Grease Monkey wrote:
Replying to 10/30 FredW

No, stop defragging your SSD, it will harm your SSD.

I disabled the auto defrag per your remarks.... my windows shows my (C
drive is 19% fragmented but I'm guessing there is no sense doing any
defrags anymore from what everyone told me....

How big should Windows be?

Most of my not Windows files seem to be in the AppData folder.
Is there a Windows program I can buy to safely clean up AppData?

On WinXP, C:\Windows is 5GB (may be .msi or patches bloating things a bit)
C:\Program Files is 3GB (your mileage may vary)
(my downloads is 31GB today)

On WinXP, there is an Application Data folder,
whereas Windows 7 would have a AppData folder with
the hidden attribute set on it, requiring a change
in File Explorer to "see" it.

You can use windirstat or sequoiaview to examine
a partition for content. The visual display gives
size information. Linux also keeps a version of windirstat
(kdirstat? something like that).

AppData might have your email messages. You wouldn't
want to delete those in a sloppy or haphazard way.

Cleaning tools must be very selective.

If you do decide to use some fancy cleaning tool,
at least have a backup image of the partition for
when you have regrets about the project later.

I try to keep one spare disk around, for "bozo backups",
where I need to back up something before I ruin it :-)
Some days, my prediction abilities ("will ruin it")
are uncannily accurate. I especially liked the day
I did a backup of Win7 (just a random backup, no
plan at all), and two hours later, destroyed C:
(unrecoverable!). And that minty fresh backup
was just sitting there, yelling "pick me, pick me".

Using Windirstat or Sequoiaview, you should be able
to spot the occasional "porker". I've had file systems
before, where the removal of one really big file,
was all the maintenance it needed.

https://en.wikipedia.org/wiki/WinDirStat

http://www.win.tue.nl/sequoiaview/

Paul