We got a new Lenovo T430U yesterday and with its new SSD we discovered it boots from the BIOS to Windows 8 in three seconds.
I remember corporate machines back in the 90s taking 20 minutes to boot - so I got to thinking - is the improvement the modern hardware or the modern OS - or a combination of the two.
So in the interests of scientific enquiry I gave it a go and got the following results - all using VMware workstation on a Intel Core -5 CPU with 16G RAM. I deliberately did not use VMware tools for any of them because they are not available for the older operating systems and do tend to speed things up. I also compared this with Windows RT on my little Surface with its ARM processor and 2GB RAM, and also with the iPad, the Xbox and two different phones.
Windows 7 Professional - 20 seconds
Windows NT 4 Workstation - 18 seconds
Windows Server 2000 - 22 seconds
Windows 8 Enterprise - 6 seconds for a full restart or 4 seconds from the 'shutdown' state which is really a sort of suspend to disk.
Ubuntu Linux was very slightly longer than Windows 8 at about 7 seconds - also way faster than it used to be.
Mac Book Air 13" 2012 - 9 seconds - not bad either.
I then had a look at our other leisure type devices which are largely ARM based and noted that on the whole they were a lot slower than the Intel based stuff - though of course they don't tend to be stuff you shut down that often in the normal run of things.
Surface RT - 23 seconds
IPad 3 - 31 seconds
Nexus 7 - 46 seconds
HTC 8X (Windows Phone 8) - 37 seconds
iPhone 4S (iOS 6) - 29 seconds
Xbox 360 (IBM Xenon Power PC processor) - 41 seconds
Trouble with these devices it that it is impossible to known how much of it is the OS and how much the hardware. For example on my 8X the Windows Phone boot screen only showed for one second - the rest was all the HTC logo. I don't have my old Nokia 800 WP7 to hand - but I seem to remember that booted way quicker.
There has obviously been a huge improvement between Windows 7 and 8 and between old and new versions of Linux, but also modern hardware boots old operating systems greatly faster than you would imagine.