Why do I need to scan in Safemode?

[SHENGTON]

This make me confuse guys.

Lots of topics I read and they always advice to boot into safemode then scan and delete the virus.

Now my question is:
Why do I need to scan and delete viruses in Safemode if can scan and delete viruses in Normal mode?

[Dusty]

When the machine is in Safe Mode, most viruses cannot run, and Anti-virus scans are often more effective. If you've tried to remove a virus in Windows, and have been told by your Anti-virus program that "access is denied," a scan in Safe Mode is a good idea.

Access may be denied due to a file being in use by your OS, in Safe Mode that file may not be in use..

[SHENGTON]

So not all viruses can't run in safemode, some viruses still run even in safemode?

[Deerpark]

Yeah some viruses will run even in safe mode.

[evilfantasy]

Safe mode has a minimal amount of drivers/programs/services running so it makes removal much easier. Many virus/trojans/worms will run as a service or background program. Removing them when they are not running gives a much greater chance of removal with no errors.

Safe mode with no windows open is the preferred method of removal.

[SHENGTON]

Thanks guys for your answers. Your answers are helpful!