Originally Posted by Dopedangel
By main memory he means internal sd card thats separate from the memory used for apps etc
If that's the case, it's similar to my Archos tablet. In the Archos design, there are 3 storage areas:
1) a first chunk of the RAM comprising main memory used for Android apps
2) second chunk of the RAM which simulates an sdcard, but is really just RAM mounted at /sdcard
3) the real (optional) sdcard, mounted at /sdcard/sdcard. This is mostly used to store media files, etc., as Android apps that automatically use the sdcard expect to see it at /sdcard, not at sdcard/sdcard
I wonder if he's got a similar arrangement where his sdcard is mounted at an unexpected location.