For various reasons too long and boring to go into here I have a Lenovo U310 running Windows 8 that I’d like to be running Windows 7 (Flame avoidance: I love Windows 8.1 running on the Lenovo Carbon Touch ;-).
Things to remember if doing this again…
- The OEM license key is embedded in the BIOS (I’d expected it to be on a sticker somewhere…)
- Windows 8 comes with downgrade rights, but only if you’re running Windows 8 Professional. Details are in the FAQ. Fortunately I had a full copy of Windows 7 Home Premium going spare.
- Play with the BIOS (Fn+F2) to get things to boot and to disable UEFI.
- To make a bootable USB follow the steps on technet for using
diskpart. I tried installing from the local drive but the 0×0 error wasn’t the most informative.
- Windows 7 (64-bit) didn’t like installing of the GTP-Partitioned disk. No worries, just grab GParted and nuke the partitions and make a new partition table. (At this point, pause to refill wine glass and ponder the wisdom of just installing a Linux-disto. Remember who will be using this box and think better of it.)
- Boot from the USB into the Windows installer, sit back, sip wine.
- Spend several [insert large unit of time] installing updates and drivers.