Can I install windows 8.1 update 1 on a 30GB ssd [closed]

Solution 1:

When you use the new WIMBoot feature, Windows doesn't requires a lot of space. This feature was added with the 8.1 Update to make sure Windows 8.1 also runs on Tablets with 16GB storage. So 30GB is enough to run it as WIMBoot.

Microsoft explained this here in detail:

Windows Image File Boot (WIMBoot) Overview
What is Windows Image Boot (WIMBoot)?