General Question

XOIIO's avatar

What's the deal with the hibernate feature?

Asked by XOIIO (18320points) June 10th, 2011

So I read upon the hybernation feature, and read that it draws a miniscule amount of power to save whatever is running over long periods of time. I put the computer in hibernate to take it apart to clean it, removing the battery, hard drive and DVD drive. I put everything back, started it up and it said resuming windows.

wtf? All power was gone from the hard drive, and the battery wasnt there to power ram or anything, so what realy happens when you put the computer in hibernate?

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8 Answers

ragingloli's avatar

I thought it was the sleep function that suspends the system to RAM, with the Hibernate function storing the system state to the Hard Drive, which requires no power.

XOIIO's avatar

@ragingloli Well something is messed up, it must be the source that I was reading from cause they said that it uses the smallest amount of power.

meiosis's avatar

Hibernate definitely requires no power.

jaytkay's avatar

What @ragingloli said. Hibernate stores a snapshot of the current state to the hard drive and shuts down.

‘Sleep’ is running with miniscule power.

mrentropy's avatar

Hibernate uses the smallest amount of power because it is, in effect, turned off. But all modern PCs draw a small amount of power when off so they can turn back on, since there usually isn’t a switch on the power supply itself. Just like modern day TVs, stereos, etc.

zenvelo's avatar

When you removed the battery, you probably killed any power source at all. So the computer had to reboot from scratch.

You don’t mention what type of computer or what operating system you are using; I had an old PC that if you put in “hibernate” it would have to boot up again.

XOIIO's avatar

@zenvelo It didn’t start from scratch, and windows 7

meiosis's avatar

With hibernate, the PC itself boots from scratch (goes through BIOS POST etc), but then Windows is loaded very quickly from the settings that were stored when the system was hibernated.

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