win 10 preview

Please also see this,
Disk Management - Post a Screen Capture Image - Windows 7 Help Forums

i have mounted the iso file to my usb flash drive using rufus, everything completed. i went to bios to instruct the laptop to look at the usb. it showed an error saying something like nothing can be found, insert media and press any key.
i then mounted the iso file with the windows 7 to usb dvd program and same thing happens.

what am i doing wrong?

ThrashZone said:

I believe the closer number would be 85 rounded up,

But keep in mind your Shrinking I suppose your win-7 patition so do not use the maximum it shows,
I post half of the Avalible space if you want to do some cleaning we can use Disk cleanup and cleanup system files and see what it cleans up ?
Disk Cleanup - Open and Use - Windows 7 Help Forums
After opening disk cleanup use the Clean up system files option,
There you'll also see Out dated windows updates that can be removed,
More options will remove all but the most recent restore points as well if your machine is working well,

Then your going to need to defragment your hard drive,
Disk Defragmenter - Open and Use - Windows 7 Help Forums

Then post what the difference is,
Cheers.

Hi yes you must of missed this post ?
https://www.tenforums.com/general-dis...tml#post155472

ThrashZone said:

Hi yes you must of missed this post ?
https://www.tenforums.com/general-dis...tml#post155472

Okay yes you could made it bigger but before we go any further,
You need to Backup your existing C drive preferably to an External device
Is one available ?

From the first link I posted,

Important notes

• Remember, trying out an early build like this can be risky. That's why we recommend that you don't install the preview on your primary home or business PC. Unexpected PC crashes could damage or even delete your files, so you should back up everything.
• If you want to stop using Windows Technical Preview and return to your previous version of Windows, you'll need to reinstall your previous version from the recovery or installation media that came with your PC—typically a DVD. If you don't have recovery media, you might be able to create a USB recovery drive.
• Some PC processors and hardware configurations aren’t supported by Technical Preview.
• To access the Windows Store and to download and run apps, you need an Internet connection, a screen resolution of at least 1024 x 768, and a Microsoft account.
• After you install the preview, you won't be able to play DVDs using Windows Media Player.
• If you have Windows 8 Pro with Media Center and you install the preview, Windows Media Center will be removed.
• The preview won’t work on Windows RT 8.1 and Windows N editions.
• The preview is not available for Windows Phone.
• A small number of older, 64-bit CPUs might be blocked from installing the preview.
• If you're running Windows 7 without SP1, you can only upgrade to the preview by downloading an ISO file. If you install Windows 7 SP1, you can upgrade to the preview by using Windows Update or by downloading an ISO file.

havent got a backup drive.

as i said the issue isnt related to this it is that when i mount the iso to my usb flash drive it obviously doesnt do it correct and i get the message to insert a media and press any key to continue
i need advice to overcome this issue

Then I would stop !
You need to back up your system,
I have to step out for a hour or two please read the tutorial on post # 2 again 2-3 times if necessary,
Ready all notes and follow up links,
There is no hurry is there ?
Cheers.