UEFI BIOS does not see the the Operating System (Dell Inspiron 7720)

Question

Hello! I would like to ask for help from you, they slowly give up. My problem is the following: I have a dell 7720 laptop, which I would like the Windows 7 install on a SSD msata. I set UEFI, everything is OK, it loads the installer, run the install halfway, and it's the first reboot, the BIOS can not find the half-installed Windows, and start over again ... I have tried everything, I have the BIOS is re-installed. Windows 8 is also doing the same. The funny part about it the same way I did two months ago and everything was fine, the machine worked, I just wanted to make Windows 7 the next and 8 easyBCD replaced with the sequence, and then he died doing it every since. Maybe this program (easyBCD) I reached into the BIOS to do a bios update bios reset and not restore?? If you do not install uefi, but then a traditional HDD for no reason, and the SSD is not uefi does not work. I think the BIOS is going to be something, because I see the following installation to set up the UEFI, and partition, but the BIOS does not recognize (ran half the installation and over again to start because UEFI boot is not displayed you installed.) If you set it that boot device is added, it will print that you can not find a file system, but if I turn off the traditional boot then you will find the first installed unfinished Windows, you add the boot list, and then I went to the BIOS settings, restart, and again, you do not see your operating system. (none of what I just set it boot list) Help me, please! (Sorry for my bad English, I'm Hungarian)

ejn63 · Answer

It's not easy to get Windows 7 to work alongside Windows 8 -- certainly not in UEFI mode. If you really want Windows 7, consider running it in a virtual window under VMWARE if you want to keep Windows 8 in GPT/UEFI mode. Otherwise, you're in for quite a bit of trouble as you'll see:

www.eightforums.com/.../17864-need-more-help-win-8-7-dual-boot-uefi-gpt.html

forbence · Answer

But I can use this mSATA SSD a boot drive since 2 months, until the reinstallation.

ejn63 · Answer

I think you'll find the mSATA drive in this system cannot be used as a boot drive. It can only be used as a caching drive.

ejn63 · Answer

With what OS?  And are you now trying to replace Windows 8 with Windows 7?

forbence · Answer

I tried Windows 7 and Windows 8 as well. I would have liked to have 2 operating system

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