@barry cohen. Yes, you can put Win10 on your drive D. That's what I did, same total space as you have, which is good (Win10 needs a lot of space). Do you see your 'Get Windows 10' icon in your system tray? It's more like a big blue advertisement. If you see it, you can right now RESERVE your copy of it, but there will be more work to do. You won't maybe get it for some months. MSFT will send it to you as a download.
1. Before the Download arrives, Prepare your BIOS boot so you are not locked out of your computer by Windows 10 (click here), and
2. Prepare your D drive. Make sure it's formatted as NTFS, and has NO other files of any kind on it. So if you now have backup files, you'll need to remove them.
3. When the download comes, you will be given the option of Custom Install. CONNECT ALL OF YOUR DEVICES to the machine: your printer, your camera, whatever you would normally use, so Windows can detect what you have and install the right drivers. So after that, elect that 'Custom Install', and you'll be presented with a list of drives to which you can install. Select the drive you readied in 2.
4. Next you'll be presented with a blue screen which has a big EXPRESS INSTALL at the lower right, but in the lower left, a tiny 'customize' link. Pick the latter. Once in 'customize', you'll notice that Microsoft is turning your computer into Big Brother, so that 'Cortana' (a kind of computer personal assistant) can work on your machine. It requres that all your input, including your camera and microphone, be 'on' and 'shared' with Microsoft and its 'trusted partners'. I'm thinking you won't like that, so you are presented with a bunch of sharing options you'll want to turn OFF. It's painstaking to do this.
5. Then you're presented with the License, so please read it. You will be mandated to accept EVERY UPDATE Microsoft sends you, and if you don't want that, do not 'Agree' and Windows 10 will not be installed. Or, do accept that, and Windows 10 will be installed.
6. Now before or after #5, you might have been asked for your Microsoft Account name, and if you didn't have one, to create one. You need to create one, because in Microsoft there are other privacy-invading options turned 'on' in your machine which you can only access and shut off, if you have a Microsoft account. So log in or create your Microsoft account, if now prompted to do so.
7. Afterwards, it will take a good hour or more for Windows 10 to download and install. Some people experienced 4-9 hours, depending on your connection, what devices you have hooked up, etc. DO NOT interrupt the process. The machine may reboot several times, as Windows needs to restructure what it downloads and installs, based on what it just installed.
8. Once it's all done, the machine will tell you (I think it makes a chirpy sound, too, I forget). Once it does, it will boot and ask you for your password using your Microsoft account.
9. The FIRST thing you want to do as soon as you get in the system, is right-click on the desktop, select Personalize, look in the top left corner where you'll see "<-- Settings", and click on that word (it doesn't seem like a link, but it is). Then scroll down the ugly menu which you see next, and probably in the lower right corner you'll see "Privacy". Click on it. Then click on every item in the listing on both left and right, be sure to use the scrollbars to make sure you've seen every setting. You are opted into sharing your camera, microphone, locations, typing, 'inking' (I don't know what Microsoft means by that), etc. So you will want to turn all those features OFF. Some of them, will require you go online, and when you click on every line of text you see (for they don't look like links), you will eventually find the ones which take you to Microsoft's own website, and to Bing. In the former, there are 6-9 other options of 'sharing' which are auto ON you may well want to turn off, such as what kind of advertising will show up in Edge and the search bar. I couldn't get Bing to work, so I'm not sure how many opt-out selections you have to make in Bing. Point is, this step alone will take a good hour or more.
10. Finally, to get rid of the ads, you have to left-click in the Search box, look left and you'll see a thin frame of indecipherable symbols. One looks like a gear, near the top. That's Settings. There are more opt-outs there, and above all to avoid the ads, you'll want to turn off the setting that lets you search 'the web' from the search bar. For until you finish typing what you seek, you are pommelled with ads. For Edge, you have to elect some other url as your home page, to get out of msn and its ads, bombarding you as soon as you load Edge. To get a different search engine other than Bing, you have many more steps.Rocky Bennet in this forum had the brilliant solution of just saying 'www.google.com' as his home page. That kills two birds with one url.
Then and only then, is your username likely free of 'sharing', when using Windows 10. So now you can shut it off, and then when you turn it on again, you will be given an option to boot in Windows 10 or 7. If you do nothing, it will boot in Windows 10. Note: only your username has opted out. Those default settings remain for any new usernames you create, so you'd have to repeat Steps #9-10, every time you create a new user.
If you like Windows 7, you'll probably not like Windows 10. So go get Classic Shell (free download, google on the name), to make the transition easier. Create a lot of desktop shortcuts and then a Desktop toolbar (same procedure as for Windows 7), in order to customize your own menu. For you cannot really customize the Win10 Start Menu. It's just the Windows 8 start screen, but now made a long vertical list which takes forever to scroll through. You cannot customize the font faces, and there's only one theme, which is modified Aero (glassy, the task bar and menu change with the pictures). Copy your pictures in Windows/Web/Wallpaper, to get a true 'slideshow'.
Does all this help?
Edited by brainout, 24 July 2015 - 05:22 AM.