Long story short my last Xbox got the red ring of death and I threw it away with the hard drive because back then I thought xbox slims hard drives were permanently connected. I recently got a new one and it didn't come with one so the most memory it can hold is 4g. Do you think it can hold all of FONV:DLC with that amount? I don't think I will install couriers stash if that makes any difference. If not will a memory card help because I really don't feel like paying another 80$ for a new hard drive.

The game alone requires at least 5 GB iirc, and each DLC is anywhere from 250 to 450 MB on 360, so probably not.

Well, I never really install my games, only the DLC. Do you think that will work? Somewhere I read 1000 MB= 1G but I'm not sure how true that is. IF all else fails I guess I'll just be stuck with GRA because that's only 88mg.

Here's how it works:

1 kilobyte (KB) = 1024 bytes
1 megabyte (MB) = 1024 kilobytes
1 gigabyte (GB) = 1024 megabytes

So if the DLCs total out to be (and I'm just making this number up) 3400 megabytes, it would take up around 3.4 gigabytes.

Here are the actual numbers for how much memory each DLC takes up:

Dead Money: 248 MB
Honest Hearts: 254 MB
Old World Blues: 409 MB
Lonesome Road: 451 MB
Gun Runners' Arsenal: 58 MB
Courier's Stash: 10 MB

So if you add all of those up you get around 1500 MB total, which is about 1.5 GB. Now I don't know exactly how an Xbox 360 works, or what it means to not install games to the hard drive, but if it means that the game will take up zero space then it would be very possible for you to get all of the DLCs.

Thats why you don't be daft, go buy the disc if you havent already, and then your xbox should be able to hold it all - granted you don't download anything else.