Hello John,

No, defrag will not wake your computer from sleep to perform a scheduled
defrag. It will postpone the defrag until later. It will wait until you
power on your machine, and you leave your machine idle for some period of
time (ie. it will not start automatically as soon as you power on your
machine and start using it. Defrag should only run when you are not using
your machine. )

Thanks!
Sam Kroonenburg

"John Hanley" <jphanley@ix.netcom.com> wrote in message
news:%23gGAOQw1HHA.5164@TK2MSFTNGP05.phx.gbl...
>
> "John Hanley" <jphanley@ix.netcom.com> wrote in message news:...
>>I did some googling for an answer to this, but did not find a direct
>>answer. My Disk Defragmenter is scheduled to run at 1:00 a.m. every
>>Wednesday (the default schedule that came with the installation).
>>Normally my computer is in Sleep mode at that time. Do I presume that the
>>Defragmenter wakes the computer, performs the Defrag, then puts the
>>computer back to Sleep? The reason I ask is that I see that the last
>>Defrag was run last Wednesday at 10:11 p.m. which might have been about
>>the time I put the computer to Sleep for the night; so possibly it got it
>>over with before it actually entered Sleep? Just trying to understand.
>>Thanks.
> Just realized that I goofed in this post. The actual defrag took place at
> 10:11 p.m. Wednesday which is many hours *after* the scheduled time of
> 1:00 a.m. So, perhaps it could not defrag at the scheduled time and then
> did it at an opportune time later?