I tried to boot my mid 2009 macbook pro running snow leopard into 64 bit mode by holding down the 6 and the 4 key on the keyboard after shutting it down and then powering it back up again, it won't start up, it's stuck at the apple symbol with the rolling cursor
Info:
MacBook Pro
I did a bit of reading on the internet, and it looks like most computers will not boot into 32-bit mode by default with 10.6. It appears that if while booting the user holds the 6 and 4 keys, the computer will boot into 64-bit mode.
Does anyone know anything about this? Will the computer always boot into 64-bit mode if this is done once? Will it even make a difference? Will the average user want to do this?
So, with Snow Leopard, there is a 32-bit kernel, and a 64-bit kernel. Correct?
As I understand it, it will boot into the 32-bit kernel by default, but if your hardware is supported, you can select the 64-bit kernel.
My question is - where is the list of supported hardware, and how do you select the 64-bit kernel?
My confusion comes from several posts and various articles which all say the first-gen aluminium iMac has a 32-bit EFI, and therefore can only boot into the 32-bit kernel. But I've just downloaded an app called Startup Mode Selector, which shows you your system config, and it says I have a 64-bit EFI.
I installed Snow Leopard last night and since, I have been trying to boot it into 64-bit mode. I have tried holding down the "6" and "4" keys at startup, but that did not work.
Late 2008 2.4GHz Aluminum MacBook
Model Name: MacBook ProModel Identifier: MacBookPro3,1Processor Name: Intel Core 2 DuoProcessor Speed: 2.4 GHzNumber Of Processors: 1Total Number Of Cores:2L2 Cache: 4 MBMemory: 8 GBBus Speed:800 MHzBoot ROM Version: MBP31.0070.B07SMC Version (system):1.18f5
I know this has been asked numerous times, but most of the answers I found were old and archived. I was wondering whether or not an update or a guide has been released which allows a successful boot into 64bit kernel? On a side note, I have verified my computer does have EFI64. However I know in the past that this stil didn't enable a 64bit boot.
Info:
MacBook Pro, Mac OS X (10.6.8)
I know by default that Snow Leopard starts up in 32-bit kernel but anyone here boot into the 64-bit kernel? I think to do this you'd have to hold down 6 and 4 keys while booting.
By now almost all 3rd party apps are running 64-bit and all this time I've totally forgot about the 64-bit kernel!
I've just booted up to 64-bit kernel and all apps load instantaneously!
Contrary to belief, Snow Leopard by default (except for Xserves) runs in 32-bit mode. Check for yourself.
Code:
uname - a
You should see something similar
Code:
root:xnu-1456.1.25~1/RELEASE_I386 i386
I forced it to 64-bit on my '08 Mac Pro and things were slower! Spaces was very slow. Dashboard was quirky. I say avoid it.
I recently installed Snow Leopard. It works faster than before and it gave me 8GB of space back. But, after looking through Applications in system profiler, I found out iTunes is not 64-bit unlike Safari and other native applications that have been re-written to 64-bit. I remember Apple said iTunes is also re-written. I must download a new version or it's included in an update (I'm waiting the 10.6.2 update to download at the moment)?
View 9 Replies View RelatedWhether anybody got Snow Leo build 10A380 (WWDC'09) successfully running with 64-bit kernel? If 'yes' - please share your method. I've tried every approach that i know: "6+4" keys, arch=x86_64 flag specified for both nvram and com.apple.Boot.plist, lipo command against mach_kernel.
View 24 Replies View RelatedMy brother has the first generation of the iMacs that has a Core duo processor (not Core 2 Duo). Will snow leopard work on it? On Apples site, it says that you need a Intel processor to run Snow leopard, but then below it says you need a 64bit processor which is what he doesn't have.
View 3 Replies View RelatedYes you read that right. Your brand spanking new MBP will use a 32-bit kernel as default.
You can force 64-bit kernel but some of your hardware will not be working.
So all that marketing crap about the benefits of 64-bit etc are all B.S.
I don't want a million threads about how this will not effect the running of 64 bit apps, etc. because it will. Your 64-bit app will run but it will not be able to address more than 4Gb of RAM.
There are also many more advantages to having a 64-bit kernel.
I have a white 24" iMac with a Core2 Duo processor, running Snow Leopard 10.6.3.
The new Photoshop CS5 extended software can run on 64-bit.
I know it also depends on the processor's firmware. Will my iMac be able to run Photoshop CS5 (comes out June 30th 2010) in 64-bit mode?
I'm new to using Windows on a Mac but need to do it now for some video rendering applications that have transcoding, filtering, effects (like VirtualDub) that are only available on a PC.
I have a 17"MBP (3 months old), 2.8Ghz Duo, 4Gb RAM. I recently upgraded to Snow Leopard, was excited about 64-bit though I'm not an expert, I just heard it would be faster.
I didn't realize SL doesn't boot 64-bit anyhow, that you need to hold "6" & "4" at startup to get it to boot in 64bit mode. This surprised me because I figure many people assumed SL was 64bit! Just getting it to boot properly was a hassle. The 6 & 4 trick didn't work for me.
I had to edit the preference file which wouldn't save at first either because of permissions (I had to drag it to my desktop, edit it, save it, then drag it back to the folder and enter in my administrator password).
Only then did I realize my brand new eSATA Express Card didn't work in 64-bit mode. Upsetting because I just bought the hot new Sonnet Tempo card for $200 that claims to work with Snow Leopard. So until it works I'll be running 32bit mode on my Mac.
But if I want to run Windows 7, does this mean I can only run the 32bit version?
I have a bit of a problem: I cant access my Mac because I lost the password. I recently changed my passwords on several macs, including an old PPC PowerMac G5 from ca 2005. I run 10.5.8 on this and it works flawlessly. I need to use this machine for important work.
So this is what I have tried so far:
1) Tested with all known passwords I have used in the past.
2) Tried to boot from a 10.6 install DVD
3) Tried to boot from just C and later Command C
4) Tried a different install DVD 10.4 (I dont have the original 10.5 DVD)
5) Tried to use T and Target Disk Mode from an iMac with Lion. (disconnected all other FW disks etc.)
6) Tried different Firewire cables
7) Tried different Firewire connections.
It starts obediently and show every sign of Mac-Happiness. But I simply can't get the darn thing to boot. I think it normally should have booted using 10.6?
Can vista 64 bit use all 8 cores of the mac pro when running under boot camp? And can you set how many cores vista uses if running under vm ware? Looking at getting one end of the year but need performance on windows still.
View 14 Replies View Related I am an utter newbie here, and I just got an late 2007 iMac the one with 2.4ghz Dual Core and the ati2600 320gb HD Model for a great price.
I need your help diagnosing this early 2007 Macbook Pro running the latest version of Snow Leopard. It isn't mine, rather my sister's, so I don't know the full details of everything as I don't see her all the time. Last December, I swapped in my 160gb 5400RPM SATA drive from my late 2006 MBP into her MBP as I had just bought and installed a 500gb 7200RPM drive into my MBP. I installed a fresh copy of Snow Leopard onto her machine, patched it up, and sent her on her way.
A few weeks ago, she came to me saying she was having trouble booting into OS X and was just having trouble using her laptop in general. The hard drive wasn't making any erratic noises, so I figured the system install had corrupted itself. The problem was I wasn't able to boot to the Snow Leopard DVD. The DVD would show up at boot when holding down the Option key to show boot devices, but when clicked, it would show the Apple logo, then the "prohibitory" symbol and the fans would spin up on full blast, with no further progress.
Booting into Single User mode, I was able to run disk repair and after running it over a few times, I was told the drive was without errors, the laptop booted fine (minus the booting to Snow Leopard DVD) and I gave the MBP back to her.
Fast forward to today, she's having issues booting in to OS X again. It'll show the Apple boot logo, but the small spinning circle will freeze, and the whole laptop will come to a halt. I still can't boot to the DVD either, with the same symptoms as above. I'm sure I can boot into Single User mode, run Disk Repair, and probably be good, but I want to attack this issue at the source.
Is the hard drive I've got in her MBP going bad (I can't hear any of the erratic noises you hear when you know a drive is going bad)? What else could it be? What about the inability to boot to the Snow Leopard DVD? What is the problem and how can I fix it? Thanks, and sorry for the long winded post.
I want to reformat my hdd and split it on few partitions but i get following problems
- Disk utility doesn't allow to split it, i check it in single user mode, nothing works
- Doesn't want to boot, I tried to boot it from external hdd, usb, cd, dvd, nothing works, I just see Grey apple and that's it,nothing happends
I left it even like that for whole night and nothing happened..I did scan disk, check blocks etc. no errors :/ it give me some filesystem error (which i googled and it sayd you need to boot from different partition so it will work) c, cmd r, doesnt work..starting with opt key gives me list of devices but it freezes after My macbook pro is from mid 2010, 8 gb of ram (i did change it by myself, but works perfectly)The os snow leopard works perfectly, but I need to split the partition..Tried to reinstall os but it stops after restart (in middle of instalation) , it gives me grey apple and thats it.I don't have original dvd, lost it some time ago, can't get new one since I moved to middle of nowhere(no apple shops or anything)single user mode commands would be most helpful, id just format the hdd and split/reinstall the os from zero..Is there any chance to reformat/partition hdd from single user mode? or any software that I can boot from ?
Info:
MacBook Pro (17-inch Mid 2010), Mac OS X (10.6.8)
I have downloaded the RC version of Windows7 64bits. I burned a DVD with 1x speed but when I tried to boot via DVD (pressing option key) it shows 2 option for DVD, Windows and EFI. I tried both and none worked. The Windows version starts and a DOS menu appears with 2 options which doesn't show what it is and then it freezes. The EFI option freezes imediately on the boot screen.
View 5 Replies View RelatedDoes anyone know if or where these are uploaded? My Snow Leopard disk refuses to install 64bit ones because i am on a 2006 Mac Pro. I've previously been running the Boot Camp 2.0 64bit drivers from the 2008 Mac Pro and they've worked just fine in vista.
View 10 Replies View RelatedJust about to buy a Imac 27 i7 with the SDD and 2TB, where I also will run Windows 7 (64bit). Is it ok to make to partitions on the SDD for MAC OS and Win7? Never had a SDD HD before, so just want to be sure to partitions works as always here.
View 3 Replies View RelatedI have a MacBook 4,1 with Intel Core 2 Duo processor 4GB Ram. It is taking over 10 minutes to boot up past the gray apple screen when I turn it on. First I cleared the PRam (?) then I checked the disk using Disk Utility Verify, and it said the disk needed repairs. So I ran the disk repair and it said it was unable to fix the errors on the HD.
I did a little research and tried booting into the Single User mode, then running /sbin/fsck -fy. It said that it found errors but could not fix them. I ran it two more times as suggested and got the same result each time. I then tried rebooting and now instead of taking 10 minutes to boot up, it takes about 5 minutes on the gray apple screen and then just turns off. I started in Verbose mode to try to troubleshoot the error and it appears the last thing to come across the screen before power down is a message "Apple Yukon 2: RxRingSize <= 1024....etc".
I decided next I would run the Apple Hardware Tester. The test came back with an error code "4SNS/1/40000001:IG0C-0.265". I am very good at searching the web but I could not find any errors that had the IG0C or IGOC or any combination at the end, but plenty of 4SNS/1/40000000(1) errors with different endings. From what I can tell people are saying anything with 4SNS/1/4000000 is a logic board failure, but this computer was literally just booting this morning until I did the /sbin/fsck -fy.
Info:
MacBook, Mac OS X (10.5.6)
I'm having some problems with Snow Leopard, in 64 bit mode. Is there a way to turn it to 32 bit ? I'm using a Mac mini 2.53 GHz Core 2 Duo with 4 GB (the max it will ever have), so I don't think it needs 64 bit.
Is there any advantage/disadvantage to run in 32 bit, if you just have 4 GB of ram ?
Sleep Mode does not seem to be working automatically in Snow Leopard. It sleeps when activated from the Apple Menu but not when set to sleep in Energy Saver Preference Pane. The screen dims, goes black but the computer does not seem to sleep nor does the hard drive spin down. Anyone else having a problem like this? It was working fine in Leopard (just noticed this problem now, but have had Snow Leopard installed for a couple of weeks and never noticed it)
View 5 Replies View RelatedI was planning to get Snowey and a SSD at the same time, but the latter had to wait. So far, I�m seeing at least a ten seconds improvement in boot time with Snow Leopard:
17" Macbook pro unibody 2.93 Ghz, 4 GB ram 7200rpm HD
before SL: boot up from 39 to 55 seconds
after SL: boot up time from 30 to 39 seconds
Ok, so there is no interest in this topic.
For me boot time is a rather important criterium.
And I think the fact that SL reduce this with almost 10 seconds is AMAZING.
It just hangs at the spinning pinwheel. I shut the machine off and booted it into Verbose-mode (Command-V) and it stops at "Initializing Power Manager" or something very early on. I pulled the battery and unplugged the machine, am letting it cool off (not that there's a point) -- it's one of the original MacBooks that had that "shutoff" problem with the wire that'd melt and short to the heatsink but mine never had the issue because I wasn't using it very often at the time. Any ideas? The drive does show up when I hold down Option.
View 24 Replies View RelatedI have been trying to boot into 64-bit kernel in Snow Leopard on my Late 2008 Aluminum MacBook (2.4 GHz), but it is not working. It is running the 64-bit EFI firmware and is updated to 10.6.1.
View 9 Replies View RelatedMy leopard installation was giving me a lot of headache so I thought of doing a clean install. Now that Snow Leopard had been out for quite sometime and many issues solved; I thought of installing it instead of Leopard. All I did was follow the instructions to install Snow Leopard [the only option with Snow Leopard was that it did an "Archive and Install" kind of thing by default]. It did take a lot of time [1 hour?] and I was finally taken to my desktop. I looked to check if everything was okay. Though there was nothing spectacular about Snow Leopard. I shut the computer down. Today morning I get this and I can't boot.
View 4 Replies View RelatedAfter dropping my macbook I had a black screen with just a cursor that would move though could not perform any actions. After reseting pram and smc, i now get to the screen with the stars and what looks like the aurora borealis or whatever. The cursor is there though nothing is happening when trying to click and when i press any keys, i gent that *dunt* noise indicating i have tried an invalid action. Does anyone know what might be the problem? I m hoping i wont need a new hd or mobo. This is my first time on the apple forums.
Info:
MacBook, Mac OS X (10.6.4)
I couldn't find my problem between discussed Issues in the forum.
when i insert my DVD into my ROM, i doesn't boot from it, and it ejects automatically, i can boot other OS, Like WIndows or Linux, if i take to service somewhere it costs alot, the boot page (White page, by holding "Alt Option Key") doesn't recognize the DVD, and it does other OS DVDs.
Info:MacBookPro, Mac OS X (10.6.4)
