Your statement that "you have no control over the file placement" is
illogical when placed in the context of placing files / folders in
particular partition. True you cannot place them in a particular place
in a particular partition but that is not what your statement was
saying. You were maintaining the user had absolutely no control on
placement and this is demonstrably not proven by you.
You really need to get out more, when it comes to defragging a drive or to
fragmentation, the only that that really matters IS placement in the
physical drive in relation to the partition the data is stored on.
You can't control where the file goes on the physical drive even with
partitions, you can guess where it MIGHT come close to if you understand
the partition and the actual platter layout and geometry on the drive, but
I suspect you don't have a clue.
So, tell me, since your typical user can't place a file on a drive without
a partition being created, at least one partition, how exactly is the user
going to control the placement of that file on the physical drive?
Whether the partition is little or greatly used is not relevant in
determining whether the user is exercising control.
As is anything else about the user controlling where the file goes - the
user has no control over where the data goes on the drive, they just have
the appearance of some control.
Prove otherwise if you're so dang sure - I'll be waiting for your proof.
Which Defragmenter you use is not a major factor affecting fragmentation
of files. Factors are the frequency files are rewritten. The size of
files being written and the contiguous space available at the time the
file is written. Fragmentation is exacerbated if there is limited free
space.
You need to understand a couple things - Defraggers come in different
flavors, each has it's strengths and weaknesses, some are better than
others. Unless running in real-time, all the time, a defragger only
impacts files when it's run, once it stops fragmentation starts growing
again.
Your stating the obvious has nothing to do with the fact that files will
fragment on empty drives, almost full drives, and that users have no real
control over the placement of file on the drive.