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.
Kernel mode is often referred to as "supervisor mode" or "privileged mode." These terms highlight the level of access and control the operating system has over hardware and system resources when executing code in this mode. Additionally, "system mode" is another term used to describe the same operational context where the kernel can execute critical tasks and manage resources securely.
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.
In System Configuration (msconfig), the "Boot" tab is used to restart the system in Safe Mode. Within this tab, you can select the "Safe boot" option and choose the desired Safe Mode type (Minimal, Alternate shell, or Network). After making your selection, clicking "OK" and then restarting the system will boot it into Safe Mode.
Privileged mode, also known as kernel mode, is a state in which a computer's CPU has unrestricted access to all system resources and hardware. In this mode, the operating system can execute any instruction and access any memory address, allowing it to manage hardware and enforce security policies. This contrasts with user mode, where applications have limited access to system resources to prevent them from interfering with the core functions of the operating system. Privileged mode is essential for maintaining system stability and security.
virtual real mode
LBA Mode, PIO Mode, and Ultra DMA Mode.