There have been a couple of occasions where I haven't been able to restart my macbook. Both times I've used this shortcut to restart but I am concerned about the state of the system upon reboot.

The log says:

kernel[0]: Previous Shutdown Cause: 5

a quick search didn't offer much.

Official Apple documentation lists the shortcuts, even the one to Power Off after 5secs without shutting down, with no explanation as to the consequences.

So, are there any documents that explain what exactly happens when this shortcut is used? Does it simply flush buffers, umounts filesystems and poweroff/restart....?

Thanks.

PS: I've already seen this question as regards to the code in the log.

There have been a couple of occasions where I haven't been able to restart my macbook. Both times I've used this shortcut to restart but I am concerned about the state of the system upon reboot.

The log says:

kernel[0]: Previous Shutdown Cause: 5

a quick search didn't offer much.

Official Apple documentation lists the shortcuts, even the one to Power Off after 5secs without shutting down, with no explanation as to the consequences.

So, are there any documents that explain what exactly happens when this shortcut is used? Does it simply flush buffers, umounts filesystems and poweroff/restart....?

Thanks.

PS: I've already seen this question as regards to the code in the log.