kernel mode
Kernel
Safe mode
graphics mode , the system sets the mode to graphics from text mode
Press the F8 key while the system is booting. Then choose safe mode.
Sleep mode.
Single user mode is designed primarily for systems administration. As such, the system will only load minimal drivers and processes necessary for that administration. Most disk partitions will not be loaded unless they are crucial to the administration of the system. Other users are not allowed to log in to the system in this mode. Multi-user mode is the normal mode of the system, with all resources available to users both locally and via the network.
virtual real mode
LBA Mode, PIO Mode, and Ultra DMA Mode.
4 which system?
Yes, you can. You have to boot your system in the Safe mode with network support.
A minimum mode configuration is a 8086 system. It is operated in minimum mode by strapping its MN/MX pin to logic 1. Minimum mode has a single multiprocessor.