The Xbox 360 version of Grand Theft Auto 5 will ship on two discs and require a mandatory installation, Rockstar Games has confirmed.
"Grand Theft Auto V is the largest and most ambitious game we have yet created, and takes full advantage of every ounce of processing power available in the current generation of consoles," said Rockstar in a Q&A published this afternoon.
"In order to provide the best possible experience for such a massive and detailed world, the game will have installation requirements on both Xbox 360 and PlayStation®3 systems.
"For Xbox 360, Grand Theft Auto V will ship on two discs; Disc 1 will be used for a one-time mandatory install and Disc 2 will be used to play the game. After the install, players will be able to enjoy both Grand Theft Auto V and Grand Theft Auto Online without any need to switch discs."
The install will require an Xbox 360 HDD or an external 16GB USB drive with at least 8GB of free space.
"A new USB flash drive is recommended to ensure optimum performance," Rockstar adds.
The PlayStation 3 version, meanwhile, ships on one disc and will install roughly 8GB of content "as soon as you insert the game".
"The install is roughly 8GB, and players will be able to play as soon as the install is complete."
GTA 5 launches on Xbox 360 and PlayStation 3 on September 17, 2013. You can currently pre-order the GTA 5 Special Edition for £55.