Accessing the /samples/ partition, etc.

Windows recognized both partitions, BOOT and samples, as separate drives.

I was able to add samples to it from Windows, but like you said, SamplerBox refused to mount the FAT32 samples partition.  I personally think that's a huge flaw.

Nevertheless, I'm grateful that SamplerBox exists and I hope I can still find use with it. 

I'm going to just concede and just use a smaller SD to boot from, and use a thumbdrive for my samples.

*Sigh*