Don't know what happened, I did the whole thing in about 6 minutes the download is a ISO file. It's really fun the new things in there wish you better luck getting it.

Here ya go, BDBF:

http://windows.microsoft.com/en-gb/windows/preview-download?ocid=tp_site_downloadpage

Thanks for your help DOC.

Okay just to be sure.. I downloaded the ISO and kept the product key.  I am using my main and only PC.  Win 7 is on my main HD C:.

I have a second internal HD which is partitioned.  Can I install this Tech Preview on my secondary drive E: and then change the Boot Startup to E: after the DVD is made and I run the Setup to E:?

Without damaging my Win 7 install?

I cannot afford to reinstall my Win 7.  so.. is what I am considering safe?

BDBF....don't.

Download a [free] copy of Oracle VirtualBox ....and install 10 in that.  That way there is NO danger to your existing OS.

http://download.virtualbox.org/virtualbox/4.3.16/VirtualBox-4.3.16-95972-Win.exe 

Direct dl link.

http://www.oracle.com/us/technologies/virtualization/virtualbox/overview/index.html 

Link to site.

Thanks Jafo.  I installed the VirtualBox and got it working.  I configured a session.

I then loaded my disk imaged Win 10 DVD in my D: drive and it auto-started.  It began by preparing the install and was writing to my C: drive.  At no time did the Win 10 setup ask me where I wanted to install it.

Seeing all the writing to my C: drive caused me to chicken out.  I cancelled the setup.

So any advice in how to tell Win 10 setup to install to the virtual machine??

You should be safe as long as you disconnect your Win 7 drive when you do the install.

Once you complete the install and have Win 10 up and running you can reconnect you Win 7 drive and use your CMOS boot menu to choose which drive to boot at startup.

Jafo has a good sugestion and that's how I'm running it right now.

Check that your VM indicates it has the DVD drive connected [settings/system].

Insert the DVD...and cancel setup.

Open your newly set VM for 10 and click 'start'.

You'll be prompted for location of iso or cd/dvd...

Let it do its stuff...

Multi-booting OS's can lead to trouble...it's certainly not unheard-of.

VMs are next to painless.  If it buggers up...you can simply delete it...

Thanks Jafo.  My PC still works....  But no Win 10 It only runs on Intel Processors.  My AMD bsed machine is generating an error code when trying to install to the Virtual Box.

Sigh..

Haven't seen any reference to not working for AMD processors....wouldn't have thought so, either.

If it helps I installed to VM directly from an iso....didn't burn it to dvd....

Yup, sure can if yer name's Jafo... it's certainly not unheard of.  But if yer somebody else....

So Glad I got my main rig [Intel] out of storage, then ... my second rig is an AMD FX8350 based machine, though I think it strange that MS would exclude AMD based machines, either in virtual machine or not.  I successfully ran the preview of Win 8 on my AMD rig, so unless MS changed something, I would think Win 10 previews would also run on AMD machines.

I have used VirtualBox with an AMD chip. No problems there.

Currently I have 10 installed in a VM using VMware with an AMD processor. I find it easier to use than the Oracle software. But as Jafo says, AMD processors will run it fine. 

Yep I got it now.  I went into my BIOS and had to enable Virtual Machine Mode.  Then booting straight from the ISO file fixed the remaining issues.  Its running now.

Yay!!!! You are now part of the 10 crowd. I wish you luck!

Me too. Finally broke down and dl'd oracle and the tech preview. The ISO is gonna take a while, 1 hour left. Jeez...this thing is slow.