I had the same problem.
Before DBAN:
C: - Hard Drive (single partition)
D:, E: - DVD/CD Drives
F:, G:, H:, I: - Media Card Reader Drives
After DBAN:
C:, D:, E:, & F: - Media Card Reader Drives
G:, H: - DVD/CD Drives
I: - Only available drive letter for hard drive
In hindsight, I...