Answer Posted / c. anthony francis

When an operating system has a fatal error, it generates a
crash dump file (crash dump). When a process has a fatal
error, it generates a core file.
If a fatal operating system error occurs, the operating
system prints a message to the console, describing the
error. The operating system then generates a crash dump by
writing some of the contents of the physical memory to a
predetermined dump device, which must be a local disk
slice. You can configure the dump device by using the
dumpadm command. After the operating system has written
the crash dump to the dump device, the system reboots. The
crash dump is saved for future analysis to help determine
the cause of the fatal error.
When a process terminates abnormally, it typically produces
a core file. You can use the coreadm command to specify the
name or location of core files produced by abnormally
terminating processes.

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