Hey just wondering when the Windows 8.1 update comes out does anyone know if i have to re install my software, games etc etc? Right now im running Windows 8 64.( I did not update to the preview version of 8.1 Im waiting for the final version)
Microsoft will release full ISO images of Windows 8.1. If you were using Windows 8, you could just upgrade to 8.1 via the Store (or you can do a clean installation using the iso/dvd).
So can I just take my unused win 8 key and just use it for the 8.1 iso or do I have to install 8 and then get 8.1 from the store?
I get mine from the source in the UK...MSHQ at Reading. I am there quite often.
It is only a full install if you do not have windows 8....for those of us who have windows 8...it is an upgrade and nothing will be lost that is already on your machine!!its a full re-install, its a brand new OS, same with server 2012R2
Huh? This is the first I've heard of this. Please elaborate.Athlon64 users will have to switch to 32bit which means a reinstall. >8TB support couldn't wait for Win9.
Huh? This is the first I've heard of this. Please elaborate.
Interesting. What a weird change to make on a point release though. Unless they're going to support Windows 8 (exclusively from 8.1) for 10 years, this would mean that they're technically violating their support agreements, as these users would not be able to update to 8.18.1 x64 requires CMPXCHG16B, an instruction introduced on Prescott and is missing on K8.
Wikipedia says P4 didn't get LAHF/SAHF until G1, but PrefetchW is a non-deprecated 3DNow instruction which AMD saysFor 64-bit installations of Windows 8.1 Preview, your CPU must also support CMPXCHG16b, PrefetchW and LAHF/SAHF.
which is Cedar Mill so all 90nm P4s are affected. Found this fun fact.Intel processors do not implement these instructions. However, with family 15/model 6/stepping 1, Intel processors started treating the instructions as a NOP
So MS will probably dropping the trap, LAHF/SAHF is used for virtualization I have no guesses on whats going on there, and CMPXCHG16b would be needed for >8TB per process (insert NSA joke). That is quite a bit for a point release.When the original port of our compiler to target x64 was done, only AMD hardware existed. And, at that time, the PREFETCHW instruction was deemed beneficial, so we emitted it.
At some point after this, Intel hardware was released that supported x64. Of course, that hardware did not support the PREFETCHW instruction. Given this and the fact that the instruction does not modify data, registers, or flags, the Windows team added support to handle the illegal instruction -- i.e. the offending 0f 0d modrm PREFETCHW encoding is modified, likely becoming 0f 1f modrm which is a multi-byte NOP. With this support our compiler continues to emit the PREFETCHW instruction.
The RTM download ISOs are available everywhere now
I downloaded the Windows 8.1 Single Language x64 ISO
With Windows 8.1, you cannot use your product key to install during setup, instead, there are a few default keys just for the sake of installation, after you enter that default product key (which cannot be activated its just for the sake of installation), when you are on your desktop, go to PC Settings, then activation, the enter either the key built into your BIOS or your retail product key and it will activate right away
if you don't kinow what is the key built into your BIOS, before you format, get it using Belarc Advisor (google it, install it, then look under software licenses it will be there)
Windows 8.1 isn't being released on Technet or MSDN until October. Any RTM releases you see right now are stolen ISOs that are presumably legit.I don't see them on technet? I thought it was an October release.