Unable to change to GUID partition scheme so Snow Leopard can be installed

Upgrading from OS 10.5.8 to Snow Leopard 10.6.3 on Macbook 4.1 with Intel Core 2 Duo, 2GB RAM. Instructions state "Macintosh HD" can't be used because it does not use the GUID partition Table Scheme. Use Disk Utility to change the partition scheme. Select the disk, use the Partition Tab, select the Volume Scheme, and then select Options.
Problem: The Options button is grayed out. The Partition Map Scheme is Apple Partition Map.
Note: Macbook purchased in 2008, but the hard drive was replaced in April 2011. Hard drive Information:
Name :
TOSHIBA MK1655GSXF Media
Type :
Disk
Partition Map Scheme :
Apple Partition Map
Disk Identifier :
disk0
Media Name :
TOSHIBA MK1655GSXF Media
Media Type :
Generic
Connection Bus :
Serial ATA 2
How do I change the partition scheme to GUID?

This requires that you repartition the entire drive as follows:
Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. At this point you can quit DU and return to the installer and install Snow Leopard.
If you have data you wish to save then you need to backup before doing the above.

Similar Messages

When I upgrade to Snow Leopard/Lion - after installing it are my files deleted and my preferences changed?, When I upgrade to Snow Leopard/Lion - after installing it are my files deleted and my preferences changed?

When I upgrade to Snow Leopard/Lion - after installing it are my files deleted and my preferences changed?, When I upgrade to Snow Leopard/Lion - after installing it are my files deleted and my preferences changed?

If you install those new OS X versions over the top of what you already have, your files and preferences should remain. However, it's a very good idea to have at least one complete backup of your Mac's disk before you try anything like that.

Unable to share a fat32 partition with macs (snow leopard)

i have a hard drive with two partitions in it, im able to share one of them formated for mac, but im not able to share the fat32 partition? what is going on?
it is connected to an imac (snow leopard)
trying to share it with macbook pro and windows pc
please help?
pd: when i use to have mac 10.5 leopard it works without problem, what is different

Try deleting the addressBook database, /Users/username/Library/Application Support/AddressBook/AddressBook-v22.abcddb.
Address Book automatically creates that file from the metadata.

GUID Partition Scheme - Need clean install: can I restore files from TM?

So, here's my problem. I have an Intel PowerMac (first series after the G5) and when I try to install SL I get the following error message: "Can't Install Snow Leopard Since Disk Does Not Use GUID Partition Scheme". I guess it's something related to the fact thet I previously upgraded from an old iMac with a PPC processor (Apple partition vs. GUID partition).
Anyway, accoding to my understanding, the only solution for me is to do a clean install by wiping the HD and re-partitioning it.
Now, my question is: can I use my current TM backup to later restore apps/prefs onto the new SL system? I believe that TM now has an Apple partition scheme that reflects the one I have on Leopard 10.5. Is that right? Will I encounter any problem because of the different partition type of TM?

"Anyway, accoding to my understanding, the only solution for me is to do a clean install by wiping the HD and re-partitioning it."
Right, except that your drive will automatically be erased when you set up the GUID partitiion.
"Now, my question is: can I use my current TM backup to later restore apps/prefs onto the new SL system? I believe that TM now has an Apple partition scheme that reflects the one I have on Leopard 10.5. Is that right? Will I encounter any problem because of the different partition type of TM?"
Your TM backup should work. But, there are not many guarantees in life. You could tranfer you TM backup temporarily to your internal and then make a bootable clone of your internal on your external. Afterwards, you could transfer the TM backup back. Then, you'd have two sources from which you could restore items.
Message was edited by: donv (The Ghost)

Can't format SSD to GUID Partition Scheme

I can't format my SSD to GUID Partition Scheme with Mac OS Extended(Journaled) but Master Boot works fine. When i try, it stucks even i tried Recovery HD. You can see issue in picture. What should i do?
MBP Mid 2012 OS X Yosemite 10.10.2
SSD is Samsung SSD 840 EVO

c_arslan wrote:
Toshiba is the current boot drive. I can't use the SSD because of the format of it. So there is SSD inside without format, filesystem etc.
In that case, since the SSD likely came with an MBR Partition Map, at the beginning of your format process, did you choose the Partition button, pull down the drop-down menu under Partition Layout, and choose 1 Partition, and then, using the Options button at the bottom, select GUID?

TimeMachine Fails with PowerPC / GUID Partition Scheme / 10.5.2

Just a short question to clear something up:
I have an external drive, partitioned using the GUID partition scheme attached to my MacPro. Before the update to 10.5.2, I was also able to back up my PowerBook over the network to this disk.
After the update, I get the following console message:
2008-02-14 18:49:06 /System/Library/CoreServices/backupd[450] Error: Volume at path /Volumes/Satinav does not appear to be the correct backup volume for this computer.
2008-02-14 18:49:06 /System/Library/CoreServices/backupd[450] Backup failed with error: 18
[This article|http://docs.info.apple.com/article.html?artnum=306932] explains that Time Machine disks should be partitioned with the Apple Partition Map when used with PowerPC-based Macs. If that's so – why did the backup work before the update? Any explanations? Any solutions without having to re-partitioning the entire drive?
Message was edited by: Kaspar Manz

Repairing the Hard Drive and Permissions
Open Disk Utility in your Utilities folder. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now shutdown the computer for a couple of minutes and then restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger, and 4.1 for Leopard) and/or TechTool Pro (4.6.1 for Leopard) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

Converting ext disks to GUID partition scheme without erasing

I've got a few external hard drives that I've been using for a few years, and I just tried to encrypt them...only to be told by OS X that they need to have the GUID partition scheme. Is there a way to give them this without erasing their contents? They're big drives and close to full. Most of them are backup drives, so I'd really prefer not to erase them, nor do I want to buy a new drive just to use as a copy machine.

Unfortunately, you do need to erase the drive to partition GUID
http://support.apple.com/kb/TS1600

HT2434 does anybody know what happens if I dont update the firmware of my macbook pro (does not have a guid partition scheme))

does anybody know what happens if I dont update the firmware of my macbook pro (does not have a guid partition scheme)?

Apple will hire a high school girls clique to follow you around, make fun of you & post disparaging comments on Facebook .

How do I partition my MacBook Pro so I can keep Snow Leopard and also install Mountain Lion?

How do I partition my MacBook Pro so I can keep Snow Leopard and also install Mountain Lion?
I want to install the latest OS, but I already know that I will lose a lot of my software unless I can partition the hard drive and have two "bootable" drives.
How do I retain everything I have, partition the drive, then reloa the software I own according to which OS it will work under?

msmedia wrote:
I do not currently own OS X ML.
I am currently running OS X (10.6.8 Snow Leopard) on my MacBook Pro. It has a 2.8GHz Intel Core 2 Duo Processor. I want to upgrade to Mountain Lion, but many of my software titles will not operate with ML and I cannot afford to replace some of them (Adobe Creative Suite, for e.g.)
After I back-up my HD and then partition the HD, how do I use the back-up to reinstall what I want to the SL partition, and then place the rest on the ML partition.
I have not done what you want to do, so can only offer some general thoughts in support. Take value from the following where you can. No guarantees.
If it was me, I would use a disk clone utility (e.g. Carbon Copy Cloner) to image the existing Snow Leopard disk to an external drive. Then verify that the external drive would boot and run Snow Leopard normally.
I would then purchase and download the Mountain Lion upgrade installer, but not run it. Use Lion Diskmaker to make a bootable USB stick, and perform a clean install of Mountain Lion, replacing the Snow Leopard on your MBP. This way, you make absolutely certain that no third-party drivers or other SL cruft remains to make Mountain Lion unstable. Update to latest ML point release. Fix permissions. Let TimeMachine make a full backup of your ML installation to a different external drive. Then turn of Time Machine.
In Disk Utility, use the + sign at the bottom of the ML partition to add another GUID, HFS+ Journaled partition for Snow Leopard. Resize to taste. Name it differently from your ML partition. Exhale.
Now ideally, you would like to reverse the external clone and put it back into the new SL partition. Then fix permissions. And demonstrate that you can boot into individually stable OS X installations. This would save you alot of work. Resist copying your home directory into ML just yet.
If you cannot successfully achieve the preceding paragraph, you will be faced with a full SL and application reinstall.
The ~/Library contents for SL and ML are sufficiently different that you do not want to mix them. You may want to salvage Safari bookmarks.plist. And, ML created folders in the home directory may have different permissions or ACL settings than in SL. So, my rule of thumb would be to copy folders that you created in SL, and only the contents of matching named OS created folders such as Music, Pictures, Downloads, etc.
For each operating system, you probably want the Time Machine settings to exclude the opposite OS X partition. If you use the same host name in Sharing prefs, then you will mix SL and ML backups on the same Time Machine back up drive. If you use different host names, they will be distinct folders in the Time Machine backups.backupdb and allow discrete restores per host. You may also want to gag Spotlight from indexing the opposite OS X partition.

The certificate on my applications install DVD has expired. I am unable to reinstall with this dvd on my snow leopard on macbook pro. Pl help.

The certificate on my applications install DVD for bundled software has expired. I am unable to reinstall with this dvd on my snow leopard on macbook pro. Pl help. If I use Lion, it works fine with the expired certificate. But doesnt work with snowleopard.

Create a DMG file of your DVD (instructions here: http://www.wikihow.com/Make-a-DMG-File-on-a-Mac).
Then follow the instructions here: http://managingosx.wordpress.com/2012/03/24/fixing-packages-with-expired-signatu res/

I have a MacBook Pro 15" and my warranty just ran out! I partitioned my harddrive into two partitions, one with Snow Leopard and the other with microsoft.This morning I turned on my Macbook Pro and it will not boot into Snow Leopard.

Good Morning,
I have a MacBook Pro 15" and my warranty just ran out! I partitioned my harddrive into two partitions, one with Snow Leopard and the other with microsoft.This morning I turned on my Macbook Pro and it will not boot into Snow Leopard. I shut it off took out the battery, reinstalled the battery. Then I put in the Snow Leopard CD and booted up to disk utility and The Snow Leopard partion would not show up?? I do see the microsoft partion.
I also rebooted holding down the shift key and still no Snow Leopard
Could you please tell me what I can do, what keys do I press on restart any advice to get Snow leopard back.
thank you.

Have you restarted holding down the Opt key? That procedure should give you a gray screen with all of the partitions that exist. Then select the SL partition for boot. Also go to System Preferences and Startup Disk, unlock the lock and select the SL partition as the default boot partition, then relock.

If I will install OS X Lion on the same partition that the Snow Leopard is I will loose all of my data?

If I will install OS X Lion on the same partition that the Snow Leopard is I will loose all of my data?

One can't guarantee no data loss. See my backup FAQ*:
http://www.macmaps.com/backup.html
All else being equal, it will upgrade you to 10.7, but applications and drivers may need to be updated too. See my other FAQ* for other possible pitfalls:
http://www.macmaps.com/upgradefaq.html#LION

Lost Boot Camp Partition in my Mac , I can´t install OS X Leopard in my iMac

Lost Boot Camp Partition in my Mac , I can´t install OS X Leopard in my iMac. Thank You

Impossible to answer with information provided

I have an iMac mid-2010 running Snow Leopard. Is it possible to install Mavericks and Windows 8 on separate partitions while keeping Snow Leopard?

I have an iMac mid-2010 running Snow Leopard 10.6.8. Is it possible to install Mavericks and Windows 8 on separate partitions while keeping Snow Leopard? If so, can you describe the steps?

That should not be a problem as long as there is enough room on each partition for each OS.
You would:
Use Disk Utility to partition your HD
Download the Mavericks installer and install it on one of the open partitions (when you run the installer from your 10.6.8 partition, it will ask you where you want to put Mavericks, and you will specify one of the open partitions).
Use Boot Camp to install Windows on another of the open partitions. Mac Basics: Using Windows on your Mac via Boot Camp

HT201364 Unable to update to OS X Maverick from Snow Leopard 10.6.8.

Unable to update to OS X Maverick from Snow Leopard 10.6.8. I have 648GB available on my MAC HD but when I go to install I get error that I need 2 GB free and 8 GB available. Does the AppStore install some where other than the MAC Hard Drive on my imac?

The reference is to RAM. You need at least 2 GBs of memory installed.
OS X Mavericks: System Requirements

Unable to change to GUID partition scheme so Snow Leopard can be installed

Similar Messages

Maybe you are looking for