B787 flight crew reported air conditioning pack failure and en route diversion.

Narrative

Normal start to the day; we arrived at the airport as scheduled. Scheduled to depart at XA00. We were delayed boarding the airplane for preflight duties roughly 30 minutes. Maintenance was on board and notified us there had been 6 write-ups on the inbound flight; thus the delay. The only major write-up was a Pack Right fail on arrival into ZZZZ. Maintenance said they ops checked it and it checked good. They closed out the write-ups and we started boarding shortly thereafter. Pushback was normal. Takeoff from runway XX was normal. During climb out at 10;000 feet a PACK R EICAS message displayed. The FO was pilot flying so the Captain had him remain flying. The Captain and myself ran the checklist. The checklist called for a reset of the Air Conditioning system; which we did. However; this did not fix the problem and the right PACK remained offline. We started to discuss our options as a crew as the checklist did not recommend or require a divert. We then called Dispatch and they included Maintenance Control in the call. We discussed options for continuing the flight or diverting to fix the problem. Dispatch advised us we had the fuel to continue; even at a lower altitude. But after discussing with Maintenance Control; they were fairly confident we could divert to ZZZZ1 and we would be able to fix the problem by isolating one of the two CAC's (Cabin Air Compressor) that was surging and taking the PACK offline. We then discussed our options as a crew and decided that with almost 9 hours of flying ahead of us with really only one good alternate; it would be best to divert to ZZZZ1. We could then fix the problem and continue on. We advised ATC and told the controllers we would like to divert to ZZZZ1. We advised the flight attendants and passengers and ran the required checklists. The FO conducted an overweight landing in ZZZZ1 with a smooth touchdown. Brakes did not get hot and the firetrucks declared that everything looked fine to them. We then taxied normally to a hard stand. Cause: The main casual factor of the divert was a right air conditioning system that had multiple issues going on. More in-depth maintenance is required to remedy the right PACK.