HT1492: Mac OS X: How to start up in single-user or verbose modeLearn about Mac OS X: How to start up in single-user or verbose mode
Currently Being ModeratedOct 7, 2012 9:54 AM (in response to iamhim200)
See Booting to and managing verbose mode in OS X | MacFixIt - CNET Reviews. Verbose mode simply displays what is going on during the startup process.
Currently Being ModeratedSep 30, 2013 5:28 PM (in response to NCC-1701a)
They are saved in a log file.
Open your Console Application (/Applications/Utilities/Console) and check the system.log and view boot sequence
Or, open Terminal and type:
sudo dmesg >> ~/Desktop/kernlog.txt
to save the contents of the boot up sequence from last boot until now to your desktop.