Q:What is the basic version CAB desktop OS?
A:The basic version CAB desktop OS (hereinafter referred to as the basic version of desktop) is targeted at the desktop application market. It is a safe and reliable desktop computer operating system with comprehensive functions, improved performance, enhanced safety and better user experience.
Q:How much hard disk space is needed to install the basic version of desktop?
A:At present, installing the basic version of desktop requires at least 7.8G of an available hard disk space. But in daily use, running the system and installing the software need more hard disk space. So please allocate the space according to the actual situation.
Q:What are the ways to install the basic version of desktop? What are the differences between installing Windows and the basic version of desktop?
A:The basic version of desktop can be installed by the DVD or USB disk. Compared with the Windows installation, the biggest difference is that the file system of the basic version of desktop must be ext2 or ext3 or ext4, but the file system of Windows is FAT32 or NTFS.
Q: Version of desktop and Windows operating system can coexist or not?
A:Yes. The basic version of desktop can perfectly coexist with Windows system. If the hard disk has the installed Windows system, it will have a dual system after installing the basic version of desktop. After starting the computer, select the system which you want to enter in the boot item.
Q:What is the difference between the partition of the basic version of desktop and the partition of the Windows system?
A:There are three kinds of hard disk partitions, the main disk partition, extended disk partition and logical partition. In the Windows system, it firstly separates the physical address (separates the main disk partition and logical partition), and then creates a directory on the partition,so all paths start from the drive letter, such as C: // Program Files. On the contrary, the basic version of desktop has a directory first, and then the physical address (partition) is mapped to the directory. So in the basic version of desktop, all paths start from the root directory [/].
/ Root partition - It is the root directory of the entire system, and the necessary partition for the basic version of desktop system;
/swap partition - It is a swap partition that temporarily stores data and the necessary partition for the basic version of desktop system. The size is usually assigned twice as much as the physical memory;
/home partition - It is used to save personal user data, so we recommend to mount independently;
/usr partition –It is used to store the software in system, and it should be allocated as much space as possible.
Q:How to set the partition reasonably for the basic version of desktop?
A:The specific partition is based on your actual needs. The common partition methods are: 1), double partitions - root partition + swap partition; 2), three partitions - root partition + home partition and swap partition. The advantage of dual partition is that you can maximize the use of your hard drive space, but it needs to back up your personal data before reinstalling the system, otherwise the data will be deleted. Moreover, if only set one root partition, all of data will be stored in one partition. It is not safe enough for actual production environment. We usually recommend you to use the three-partition method, which sets up a home partition in addition to the root partition and swap partition, so you can re-install the system cleanly without destroying your personal data.
Q:Could users access the contents of Windows partition in the basic version of desktop?
A:They can access the contents of Windows partition. On the contrary, you can’t access the contents of the basic version of desktop partition in the Windows system.
Q:How to access the Windows partitions?
A:All partitions are automatically mounted when users start the basic version of desktop, including Windows partition, supporting read-write in the ntfs partition. Double click the "Computer" on the desktop to access.
Q:Does the basic version of desktop have the function of editing the taskbar like Windows system?
A:Yes. Right click the panel on the bottom of the desktop, click "panel settings" in the pop-up menu, and open the panel settings interface. According to your own habits, you can edit the panel arrangement, the length of the panel size, and decide whether the panel is hidden or not.
Q:How to use Windows software on the basic version of desktop?
A:You can install Windows software through wine. Wine is an excellent simulation software for Linux system platform. It is used to make the Windows system software run stably under the Linux system.
Q: Is there anything like the tool of monitoring system process in the basic version of desktop (like task manager in Windows)?
A:In the basic version of desktop, users can use "System Management" → "Task Manager" to monitor various processes of the current system and resource usage in real-time.
Q:Why users cannot view the partial directories or copy files to these directories, such as /root?
A:/Root belongs to the system directory. Access or read-write operations needs root user (super user) permission. Users can right click in the directory and click “Open as root identity" to enter the user password with root permission, and get the permission temporarily.
Q:What is root?
A:The super user of the system is generally named as root. Root is the only super user with all permissions in the system, such as starting or stopping a process, deleting or adding users, adding or forbidding hardware, and so on.
Tip: For more information about users and permissions, you can view users and permissions to get more detailed information.
Q:Does the basic version of desktop support wireless peripheral hardware?
A:Yes, it supports hardware such as wireless keyboard and mouse.
Q:How to set the mouse to make it more suitable for ourselves?
A:Open the "Preferences" → "System Settings" → "Mouse and Touchpad". Set your operating mode according to your personal habits, and make it become easier to use.
Q:How to set the response time of keyboard and a variety of shortcut keys?
A:Open the "Preferences" → "System Settings" → "Keyboard", and you can set the repeat button and the cursor blinks. More importantly, the basic version of desktop provides you with any options for setting shortcut keys. You can set a variety of common shortcut keys according to your own preferences.
Q:How to install and uninstall software on the basic version of desktop?
A:The basic version of desktop has a "Software Center", which provides one-stop management such as online software updates, installation, and uninstallation.
Q: Could the basic version of desktop support Chinese input method?
A:The basic version of desktop supports Chinese input method, and has pre-installed Pinyin, Sunpinyin, Shuangpin, Wubi type and other input methods.
Q:What are the shortcuts for the input method operation?
A:It is similar to the operations in the Windows system, "Ctrl + space" is to open / close the input method shortcut keys, "Ctrl + Shift" is to switch the shortcut keys of the input method, "Shift" is the full / half-angle shortcut key for the input method.
Q:Is there any image processing software that is similar to the Photoshop in basic version of Desktop?
A:The basic version of desktop has been pre-installed a well-known graphics processing software: gimp. Its interface is more concise and powerful than Photoshop, and it also supports more image formats.
Q:Could the basic version of desktop play PC games under Windows?
A:In the basic version of desktop, the "Software Center" provides more than 1,000 games. You can play games after installing games in the basic version of desktop. If you can’t find your favorite games in software center, you can also install the popular game in Windows system through wine, such as Warcraft, CS shooting and so on.
Q:Could the basic version of desktop play movies?
A:The basic version of Desktop comes with video players. After opening the video file by using the player, it can achieve the auto-play function.
Q:Could the basic version of Desktop play music?
A:The basic version of desktop comes with music player software. After opening the music file by using the player, it can achieve automatic playback.
Q: How to send and receive E-mails in the basic version of desktop?
A: The basic version of desktop has been pre-installed mail client software, such as Thunderbird. After installing the Thunderbird client-side, you can send and receive your daily mail.
Q: How to handle the daily office documents?
A:The basic version of desktop supports a variety of Chinese office software. You can download and install the office software which you are familiar with in the software center. Through office software, you can achieve most of the text, forms, presentation and other requirements in your daily work.
Q:Could the basic version of desktop quickly create shortcuts for files, folders, and applications?
A:Yes. In any directory of the basic version of desktop, right-click the mouse, and you can select to create folders, documents, launchers in the current directory.
Q:What is the default desktop environment? How to change the desktop environment into other environment, such as KDE?
A:In the basic version of desktop, the default integrated desktop environment is GNOME's optimized desktop/icon theme. In the "System Management" → "Software Center", the basic version of desktop provides other common desktop environments, such as KDE, XFCE, LXDE. Users can search "kde-full" in the "Software Center" to install the basic KDE desktop, and other desktop like xfce4, lxde.
Q:How to display the desktop in the basic version of desktop?
A: You can click the "Desktop" button in the bottom panel of the basic version of desktop or use the shortcut "Windows + D".
Q:How to add personalized desktop gadgets?
A: In the system desktop, you can right-click and select "Add Desktop Gadget” to open the main window of "Gadget" and add gadgets which you need. Desktop gadgets can not only beautify the desktop environment, but also increase the practicality.
Q:How to change the desktop background?
A:In the blank area of the system desktop, you can right click and select "change the desktop background (B)" in the pop-up menu to open the main window of "background". The basic version of desktop provides a variety of background options. You can click the selected background image to achieve the background replacement. At the same time, you can add your own favorite background pictures.
Q:How to add a new user account for the system?
A:Open the "Preferences" → "System Settings" → "Users and Groups". According to the prompts, you can add, delete, and edit the user account.
Q:What is "Terminal"? How to use the "Terminal" in the basic version of desktop?
A:In the basic version of Desktop, there is a powerful graphical interface, but in some operations, the use of the command line will make the problem very simple. In the basic version of desktop, there is a terminal that is similar to the command line prompt in the Windows. Click the "Terminal" button in the bottom panel of the basic version of desktop or use the shortcut “Crtl + Alt + T” to open the terminal.
Q:Could user write programs under the basic version of desktop?
A:The basic version of desktop has already owned the most efficient C/C ++ compiler: GCC. The Eclipse development environment can be installed directly through the Software Center.
Q:How to search the content in computer?
A:Open "Computer" on the desktop, and then click the icon of magnifying glass in the toolbar. Enter the content in the search box and start to search, or you can start the search with the shortcut Ctrl + F
Q:How to lock the computer screen?
A:Open the "Preferences" → "System Settings" → "screen lock". You can set the time to lock the screen in order to achieve automatic lock screen. You can also achieve manual lock screen by clicking the "menu" button in the left bottom of desktop to call out the system main menu, and clicking the lock screen button.
Q:How to set up the network?
A:Click to open the network connection symbol in the panel at the right bottom of the desktop; selecting the "network settings" option, you can set the network proxy and wired network. After clicking the option, you can make the further settings, including of network IP, subnet mask, Gateway and other advanced settings.
Q:Where is the default location for opening the "home directory" option?
A:The default location for opening the "home directory" option is the / home / username, which is the root directory of the current login user.
Q:How to add an application to your favorites or remove it from your favorites?
A:Click the menu, and select the application that you want to set in the right side of the application; then right click and select “Add to Favorites / Remove from Favorites”; or left click to select and drag the application to your favorites, You can also drag the app from the favorites to other places to remove them from favorites.
Q:What is a workspace? How does the basic version of desktop operate on the workspace?
A:Workspace can also be called as a virtual desktop. It can expand work to multiple desktops without squeezing applications on a desktop and customize the different desktops.
The basic version of desktop has the default setting that when the mouse moves to the upper left corner of the screen, it starts to switch the work area, and users can choose a different desktop by switching the work area. Users can also use the shortcut keys Alt + F1 to start the workspace switch.Q:How to restore the Recycle Bin?
A:There is no recovery option on the pop-up menu of the desktop recycle bin by right-click. If you need to restore a deleted file or folder, you can double-click the recycle bin to select the items you want to restore, and click the "Restore Selected Items" button.
Q:Is there a firewall in the basic version of desktop to protect the computer's network security?
A:The basic version of desktop has firewall tool. Open the "System Management" → "Firewall", you can set the firewall to open and close, add and remove rules, and monitor port.
Q:How to back up a variety of files or programs in the basic version of desktop?
A:The basic version of desktop comes with a backup tool. Open the "System Management" → "Backup Tool", through it you can back up any files and programs in the basic version of desktop, and restore the backup files and programs.
Q:What are the differences between "No operation to turn off the screen during this time" in the "Screensaver lock screen" and "No operation to suspend during this time" in the "Power Management"?
A:"No operation to close the screen during this time" in the "Screensaver lock screen" means that during the setting time there is not system operation, then turn off the screen. "No operation to suspend during this time" in the "Power Management" means that after the screen is turned off and there is no system operation during the setting time, then the system is suspended.
Q:What do you need to pay attention, when using the Fcitx input method for a virtual keyboard?
A:When you start the virtual keyboard, the selection style of the virtual keyboard will affect the style of the real keyboard, so you need to pay attention to the lock screen situation after starting the virtual keyboard. If your user password uses the "Latin" (default) style of the keyboard settings, and you start the virtual keyboard, selecting another style to lock the screen, and then log in again, you will not be able to enter the password correctly.
Q:If the basic version of desktop breaks down, how to deal with it?
A:When you encounter failure during using the basic version of desktop, you can use "Troubleshooting" that is on the system desktop panel to solve the conventional failure. It provides one-button solution to restart the desktop, and restore the system default and some other fault.
Q:How to update the system?
A:Click the "Update Manager" button in the panel at bottom right of the desktop and start the "Update Manager" to update the system package.
Q:How to reinstall the basic version of desktop?
A:Use the installation CD or U disk, and restart the computer. Re-install the system by using the Live CD.
Q: What is LiveCD?
A:LiveCD refers to the system running on the CD, which is stored in a removable storage device. It doesn’t need to install LiveCD on the hard disk. The media includes CD-ROM (Live CD), DVD (Live DVD), and flash disk (Live USB) and so on. Its operating mechanism is "Put the file on the hard disk into the virtual disk of the memory to operate".
Q: How to forbid the USB storage disk?
A: Add "Please note that super permission is required” to the end of /etc/modprobe.d/blacklist.conf file.
Q:How to contact technical support staff if you encounter problems during using or want to get technical support?
A:Please contact us as follows:Email: support_os@cpu-os.ac.cn