On a first DUI offense, you can lose your license for up to:

If you are convicted of Driving Under the Influence (DUI), you are subject to penalties imposed by the courts as well as administrative action taken by the DMV. The court can revoke your license for one year if you are convicted of a first offense, for three years if convicted of a second offense, and indefinitely if convicted of a third offense. Court action may also include assignment to an Alcohol Safety Action Program, fines up to $1,000, and a jail sentence.
DMV Writen Test