Some quick tables about DOSBox that I kept looking for.

Sound Card Defaults

Sound - DOSBoxWiki

SoundBlaster 16 Base Address: 220h IRQ: 7 DMA: 1 HDMA: 5

DOSBox Commands

Commands - DOSBoxWiki

GoalDOSBox Command
Mount Host Foldermount E: Local\Path
Mount Floppy (to boot)imgmount 0 BootDisk.img -t floppy -fs none
Mount Floppy (to access)imgmount A: BootDisk.img -t floppy
Boot from Floppyboot -L A
Mount Drive Image (to boot)imgmount 2 HDD.img -t hdd -size [Geometry] -fs none
Mount Drive Image (to access)imgmount D: HDD.img -t hdd -size [Geometry]
Boot from Driveboot -L C
Unmountmount -u D:

DOSBox ImgMount Geometry

IMGMOUNT - DOSBoxWiki

imgmount -size [BytesPerSector], [SectorsPerHead], [Heads], [Cylinders] All hard drives (at least that I found or created) had 512 bytes per sector and 63 sectors per head.

Size [MB]Geometry [-size XXX]
64512,63,4,520
128512,63,8,520
256512,63,16,520
512512,63,32,520
1,024512,63,64,520
2,048512,63,128,520
96512,63,4,780
192512,63,8,780
384512,63,16,780
768512,63,32,780
1,536512,63,64,780