We do not recommend using any programs.The best way for defragmenting - copy all files to pc, format USB, copy all files back.Repeat it once you faced defragmenting problem again.You also need a PC program to convert or split games into USB Advance/ExtremeFor loading games by SMB protocol, you need to share a folder (ex: PS2SMB)On the host machine or NAS device and make sure that it has full read andWrite permissions. You can edit the config if you wish to use/create a different partition.All partitions created by OPL will be 128Mb (it is not recommended to enlarge partitions as it will break LBAs, instead remove and recreate manually with uLaunchELF at a larger size if needed).Game files on USB must be perfectly defragmented either file by file orBy whole drive, and Dual Layer DVD9 images must be split to avoid the 4GBLimitations of the FAT32 file system.