I dont know what to download.
Rockbox Utility should have pointed you
here.
I just wanna make sure cause i dont want to brick my device since i just bought it few days ago.
If you don't deviate from the instructions given, there is a very small risk of this happening.
Also, what drive letter should I mount? Cause im in MSC mode, there are two drives, F and H. F for the sansa itself, and H for the SD card.
Ideally Rockbox Utility's autodetection should do this for you, however, you want to use the devices internal storage.
And how much free space should I have on the internal memory? How about the sd card? Should i have free space on that?
You need at least as much space free as the patched OF binary and Rockbox itself will occupy, ~100MB should be adequate for both.
Go nuts with the sdcard, If you don't care about using the OF for playback just remember to eject the sdcard first if you cram it with files - it'll only make booting the OF and refreshing the database that little bit more painful.
[Saint]