copied data drive has more files than original

Hewlett-packard / Hp pavilion tx2000 notebo...
January 30, 2012 at 23:50:06
Specs: 7 ultimate 32bit, 2.9 GHz quad / 4gig
In a nutshell, I have an internal slave drive for data, it contains nothing more than my games, music, movies, photos, setup fles.....just data.
Anyhow, it was approaching 90% full, so decided to buy a 3rd drive. What I tend to do, is copy everything over (keep files on a fresh drive to minimise breakdowns), then format the original slave for new stuff.
Well after windows finished transferring it all over, I compared the drives for verification, and noticed the new drive had 20gb less data on it (both drives are identical in size, brand etc), yet it also contained MORE files than the original.
without checking thousands upon thousands of data, how is that possible, and is there a quick way to see what's missing/added?
Both drives have the option to compress selected, and I did nothing more than highlight everything, and copy it over.

(This is not related to my earlier post of transfering operating system, this is a result of doing some maintanence after OS drive died)

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January 31, 2012 at 04:13:59
Check your "System Restore" settings. System Restore stores restore points on all drives for which SR is enabled, but since the restore points are in a hidden folder, that folder doesn't get copied accross to your new drive (since you can't select it because it's hidden).

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January 31, 2012 at 07:28:18
I can't answer you original question because there are too many variables. Type of file system in use is one.

Breakdown of hardware is only one of the many risks that can make your files disappear. Fire, theft, user error, power surges, etc. can all play a part.

What I will advise you to do is to change your practice of maintaining ONLY one copy of your personal files. You are playing Russian roulette with the data. You should always maintain at least TWO copies of any date you wish to retain.

You can use two hard drives (internal + external) External + burn to optical drive, or use an off site backup service.

You have been lucky so far. When your luck runs out you will be back here begging to help. Don't let that happen.

The more important the files the more diligent you must be. Photos are not replaceable so they should be guarded more closely.

I also recommend that you NOT use compression to store the files. If you make a complete image of your primary hard drive compression is OK. However, photos, music, etc are already compressed files. Little can be gained and access is much more limited. Simply copy those types of files.

I prefer using optical disks for archival purposes. DVDR disks are cheap and once made, can be easily duplicated for even more security.

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