@ qole,
Everything is OK now. I have uninstalled debian chroot and redownloaded and reinstalled ,it is working now. The problem was corrupted download .It is very cool, Thanks for your great job. I have some questions about debian linux:
1. How can we change the desktop resolution? Because, when iceweasel opens windows not fit the desktop and fonts a little big, so when a popup opens I can't see bottom of the window.
2. I couldn't change font color in the Open office writer. There is a button on the menu but when I click no color scale appears.
3. I couldn't write text on the slide in Presentation program.
4. There is a problem in the second keyboard(xv keyboard). Generally, when I click a character one time it writes many characters like aaaaa.
5. Is the Java script active on the Iceweasel browser? Must we install other java package especially for internet banking sites.
Thanks in advance