Non-volatile random access memory; RAM that doesn't lose the stored information when the power is turned off, unlike traditional RAM

learn more… | top users | synonyms (1)

0
votes
1answer
43 views

(Update Needed?) after PRAM reset, File Vault seems bricked

After many system instabilities and freezes I was suggested to do a PRAM reset. When I boot now and the File Vault asks for the password to decrypt the SSD the Guest user is gone and my user lost his ...
0
votes
0answers
20 views

Is there default setting for keyboard backlight in nvram?

When I boot my Macbook Air the keyboard backlight is off but is turned on when I log in. So I'm guessing this is turned off by default in nvram but I can't find the parameter to set. Is there one?
0
votes
1answer
56 views

delay after opening lid display dark until key pressed

okay so my MBP Mid 2010 was took a little tumble (it was in a felt sleeve which was inside a backpack) today and since has been acting weird. when i open the lid, the login screen does not come back ...
0
votes
0answers
91 views

Mac goes to 'OS X Utilities' on boot

I have Mac Book Pro running Mountain Lion. I reset the PRAM due to some issues. But, after the reset of PRAM, the machine behaves abnormal. When start the machine, it goes to 'OS X Utilities' screen. ...
0
votes
2answers
170 views

nvram -p shows “LocationServicesEnabled %01” … does that mean I have a GPS?

What does LocationServicesEnabled mean on a MacBookPro Retina?
1
vote
1answer
338 views

Troubles with resetting PRAM

I followed Apple's instruction to reset PRAM ("Press and hold the Command-Option-P-R keys before the gray screen appears.") and the only thing that happened was that my Mac rebooted repeatedly until I ...
4
votes
1answer
2k views

How can I view/inspect my Mac’s Parameter RAM (NVRAM)?

Inspired by this question I started looking for apps that allow to read the data saved in my Mac’s Parameter RAM. Aside from a very antique (pre OS X) application for Classic, I could not find any. Is ...
0
votes
0answers
244 views

Mac OS X Base System interference

I have reviewed what has been written here regarding the Mac OS X Base System and I am still scratching my head. The impetus for this inquiry is how these partitions interfere with booting problem ...
3
votes
1answer
387 views

MacBook Pro will not wake from sleep after installing third party application

I installed an application called Air Parrot that uses air play with an Apple tv to mirror or extend the desktop. I noticed that after I installed it, I am no longer able to wake my Mac from sleep. ...
1
vote
1answer
289 views

PRAM and NVRAM differences and overlap with eachother and UEFI firmware chip

Is PRAM stored on the same NVRAM chip that non-PRAM variables are stored. I always assumed that NVRAM was the UEFI firmware chip on the logic board. Are all of these one in the same (NVRAM - PRAM - ...
0
votes
3answers
6k views

Poor battery performance after SSD install

I recently installed a Crucial SSD into my Macbook Pro (2.66 GHz Intel Core i7), and now the performance of my battery is probably about 50% of what it used to be. I've tried to reset the PRAM, but ...
3
votes
2answers
1k views

Can't reset PRAM and reinstall OS!

I have a problem with my MacBook Pro 2010 13 inch, 2.4 GHz. Originally I had Snow Leopard installed on my Mac, then I was trying to upgrade it to Lion (official version from App Store). During the ...
2
votes
3answers
5k views

How can I reset the PRAM if Recovery Mode keeps overriding the PRAM command?

Lion uses the ⌘ + R to boot into recovery mode. Resetting the PRAM in anything less than 10.7 was ⌘ + ⌥ + P + R. Recovery mode now seems to override the PRAM command. Does anyone ...