Sanding an outside shed before stain.

[ReeceT]

Hi,

I am looking to stain the outside shed with the Cuprinol colours in cream. The issue is that the last person to paint the shed only used blue gloss paint and this is now peeling. I would assume that I need to get all of this off as the other paint is a stain.

As the paint is peeling some of it comes off easily but due to the wood having ridges in it some remains in the groves. How can I get this off, would using some sort of sander be the way to go.

Any advice greatly appreciated.

Thanks

Reece