Safe mode
The Safe Mode is a special booting an operating system, which it under Windows by Microsoft, Mac OS from Apple, and Android is Google.
Microsoft Windows
Safe mode (also called restricted mode ) describes a special way of starting Microsoft's Windows operating systems that differs from regular normal start in a few ways :
- Use of a standard graphics card driver ( VGA ) with a resolution of 640 × 480 pixels at 60 Hertz .
- Parts of the registration database are not loaded, including hardware and software entries ( device drivers )
- AUTOEXEC.BAT and CONFIG.SYS are skipped ( Windows 9x )
- All autostart objects are deactivated (in the registry under Load = and Run =)
Safe mode is reached by pressing the function key at the right moment while the computer is starting . This is the moment shortly before the Windows logo appears (it has proven to be practical to simply press the key repeatedly during the boot process , some BIOS then initially presenting a selection menu for the boot medium). In addition to other start options, a menu appears with the selection: F8F8
- Safe mode (restricted as "VGA mode" already in Windows NT 4.0 )
- Safe Mode with Networking (since Windows 98 )
- Safe mode with Command Prompt
With a few Windows versions, you can press F8the F5key instead of the key. Windows NT as well as Windows 98 and higher support by default F8. In certain situations, you can only get to Safe Mode by using Windows Startup Help: Select Startup Help → Interrupt Automatic System Restore → Select "Advanced Options" → Select Restart → Now F5press immediately (several times if necessary) until Windows Start Manager appears → now one with F8in Safe mode. Another possibility is the use of the msconfig program : On the “Start” tab in the “Start options” area, the option Safe can be checked, whereby this setting is stored in the associated entry in the boot menu and the system is automatically saved in the next restart or optionally in general Safe mode is loaded.
The whole purpose of safe mode is to be able to attempt a repair if Windows can no longer be started normally. Often, but not always, Windows can be started in Safe Mode while normal startup results in a blue screen . If Windows detects problems during normal start-up, the next time Windows is started, the above selection menu with Safe Mode is often F8displayed even without first pressing the key. A similar and alternative option for Windows 95/98 is the "Restart in MS-DOS mode" option, which enables error analysis and correction at the command line level by bypassing Windows startup.
Because most of the processes that otherwise work in the background (guardians of anti-virus software, network components, advanced graphics drivers, but also many computer viruses, etc.) do not start in safe mode, safe mode is also particularly suitable for checking for errors or uninstalling.
Apple Macintosh
Also, Mac OS from Apple in a safe mode (can english SafeBoot or "Safe Boot" from the Apple vocabulary) to start. Different levels of safe mode are possible with newer system versions.
Mac OS 6
In System 6 , version 6 of the classic Mac OS , pressing the mouse button during startup deactivates the existing system extensions. Any floppy disk that may have been inserted will also be ejected.
Mac OS 7 to 9
From System 7 (or Mac OS 7.6), Mac OS 8 and Mac OS 9 , the existing system extensions disabled if during startup the Shift key ⇧ (also: Shift key) is pressed. By pressing the Leertaste, the "System extensions on / off" control field is called up at an early start (in any case before the login dialog appears).
Mac OS X
If you press the shift key ⇧on a computer with macOS during the startup process , it will start in safe mode. This means that the file system is repaired, only the absolutely necessary drivers and system fonts are loaded, and various caches are emptied.
Pressing cmd+ SMac OS X starts in single user mode ( English Single User Mode ). Only the necessary drivers are loaded, and instead of the graphical user interface, a root shell is displayed that the user can use to repair the system.
If during the start cmd+ V( English verbose , in detail ) is pressed, a console is displayed during the boot process, in which the system writes the log entries. However, the system is fully loaded and the graphical user interface also appears; as such, this is not a safe mode, but it does provide insight into what is happening during boot.
See also
Individual evidence
- ↑ Use Safe Mode on Mac. Apple, April 20, 2020, accessed May 13, 2020 .
- ↑ Mac OS X: What is Safe Boot / Safe Mode? Retrieved November 11, 2011.