I'm using the Dropbox Sync for playing the same World on three different PCs, one Linux-machine, two Windows7-machines. All machines have their "saves"-Directory linked into the Dropbox. As long as you don't run Minecraft simultaneously on more than one of these machines, it works pretty well :).
The initial sync is a bit slow because of the many files, and you should turn off the Dropbox Tray Notifications (because they become annoying with so many filechanges). Also, i am using the 0.8.107-Version of Dropbox, which allows syncing symbolic links and selective syncing. I'm not syncing my whole Dropbox on these machines, only the Minecraft-stuff. I'm willing to write an own guide for this, if someone cannot adapt the "Saved Data Dropbox Guide" to my solution.
Question
Windows 7 & Vista: mklink /d C:\Users\<username>\AppData\Roaming\.minecraft "C:\Users\<username>\Documents\My Dropbox\Minecraft" If you get and error Cannot create a file when that file already exists. Try this...mklink /d "C:\Users\<username>\Documents\My Dropbox\Minecraft" C:\Users\<username>\AppData\Roaming\.minecraft
This makes no sense. mklink works this way:
mklink source destination
source = The link destination = The folder you are linking to
This one is correct:
mklink /d C:\Users\<username>\AppData\Roaming\.minecraft "C:\Users\<username>\Documents\My Dropbox\Minecraft"
This one is wrong: mklink /d "C:\Users\<username>\Documents\My Dropbox\Minecraft" C:\Users\<username>\AppData\Roaming\.minecraft
Why are you still suggesting the wrong one if the correct one gives an error-message?
You will only get this error: Cannot create a file when that file already exists if you didn't delete your .minecraft-folder after copying it's content to the new Dropbox-folder.
.minecraft-Folder = symbolic link
DropBox-Folder = the actual folder where the files are stored
New topic:
So couldn't you *technically* write the symbolic link on a flash drive, and load your saves on any other computer? Probably would have to install dropbox first, right?