Ok that helps it is most likeley a 2GB. Here is a link to the disk tool:
Download
Follow this guide! your player is an Ak2025 player.
SOLUTION - Fixing "Disk Error" in hacked AK2025 players
In other words,
open mp3 utilities disk tool
Pick low formatting type
go to the partitioning tab
subtract 1941MB below maximum for the slider.
click partition
Go to my computer and find the 2GB partition (should say about 1.89GB)
Right click and format in FAT *not FAT32*
Go into your players settings and change the disk type to normal only.
Will edit this post later to make it better, i have to go to school now.