You can check for errors in your Linux system using the dmesg command.
The dmesg command provides a convenient way to examine the kernel ring buffer, which stores messages generated by the kernel during the boot process and while the system is running.
To display errors, use the -l (level) option with dmesg, followed by the name of the level.
For example:
sudo dmesg -l err,crit
You can use the following levels:
emerg: The system is unusable.
alert: Action must be taken immediately.
crit: Critical conditions.
err: Error conditions.
warn: Warning conditions.
notice: Normal but significant conditions.
info: Informational messages.
debug: Debug-level messages.
To search messages related to a specific keyword, you can use the grep command:
sudo dmesg | grep -i keyword
For example:
sudo dmesg | grep -i sda