Hanging Kitchen Wall Cabinets

[madboater]

Hi all,
I am replacing my kitchen, one of the walls was not brick, and I was expecting it to be a stud wall with plasterboard. However the existing cupboards were screwed through the back into the wall.
I have removed a few of the cupboards and cut back some of the plaster. It looks like the wall is made of some form of OSB type material.
Although this is much better than plasterboard, I have never seen this and was wondering the best way to fix the cupboards to the wall? The existing screws went into wall plugs, but as I understood it wall plugs were not needed for going into wood.
Also has anyone seen this style of construction before and can you give any indication of its make-up for future reference?

 

[foxhole]

It's a common method of construction, plasterboard on osb backing, gives extra strength and allow screwing directly without plugs, previous installers obviously did not check wall construction before they fitted.

 

[madboater]

Thanks Foxhole,
When you put it like that it makes sense. Should make the work a lot easier than expected. The ironic thing is that I was ready with a chisel to take back the plasterboard and fix some timber to the stud work! You would not believe the good luck I have had with this project to date.
MB