Thanks for the steps you outlined, I'm in the process of trying the Downgrade option. In the meantime, I was able to boot from the Vaio Rescue USB drive I created using the Vaio Care software to clone the Windows 8 installation from the original HDD (a mechanical drive) to the Samsung SSD. When I go to Computer Management in Win8 I see the SSD with 5 partitions:
- OEM Partition (260MB)
- Recovery Partition (1.44GB)
- EFI System Partition (260MB)
- Recovery Partition (37.29GB)
- Primary partition (160.12GB)
These add to a total of 238.35GB, but the Samsung SSD is a 256GB HD. What happened to the remaining 17.65GB?
Ok, so I first tried the Downgrade option without success. I followed the steps outlined here
. I disabled Secure Boot from the BIOS so step 2 showed FALSE and booted the laptop from the DVD drive with the Windows 7 installation disk inside. It showed "No OS present". Maybe I should create a custom installation DVD to make it UEFI-compatible?
I then proceeded to try your suggested 2nd method. I enabled LEGACY in BIOS (disabled UEFI). Then set boot order to Optical Drive first and HD second. There is no option to set SATA controller to AHCI in BIOS. I then saved and booted from DVD and completed successfully the Command Box steps. I then continued with Windows 7 installation and the process completed successfully, it now shows 64 bit!. However, if I set the Boot menu in BIOS back to UEFI (instead of LEGACY), it will not boot (the screen displays "No OS present"). So I'm forced to use this Windows 7 installation in LEGACY mode. Will this impact the system performance as opposed to using UEFI? If so, should I keep trying making Windows 7 usable in UEFI mode? I won't install updated drivers+programs/data if LEGACY means some sort of handicap as opposed to UEFI. Thanks again