Red Hat ENTERPRISE LINUX 3 - STEP BY STEP GUIDE Guida di Installazione Pagina 78
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66 Appendix C. Troubleshooting Your Installation of Red Hat Enterprise Linux
C.4. Problems After Installation
C.4.1. Trouble With the Graphical GRUB Screen on an x86-based
System?
If you are experiencing problems with GRUB, you may need to disable the graphical boot screen. To
do this, become the root user and edit the /boot/grub/grub.conf file.
Within the grub.conf file, comment out the line which begins with splashimage by inserting the
# character at the beginning of the line.
Press [Enter] to exit the editing mode.
Once the boot loader screen has returned, type b to boot the system.
Once you reboot, the grub.conf file is reread and any changes you have made take effect.
You may re-enable the graphical boot screen by uncommenting (or adding) the above line back into
the grub.conf file.
C.4.2. Booting into a Graphical Environment
If you have installed the X Window System but are not seeing a graphical desktop environment once
you log into your Red Hat Enterprise Linux system, you can start the X Window System graphical
interface using the command startx.
Once you enter this command and press [Enter], the graphical desktop environment is displayed.
Note, however, that this is just a one-time fix and does not change the log in process for future log ins.
To set up your system so that you can log in at a graphical login screen, you must edit one file,
/etc/inittab, by changing just one number in the runlevel section. When you are finished, reboot
the computer. The next time you log in, you are presented with a graphical login prompt.
Open a shell prompt. If you are in your user account, become root by typing the su command.
Now, type gedit /etc/inittab to edit the file with gedit. The file /etc/inittab opens. Within
the first screen, a section of the file which looks like the following appears:
# Default runlevel. The runlevels used by RHS are:
# 0 - halt (Do NOT set initdefault to this)
# 1 - Single user mode
# 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
# 3 - Full multiuser mode
# 4 - unused
# 5 - X11
# 6 - reboot (Do NOT set initdefault to this)
#
id:3:initdefault:
To change from a console to a graphical login, you should change the number in the line
id:3:initdefault: from a 3 to a 5.
Warning
Change only the number of the default runlevel from 3 to 5.
Your changed line should look like the following:
- Red Hat Enterprise Linux 4 1
- Installation Guide for x86 1
- Itanium™, AMD64, and Intel® 1
- Extended Memory 64 1
- Technology (Intel® EM64T) 1
- Table of Contents 3
- Introduction 7
- Mail backupfiles mail reports 8
- 2. How to Use This Manual 9
- 3. Accessibility Solutions 10
- Chapter 1 13
- Chapter 2 15
- • have enough unpartitioned 16
- <path-to-workspace> 17
- • mount /mnt/cdrom 18
- • umount /mnt/cdrom/ 18
- Chapter 3 21
- Chapter 4 23
- EM64T Systems 27
- <device> 29
- 4.3.3.1. Kernel Options 30
- 4.5. Installing from CD-ROM 31
- 4.8. Installing via NFS 33
- 4.9. Installing via FTP 33
- 4.10. Installing via HTTP 34
- 4.12. Language Selection 35
- 4.13. Keyboard Configuration 36
- 4.14. Disk Partitioning Setup 37
- 4.15. Automatic Partitioning 39
- /boot/ partition 40
- 4.16.2. Disk Druid’s Buttons 42
- 4.16.3. Partition Fields 43
- • The version of the OS 44
- 4.16.5. Adding Partitions 45
- 4.16.5.1. File System Types 46
- 4.16.6. Editing Partitions 47
- 4.16.7. Deleting a Partition 47
- /boot/ partition was created 50
- 4.17.2. Rescue Mode 51
- 4.18. Network Configuration 52
- 4.19. Firewall Configuration 54
- • http://www.redhat.com/docs/ 56
- • http://www.nsa.gov/selinux/ 56
- 4.21. Time Zone Configuration 57
- 4.22. Set Root Password 58
- 4.23. Package Group Selection 60
- 4.24. Preparing to Install 62
- 4.25. Installing Packages 62
- 4.26. Installation Complete 62
- 4.27.3. Connect Your System 63
- Post-Installation Setup 64
- Appendix A 67
- A.2. Upgrading Your System 68
- A.4. Upgrading Packages 69
- A.5. Upgrade Complete 69
- Appendix B 71
- Important 72
- Appendix C 73
- Error Message 75
- C.3.4. Using Remaining Space 76
- <failed> 77
- Appendix D 83
- • The partition’s type 85
- Partitions 87
- • Create new partition(s) 89
- D.1.8. How Many Partitions? 92
- Appendix E 95
- Shell> prompt, type 96
- Appendix E. Driver Media 85 97
- 86 Appendix E. Driver Media 98
- Appendix F 99
- RHupdates/ on the server 102
- Appendix G 103
- Colophon 109
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