First of All . The crashing could be a conflict that your HDD is 3TB . Usually Wii USB Loaders only allow 2TB as maximum.
But if its not ...
Format your USB-device the right way: (If your HDD is WBFS and have alot of games - use instead
WBFS2FAT to convert the USB-device)
Important! about WBFS2FAT : I've not tried it yet. Ive a USB 1TB with 300 Wii games. And I heard wbfs2fat is a great tool but Im still scared if I got an error and lost all games. My option is to transfer all games to another USB-device. Then format my first USB using included guide , and re-add all games again . )
How to Format and Partition USB-drive to FAT32 (Gamecube compatible)
Format your USB to
FAT32 with cluster size
32kb using
EASEUS Partion Manager. Also make the partition
active and
primary and
first (USB1). Create a folder 'Games' inside the partition for all Gamecube Games. Guide for EASEUS Partion Manager can be found here:
https://sites.google.com/site/completesg/prepare-sd-usb . A recommend formula is to put everything on USB1:/ i.e.
*USB1:\games\ - Gamecube games
*USB1:\Wii\ - Wii games
*USB1:\GxEmunand\ - Wiiware/Virtual Console (Read Step 6)
*USB1:\Retro\PSX, SNES, SEGA, NES, N64, GameBoy Advance, NeoGeo/PC Engine (
RetroArch)
I Still use SD-card for anything Homebrew related (Apps and such)
.
After your Formated your USB-device .
Add your Games by downloading WiiBackupManager (
download link) Its very easy .
Once Downloaded open WiiBackupManager.exe .
Press Drive 1 - In 'inactive' select your USB-drive . Press 'Files' - click 'Add - Files' and choose your game iso - Then click Transfer - to Drive 1 - that will start transfering your game from PC into the USB-device .
A more detailed guide of all this can be found @
http://www.hacksden.com/showthread.php/188-Wii-Hard-Drive-Fat32-Guide
Edit : Also be Smart and add 1-2 Games first to see if they're playable/viewable in WiiFlow , USB Loader GX or CFG Loader .