after updating to 10.8.4 my macbook pro retina boots up in 6 minutes

Reset PRAM. http://support.apple.com/kb/PH4405

Start up in Safe Mode

http://support.apple.com/kb/PH11212

Repair Disk

Steps 1 through 7

http://support.apple.com/kb/PH5836

Jonas,

I am having the exactly same problem with my MacBook Pro 15". After updating to 10.8.4 it takes around 10 minutes to start. Just let me know when you solve the problem.

Thanks in advance.

Same here, I have the exact same problem after installing 10.8.4 on my 15" Retina. I've tried resetting PRAM, reinstalling ML from recovery, even restoring from time capsule to 10.8.3 and redoing with combined update. 10.8.3 restore from time capsule was fast booting again, so it's a 10.8.4 thing.

• When you restart you have to wait for about 30-40 loading spins, then the screen goes grey
• Mouse is frozen top left, but caps lock works
• If you plug into an external screen it will detect it and render that same grey screen with the frozen mouse
• You need to wait 5+ minutes then desktop appears

😟

Had SD card in the card slot causing the issue, once removed, everything was back to normal.

Hope that will help.

Spleenule, thanks for your help. I did what you said and my macbook seems to be running well again.

Guys you are life savers!

After 30 minutes on to Apple support, numerous Time Machine restores, full Lion download/install etc. , the last update from Apple kept stopping my machine booting.

When you indicated the SD card slot, I realised my Nifty Minidrive was still in. After removing it, everything is back to normal.

Thanks for this thread, saved me a long trip with my Mac back to the store!

Yep, I thought it was the last update from Apple, but having read Fisions post, I too had a Nifty Mini drive in my 15" MBP. No SD card inside either!

I removed it and my boot time went from 6 mins to 12 seconds.

Boomtown!

Cheers Folks! 😎

I had same issues with VERY slow boot up (up to 10 mins) since installing 10.8.4, never had an issue prior to this. Once I removed my Nifty drive the problem went away instantly even though the Nifty drive didn't even have an SD card in it.

I suspect the issue with 10.8.4 relates to SD card slots regardless as people have had issues with a normal SD card slot in the machine, not just Nifty. I'm just surprised that an empty Nifty would have an effect; but it does!

Glad I found this thread as next step was going to be a reinstall!

*** Thx all ***

My Nifty Minidrive was in but was also empty. I'm not sure why it caused a problem as I've also got one in my MacBook Air and I've had no problems with that after the update.

I'll try it with the Minidrive containing the microSD and see if that works. It's just strange that an empty drive causes a problem as there is nothing for it to try and load at startup

Hi all. After upgrading from 10.8.3 to 10.8.4, 3 days ago,I've made a lot of pictures in vacation and imported them through SD slot to my macbook pro, After that, mac boots minimum 10 minutes with grey screen and apple logo + cursor on the left side on the top of the screen. While puting the SD card into the slot and turning it on it boots in normal way%) 100% problem is in hardware deivers bugs! Who knows how to fix that SD-problem instead of recovering system via time-machine?

Are you booting with the SD Card in or out of the Mac?

It looks like most of the problems occur when the SD Slot has a card inserted at boot. Try it without and see if this fixes your slow boot as what you are describing sounds similar to my experience

If I'm booting without card it boots 10 minutes (with that grey screen). While I inserting the card into mac it boots normally....It seems the problem occured after I've made upgrade and imported photo's from SD...Of course I'm always booting it without card inside...

Oh my heavens, I am so glad I finally found this post. I was having the exact same issue when I had my Nifty MiniDrive plugged in (without an sdcard in it even) and the boot time was about 6 minutes. I had even gone into the Apple Store to speak with a "genius" and his recommendation was effectively to completely wipe and restore. Thanks for posting the info!