Are there any benefits of many HD partitions?
How many?
yes, more than one can have benefits
On one hand, the last couple of GB on a hard disk tends to be unused,
so having 10 40GB partitions would mean these last corners are wasted.
yes, but how full will the disk ever get?
10 might be excessive, depends on what you're used to
though, and the reason for the subdivision.
Of course this is a soft restriction as you can fill the partitions in
their entirety if you pick your file sizes carefully.
It rarely works out that well, how will you know ahead of
time exactly what you'll need later? Of course you could
resize 'em later but that could get to be a PITA.
OTOH, would a partitioned hard disk be less fragmented?
It's quite possible, how much depends on the uses.
A few random ones, which may or may not be applicable to any
particular use;
- Putting OS on first partition keeps seeks shorter on most
used files and reduces fragmentation of further things
installed to same partition. Ideally this OS partition
would only be a little bigger than you ever expect to need
(plus a few GB, there is never enough space since data grows
with time).
- Putting static files on their own partition, since they
dont' need backed up as frequently (if ever, after the first
redundant backup copies).
- Putting user data on a different partition than the OS
partition if windows, since windows can be a rather fragile
OS under some situations and it's useful to be able to
restore the OS partition but keep user data, by wiping the
whole partition and restoring a partition image made by
software such as Ghost or DriveImage.
- Putting the OS installation files and patches on a
separate partition, for similar reason as previous
suggestion for user data.
- Multiboot scenarios, backup booting of same OS (copy),
same OS configured differently, or a different operating
system(s).
- Applications, if they don't change and store user
settings in their own subdirectory instead of the windows
registry or elsewhere, then they will be tweaked to the
user's preferences still if/when the OS partition needs
replaced. Most newer and larger apps won't work like this
anymore but some do, and those that do are often smaller and
faster, desirable to some people.
- Your uses may differ quite a bit from someone else, 'tis
the whole point of a configurable system like a PC so you
may have more or less need than others do.