This question already has an answer here:
Please note: Whilst the older question (4 years ago) Do MacBooks have a true "Hibernate" option? has answers that show a hibernate option exists for Macs, it doesn't detail how to make your Mac hibernate. Perhaps this is because that answer was sufficient for older machines (Pre-2015 MacBookPro Retina or pre-Yosemite).
I've been a longtime Windows user and was told Apple's Macs were better. I recently bought a MacBookPro Retina 2015 15" OS X 10.10 Yosemite (SSD). I have not been able to make it hibernate.
I have already enabled the hibernate mode number 25 (as can be seen in the settings below).
I was told that the grey screen with the progress bar upon wakeup indicates the machine was hibernating. I managed to get this grey screen to show up after disabling standby.
sudo pmset -a standby 0
I was also told I could check what state the machine woke from via the following command:
pmset -g log | grep -i "wake from"
I ran the command but it still shows that I have always been waking from Standby. This is the case when waking from both AC and Battery. E.g.
Wake from Standby [CDNVA] due to EC.PME/User: Using BATT (Charge:92%) 303 secs
I am assuming that if my machine did indeed hibernate then the grep command should show Wake from 'Hibernate' as opposed to 'Standby'.
This makes me wonder if the OS X
man pmset command, which brings up the pmset commands manual which is dated 2012 is still valid today. Or perhaps I'm just too new to this.
I have also tried 2 deep sleep apps/widgets. Both end up putting the MBP to Standby instead of Hibernate.
pmset -g shows the following:
Active Profiles: Battery Power -1* AC Power -1 Currently in use: standbydelay 3 standby 0 halfdim 1 hibernatefile /var/vm/sleepimage darkwakes 0 gpuswitch 2 disksleep 10 sleep 1 autopoweroffdelay 1 hibernatemode 25 autopoweroff 1 ttyskeepawake 1 displaysleep 2 acwake 0 lidwake 1
PS. Next to sleep it sometimes shows "(sleep prevented by AddressBookSour)"