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Windows 7: W8 downgrade -> Windows 7 doesn't detect HDD during install [FIX!]

14 Apr 2014   #1
TechCP

Windows 7 Professional (64-Bit)
 
 
W8 downgrade -> Windows 7 doesn't detect HDD during install [FIX!]

Maybe this will help some people. It's a little easier alternative if you're in the same situation I am.

->Purchased new laptop with Windows 8.1 factory installed
->Purchased on April 14, 2014

->Laptop has UEFI motherboard
->HDD is setup w/ GPT

->Inserted Windows 7 Professional DVD
->Windows 7 setup cannot find a HDD / requests drivers

======FIX======
1.) Right-click your start button on the Desktop
2.) Choose "Disk Management"
3.) Right-click on your main HDD and choose "Shrink volume"
4.) Choose whatever size
5.) Right-click on the newly created unallocated space and choose "New Simple Volume"
6.) Do NOT format this volume
7.) Insert your DVD/USB/load ISO/whatever and start Windows 7 Setup
8.) I chose not to go online and get the newest updates, but that's up to you
9.) Choose your newly created simple volume
10.) Let setup continue as normal (Your installation will now find the hard drive(s) and partition(s))
11.) Once you're booted into Windows 7, right-click on computer and choose "manage"
12.) Go back to "Disk Management," and delete all your other partitions.
13.) Right-click on your Windows 7 Partition and choose "Expand this volume"
14.) You've essentially performed a clean install

If this proves to be a useful method for anyone else who's recently purchased a Windows 8 computer and is looking to (up)downgrade to Windows 7, I'll update it to be more in-depth and include pictures.

**Note to mods, move this wherever it needs to be and let me know if I need to make some edits.


My System SpecsSystem Spec
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15 Apr 2014   #2
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote:
Laptop has UEFI motherboard
YES & NO, down to your UEFI/BIOS firmware setting.

As this is a OEM manufacturer's PC with Pre-installed Windows 8/8.1.

1) Downgrade to Windows 7.
Downgrade Windows 8 to Windows 7
Warning you must have the UEFI/BIOS firmware setting in Step Three set.

Make sure you read the NOTE at Step three.

2) If Using a USB Pen drive on a PC with a UEFI BIOS.
USB Pen drive need to be formatted to FAT32 as in
UEFI Bootable USB Flash Drive - Create in Windows
Take note of Step 11 for Windows 7.
Also you will need to use a USB 2.0 port, as there are no USB 3.0 drivers in Windows 7.


You will need to buy Windows 7.
My System SpecsSystem Spec
15 Apr 2014   #3
TechCP

Windows 7 Professional (64-Bit)
 
 

I know, Windows 7 was purchased. I was just sharing how I installed it.
My System SpecsSystem Spec
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15 Apr 2014   #4
gregrocker

 

Were you not aware you should boot the Win7 installation DVD to do a Clean Install Windows 7

How to Boot A Computer from CD or DVD - YouTube

If you're keeping it UEFI as implied by setting up the Dual Boot, then you'll need to choose the UEFI DVD choice from the boot menu. You don't mention that you still must enter BIOS setup to turn off Secure Boot on any Windows 8 PC.

If you don't want UEFI you can Bypass UEFI to Install WIn7
My System SpecsSystem Spec
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 W8 downgrade -> Windows 7 doesn't detect HDD during install [FIX!]




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