IdeaPad Y400 Y500 preinstalled Windows 8 How to retrofit windows 7

Failure phenomenon:

It is not customary to use the new WIN8 system to install the Win7 system, but the system cannot be partitioned during the installation Win7 process.

Tip Windows cannot install to this disk. The selected disk has an MBR partition table. On the EFI system, Windows can only be installed to a GPT disk. ”

Reason Analysis:

This machine uses the EFI motherboard, with the WIN8 operating system and the corresponding BIOS features to achieve GPT partition boot. Causes the installation Win7 to be prompted accordingly.

Solution:

1. Into the BIOS mode, the exit of the OS optimized defaults to the other OS;

2. Verify that boot mode under boot is selected as "Legacy Support" and "Boot Priority" as "Legacy".

3. For the machine hard disk to repartition, one-click Restore function will not be used.