Originally Posted by
FrozenK
People used to do that with mountainbikes ten or so years ago (it was affectionately called "the mullet") as discs only forks became more common.
I think besides cost, your main problem will be finding a fork that fits your frame. To keep the same ride characteristics, you will have to match both axle-to-crown length and offset/rake. Most aftermarket disc forks right now are aimed at CX bikes and may not play nice with your bike's geometry.
I've done (and still) have this on several MTB's and a road bike. Agree with the road bike having to use a CX fork, in my case I used a Lynskey Endurance fork, this has raised the front end significantly, not an issue for my intended bike purpose as it's used for long distance events.
Another issue with disc forks, is most are for tapered headset, the Lynskey along with a few others are 1 1/8th" but there are less of these than tapered ones on the market. What is the spec of your frame? Will this limitation cause an issue?