Where are Linux startup messages?
/var/log/kern
The kernel messages are stored in /var/log/kern.
Which command is used to review boots?
The dmesg command displays the system messages contained in the kernel ring buffer. By using this command immediately after booting your computer, you will see the boot messages.
How do I read var log messages in Linux?
The main log file a) /var/log/messages – Contains global system messages, including the messages that are logged during system startup. There are several things that are logged in /var/log/messages including mail, cron, daemon, kern, auth, etc.
Where is Ntbtlog TXT located?
txt or ntbtlog. txt file on the root level of your hard drive. This is a plain text file that will tell you what’s going on during startup. To enable boot logging, press the Windows key + R, type “msconfig,” then press Enter.
Where do I find messages regarding last failed?
Basically after showing a bunch of [pass] messages, it hangs. It does not hang every time. Now I know dmesg is the way I can see boot messages. But I want to look at the boot messages of the previous boot and not the current boot (because this one booted normally, while last one hanged).
How to display log messages from previous boots under CentOS 7?
Whether journald retains log messages from previous boots is configured via /etc/systemd/journald.conf. The default setting under CentOS 7 is: Where the journald.conf man page explains auto as:
How to see boot log to find a boot problem?
NB when trying some commands from antony@antony then password I get login incorrect. Is that right? For systemd based versions of Ubuntu (15.04 onwards) you’ll need to use the journalctl command to view the current boot log messages (as mentioned in this answer, and here for more info on how to enable them for previous boots):
How to display log messages from previous boot?
Executing journalctl under a CentOS 7 system just prints messages generated after the last boot. and exits with status 1. Comparing it to a current Fedora system I notice that the CentOS 7 does not have /var/log/journal (and journalctl does not provide –list-boots ).