Yep. If the DOS version >= 7, it's probably running in virtual 86 mode under Windows. Windows 98SE was the last version capable of booting directly to DOS. And

Yep. If the DOS version >= 7, it's probably running in virtual 86 mode under Windows. Windows 98SE was the last version capable of booting directly to DOS. And then there are the DOS flavors besides MS-DOS such as PC-DOS and DR-DOS. And later, FreeDOS. :] I consider DOS 6.22a to be DOS-"DOS", but 7.1 also works. Back in the day, DESQview is how we ran multiple modem line BBSes on one machine.