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Rescue mode and Emergency mode

Rescue mode and Emergency mode - Linux Tutorial

From the course: Linux Tips

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Rescue mode and Emergency mode

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- [Instructor] When a system has problems severe enough to keep it from booting into a multi-user target, sometimes we can use rescue mode or emergency mode to look around and diagnose an issue. On systems running System D, rescue mode and emergency mode are targets that take the system into a single-user environment. Rescue mode boots a single-user shell, starts some system services and tries to mount available file systems. Emergency mode starts a single-user shell in a read-only root file system. Neither mode enables network connections though so keep that in mind. If a system is damaged in some way, especially if a particular service is broken or the file system is damaged, it may start itself up into rescue or emergency targets if it can't reach the multi-user or graphical targets. And you can boot into either of these targets manually by modifying boot parameters or by isolating the target from the command line. To boot into these targets manually, we'll interrupt the boot…

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