.
With some simple knowledge about what is contained on the CD, you can use it to repair many problems computer like hard drive failure, virus infections, partitioning, password recovery and data recovery.
We may call it as an emergency cd which every computer technician or home user must have.
We thank and appreciate Hiren for his great BootCD. This site is just a download place for Hiren's BootCD and is not related with Hiren. For developer's homepage please visit Hiren's Homepage under the links.
Partition Tools.
If you need to make changes to the partitions on your computer, there are several applications that provides various levels of functionality for accomplishing this goal. You can both create and delete partitions from your computer, even while there are other partitions on the hard drive you are modifying. You can also resize partitions if needed, to change how much space is allocated to them.
Backup and Recovery
There are several backup and recovery tools on Hiren's BootCD. Backup tools like GetDataBack, HDD Scan, Partition Find and Mount, PhotoRec, Recuva, Undelete... let you copy data off of your hard drive and schedule automatic backups to ensure your data is saved to another location. You can also recover deleted data, whether that data was deleted intentionally or accidentally. There are also a few tools that will help you recover data from damaged or corrupted portions of your hard drive if you are unable to recover them through other methods.