Some of magic you can do with it: http://www.dragonflybsd.org/docs/docs/howtos/howtorecoverdat...
Also.... maybe not:
Server: Apache/2.2.24 (FreeBSD) mod_ssl/2.2.24 OpenSSL/1.0.1e DAV/2
Server: Apache/2.2.25 (FreeBSD) mod_ssl/2.2.25 OpenSSL/1.0.1e Phusion_Passenger/4.0.23
"One big part of the goal set will be the creation of a
middle 'emulation' layer which is managed by the kernel
but runs in userland, which will take over all primary
system call entry points (in userland) and convert them
to syscall messages that the kernel understands. 4.x,
5.x, SysV, Linux, and other compatibility sets will be
moved out of the kernel and into this middle layer."
* think about subsystems like Win32, POSIX, OS/2 of the WinNT series operating system (XP, Vista, 7, 8, Xbox, ReactOS)
Ultimately we are left with an abstraction layer which abstracts nothing because Win32 is the base level abstraction for all the other abstractions now. Metro, WP etc run on top of it all like a massive house of cards throwing 0x80004005 around to piss off devs. If you know the difference between Nt and Zw you'll get what I mean :)
It's all a big shame because the NT native API and NTFS are absolutely flipping marvelous.
Compatibility layers got destroyed by virtualization as well.
Whole emulation layer thing was a bad idea for NT and this as well.
 Totally undocumented other than the leaked Windows NT/2000 source code a few years ago.
quoted from: http://www.dragonflybsd.org/history/
"the logical continuation of the FreeBSD 4.x series"
I wonder what type of computing world we would be in if OSS were more prominent back in the late 80's / early 90's. Imagine what we could have built with an open source compiler (GCC) and a bunch of example code (Github) for the Amiga. Wow! :)
Can one use the HAMMER FS on Linux? Is there any guide for this? Is it reliable?
 In the sense it's a great filesystem that could be more widely used.
So can anyone point what is are the most negative things about BSD, and DragonFlyBSD in compared to Linux, OSX and Windows.
I'm really curious, and I would like to try it out - possibly on my Chromebook C7100 if it allows it so, or maybe my very old MBP (6 years), it's time to get rid of the dual booted Windows XP there.
Something to consider, which I should point out because your new, is that without BSD you wouldn't have OSX. There's a little BSD in everything (even windows). Another worthy article you should definitely read which explains that BSD is the The single Greatest Piece of Software Ever, with the broadest impact on the world, was BSD
OS X and others have leeched off BSD and made billions, yet every December, this year being the same, FreeBSD has to whip out the begging bowl to raise funding.
Yes, some large corporations employ some of the FreeBSD folk, but what would happen if they stopped employing them? Would FreeBSD be able to build a strong community of developers to accelerate development? I doubt it.
Linux is in a much healthier place and I attribute much of that to licensing as well as technical excellence. The GPL has helped foster an active community around Linux, one that does not allow corporate vultures to simply scavenge off the best bits and usurp direction of the project.
I think BSD lost momentum because of the AT&T litigation back in the early 1990s and that momentum helped and continues to help Linux achieve the success that it has.
It is possible to praise Linux without burying BSD.
I'm pretty sure the ftp.exe client program had some BSD bits at one time. There might have been some small things like that. Nothing big.
There were a few little odds and ends that popped up with BSD license notifications over the years, like the ftp client IIRC. As you say, little utilities that don't amount to much. What is YOUR point?
The big wins are however: rock solid, wonderful documentation, entirely cohesive base system, small, big enterprise features (ZFS, mandatory access control, tracing frameworks, awesome network stack, security, ACL support and better hardware support.
When I say better hardware support, I mean the drivers all work rather better than their Linux counterparts rather than being plentiful and the supported platforms are plentiful and reliable.
I can drag a 17 year old SPARC64 machine out of the cupboard and just use it.
Whatsapp had an interesting presentation @ Erlang Factory worth considering -- http://www.erlang-factory.com/upload/presentations/558/efsf2...
Waiting for 10 before serious evaluation starts when pkgng is default. That and freebsd-update pretty much nail it then for me.
I occasionally get caught by a difference between the BSD and GNU userlands so I've often contemplated giving one of the BSDs a go rather than my typical OS X/Debian/Ubuntu Dev/prod web server preference.