When booting from the hard disk, a computer successfully loads the Linux kernel and initramfs but hangs during the subsequent startup tasks. The system is booted using a Linux based rescue CD to investigate the problem. Which of the following methods helps to identify the root cause of the problem?
When diagnosing boot issues, it is essential to examine persistent system logs for clues about what went wrong. The /var/log directory contains log files generated by different services and parts of the operating system, including logs pertinent to the boot process. These logs can provide detailed information about errors and messages that occurred during the boot sequence, making it possible to identify the root cause of the problem. Therefore, investigating the files within /var/log on the computer's hard disk for possible errors is the most effective method to troubleshoot the issue.
During boot, the logs are stored in dmesg, but are later transferred to /var/logs when the boot has finished. In this example, it was successfully rebooted with a rescue disk, hence one needs to go look at /var/logs because your OS transferred it there!
dmesg es volatil, todo se queda guardado en log, SIEMPRE, log es lo primero
If you have a look to the dmesg, you will get the live system dmesg. So, need to chroot first, then, dmesg. D is the right answer :)
After dmesg writes the contents of the ring buffer, it ends up in /var/log/messages, hence within /var/log, so C is correct.
la correcta es la D.
I think is C. the chroot might be also correct, but you will not able to use dmesg to troubleshoot the first boot process.
I had a hard time with this one. All options are wrong to me, even option C. It says, "Investigating the file /var/log ...", but /var/log is not a file; it is a directory. It is not well written.
The log after the initialization process by the kernel is completed cannot be found without looking at the / var / log / messages file.