I 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 RepliesI've seen something about com.apple.boot.plist, but I need a little more further information. After type: Code:
ioreg -p IODeviceTree -w0 -l | grep firmware-abi
I receive the following from terminal:
Code:
|| "firmware-abi" = <"EFI64">
Looks that I am able to run 64-bit kernel.
My computer is a white macbook early 2008. Core 2 Duo T8300 2.4GHz.
Yes 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.
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.
Model Name:Â MacBook ProModel Identifier:Â Â MacBookPro3,1Processor Name:Â Â Intel Core 2 DuoProcessor Speed:Â 2.4 GHzNumber Of Processors:Â 1Total Number Of Cores:2L2 Cache:Â 4 MBMemory:Â 8 GBBus Speed:800 MHzBoot ROM Version:Â MBP31.0070.B07SMC Version (system):1.18f5Â Â
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? Â 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.Â
Info:
MacBook Pro, Mac OS X (10.6.8)
I convinced/helped a friend upgrade her 1.83Ghz CD MacBook to Snow Leopard. It has not been a smooth ride. Right off the bat there have been persistent and recurring DNS problems. She has also found that it won't shut down without her going through and quitting or force quitting open apps--skype being of particular issue. Tonight she had a kernel panic, it seems. It appears skype is the problem app, but this didn't occur before the SL upgrade. Is it coincidental or correlated?
View 2 Replies View RelatedI 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!
How to do a safe reboot on my MacBook Pro when kernel panic message appears?
Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)
Just wondering what the thoughts everybody was having regarding loading Snow Leopard with a 32bit kernel (i.e. "normal" install) or 64 bit kernel (i.e. holding down the "6" and "4" keys during reboot).
View 8 Replies View RelatedIs there something about the hardware on this iMac that will not let SL run in full 64 bit glory? It loads 64 bit kernel, but did that in Leopard as well. SL loads the 64 bit kernel but not the rest of it... of course holding the 6 and 4 keys results in no joy. So now I suspect it is not just the CPU that must be a 64 bit ready chip but the rest of the hardware must be like wise optimized.
View 5 Replies View RelatedI am pretty new to the forums but I installed snow leopard on an 2008 iMac 2.4 ghz, 3gb of ram and 250gb hard drive on September 1, 2009 and had no problems shutting down.
Then on Wednesday when I shut down it goes into a kernel panic and tells me to restart. When I go into the other user account it does not do that. I have a picture of the error log that i got when I started the computer up to submit to Apple. Can someone please help.
I have reset PRam, repaired permissions, and reinstalled Snow Leopard but recovered it from a Time Machine Backup. I do not know what to do.
First the bad news - consistent kernel panics
Good news - found a remedy in disabling my screen saver.
I'd like to use my screen saver without getting kernel panics. I've tried erasing my drive and restoring from a back up. resetting PRAM, repaired permissions and ran Tech Tool Pro 5 (file structures and repaired permissions, everything else checked out fine).
I'm running a MacBook Pro (15-inch, Mid 2009) and am getting daily (sometimes multiple daily) kernel panics. It's been months since hardware changes (upgraded to 8Gb RAM, quality modules that work fine on other identical Macs). Today is the first day that it's happened more than once, but I hope that's not a sign of things to come... Here are Pastebin dumps of the Problem Report, System log, and Console log.Â
I haven't done any serious software updates in a while, but I did set up a Windows XP VM in Parallels Desktop, which has been running during most kernel panics. Maybe bad drivers that are incompatible or need updating? It sometimes runs for hours before a panic, so I don't think running in Safe Mode would be effective (unless I take it home overnight, which I may try). It seems that my problem is similar to another thread I found on this forum, but mine is a bit different, and I don't run any microsoft hardware (Logitech keyboard and mouse).
Info:
MacBook Pro, Mac OS X (10.6.8), 15" 2009, 2.66GHz, 8Gb RAM
Apple's site about Snow Leopard says that 64-bit *apps* under Snow Leopard will be more secure than ever due to several things:A more secure function argument-passing mechanism and the use of hardware-based execute disable for heap memory.
Memory on the system heap is marked using strengthened checksums, helping to prevent attacks that rely on corrupting memory.
Nerdly question, but does anyone know if any of these types of security enhancements require the 64-bit *kernel* (not just a given app)? My white Macbook (C2duo) is unlikely to run 64-bit unless Apple lets it in their final release (it apparently won't so far as they haven't written drivers for my lowly machine).
I've upgraded my MBP to Snow Leopard today from Leopard and I'm getting a Kernel Panic when I login as one user. Logging in as an Admin user or a new user account is fine, and I still get the Kernel Panic if I boot up in to Safe Mode. It's obviously a problem with the user account and looking at the dump log it seems to be caused trying to mount something, but I can't for the life of me track it down.
[Code]
Installed Snow Leopard (retail box) onto a last-gen Aluminum MacBook Pro (2.6Ghz model). Did a time machine backup. Put in CD and upgraded. Rebooted with no peripherals plugged in and I get a kernel panic. There's only one user on this machine so I can't see if it's an account problem. I did the same thing on both my Macbook Air and 17" MacBook Pro.
Question: Do I have to now Reinstall Leopard (fresh)
Then update Snow Leopard
Then restore from Backup?
OR
Install Leopard
Recover from time machine backup
Then install Snow Leopard
I don't have all day and really don't want to screw up the process. Is there any thing else that might say why this kernel panic is happening?
Whether 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 RelatedOver the weekend I tried to backup my MacBook Pro onto an external harddrive, and when about 23Gb out of 110Gb were completed, my mac went into a kernel panic ("You need to restart your computer. hold down the power button until it turns off, then press the power button again." in four languages). Previous backups went fine. So I did a reformat of the ext. hdd, same thing: after about 20 or so Gb of backup, the msg. pops. otherwise the mac runs without problems. Did a virus check, which came up negative.
Here is the panic log:
Interval Since Last Panic Report: -6 sec
Panics Since Last Report: 1
Anonymous UUID: 7254B2B2-A9E2-40B3-9A00-06A141425C7F
Mon May 28 06:53:53 2012
panic(cpu 0 caller 0x2abf6a): Kernel trap at 0x00270ea8, type 14=page fault, registers: .....
Info:
MacBook Pro, Mac OS X (10.7.3)
So out of nowhere my unibody MBP (specs, etc below) locked up yesterday while I was watching a video using VLC. It stopped responding to anything so I held down the power button until it turned off. I waited about 10 minutes and turned it back on. Grey screen with spinning cog showed up for about a minute and then kernel panic. Held down power button until it turned off. Tried repeatedly - same results. Won't boot into Safe Mode - still get a kernel panic everytime. It will let me boot the machine into Target Disk Mode. It will boot from my Snow Leopard install disk where I ran Disk Utility and "repaired disk" and "repaired disk permissions" on both the drive and the volume. All the "repair disk" and "repair disk permissions" ended with messages in green type saying that the disk/permissions appear to be OK.Â
I have an external FW drive used for TM backups for the machine. A fair amount of data has been added since the last TM backup (which was less than 30 days ago) that, ideally, I'd like to not lose by resorting to restoring from a TM backup. It's not the end of the world if the last (roughly) 30 days of data/changes ends up being lost, but I'm willing to work on getting it back up and running without doing an erase and install and then restoring from a TM backup if at all possible.Â
Definitely if any other information or data is needed from me in order for anyone to assist, please let me know what it is and I'll do my best to provide it.Â
Hardware Overview:Model Name: MacBook ProModel Identifier: MacBookPro5,1Processor Name: Intel Core 2 DuoProcessor Speed: 2.66 GHzNumber of Processors: 1Total Number Of Cores: 2L2 Cache: 6 MBMemory: 4 GBBus Speed: 1.07 GHzBoot ROM Version: MBP51.007E.B06SMC Version (system): 1.41f2Â
[Code]...
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 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 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)
I have this MacBook Pro from a friend and he asked me to repair it. I can`t: boot the Mac OS X install DVD and Snow Leopard , enter single-user mod (freeze), enter verbose mod (freeze), enter safe mod (only the apple appear and nothing happen) and whatever you can think off.I tried to reset using comand + option + o + r and ANYTHING you can think off. It just open with a flashing folder with a question mark on it. Btw i format the hard drive on my windows ( in hfs+ of course).
View 12 Replies View RelatedI have a Macbook Pro 17" with 10.6.8 installed but won't bootup. It stays on the logo and spinning gear screen and won't proceed from there. I have tried to reboot from a Snow Leopard install disk but it won't recognize it and haven't been able to startup from another computer using firewire connection.
Info:
MacBook Pro, Mac OS X (10.6.8), stays on logo and rotating gear
I got a used MacBook Pro 2.53 GHz 17" (Mid-2010 - MC024LL/A - MacBookPro6,1 - A1297) running Lion only.Â
I want to put Snow Leopard on one of the partitions, because I still need to use Rosetta from time to time. The computer didn't come with any installer disks... "no problem," I thought, because I own a Snow Leopard installer DVD (which says "Version 10.6" on it).Â
But it won't boot from that DVD.  The Apple logo stayed on the screen for seven minutes before I gave up.Â
Is that because this computer requires a later version of Snow Leopard?Â
What are my options for getting Snow Leopard onto this thing?Â
I have a MacBook 13" 2.0 GHz with 1 GB Ram and a 80GB harddrive 2006 model. This machine recognizes all ram, DVD, Hard Drive and ng usb etc. seems to work perfectly. BUT, it will only startup if I HOLD the PowerButton down all the way down until I see the the Apple Logo. If I just hit the powerbutton and go, it will t reboot over and over and over. I have bought new ram, nope. I tried a different HD, nope. I disconnected the DVD, nope. It simply won't boot properly. Once I HOLD down the power button to get it running it works fine, sees the camera, BT, WIFI, clock is at right time, all keys on KB work, and usb peripherials. I cannot reset the pram or vram at all, even while holding the power button down to boot. If I just hit the button and quickly press Command option p r it just reboots like always. Does anyone have any ideas??? I'm at a loss as it works fine once booted. While holding the power button to boot it I see my front led flashing and then hear the several beeps and it starts up just fine.
I have pulled the battery, removed the PSU, held the power button for a whole minute battery or power and let it sit overnight like this but nada, still does this.
