Defragmenting using "cmd" in SAFE MODE.

I found that performance was best with "Vista Home Premium" when I defragmented in SAFE MODE, using the command promt method.

ie. "defrag c:, defrag c: -b, defrag c: -w",

also in Vista, "defrag c: -a" would analyze

Now that I have Windows 7 Home Premium 64-bit, I cannot seem to achieve this in Windows 7.

They have changed it slightly, (ie. "defrag c: /a" to analyze). Does anyone know how to defragment, in SAFE MODE, using the command promt window?

I think if you use "defrag.exe -?" it will give you a list of commands.

Maybe they have changed something. I don't have my 7 machine now, but try it out.

I does give a list of different "defrag" commands, but none of them work.

Are you running as admin? You probably need to.

Here is a tutorial also....if you have not seen it or don't know about it. For Vista but should work.

Disk Defragmenter from Command Prompt - Vista Forums

It worked for me. I opened the command prompt "Run as administrator" and used the command "defrag C: /a /u"

CarlTR6 said:

It worked for me. I opened the command prompt "Run as administrator" and used the command "defrag C: /a /u"

Does it work in Safe Mode, for you?

It works for me in Normal Mode, but not Safe Mode.

No, it didn't work for me either in the safe mode.

However, I just read an article by Fred Langa on using the safe mode for defrag. He stated there was some advantage in doing this with XP;;but he can find no advantage in doing so with Win 7 or Vista.