Switched Disk from Basic to Dynamic, Now There Is No Bootable OSX Option
Macbook Pro 15'', Mac OS X (10.5.2), Dual Booted with XP SP2
You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
Macbook Pro 15'', Mac OS X (10.5.2), Dual Booted with XP SP2
bourne4 wrote:
After the release of the last Macbook Pro Firmware Update, I realized I do not have a GUID partition scheme. Rather than reinstalling Leopard and starting from scratch, I decided to use the Windows Disk Manager to change the disk from Basic to Dynamic. After doing so, I allowed it to reboot and held down the option key, only Windows shows up as a valid bootable option. All the partitions are there, my OSX partition is just fine, it is just not showing up.
By changing it from Basic to Dynamic, it must have disregarded the MBR, or removed it completely. Honestly I am not to sure how a dynamic disk handles boot options. Does anyone have any ideas as to make OSX a bootable option again? Do I need to find a different bootloader? Right now I can only boot into XP, but my OSX partition is very much there (as of Disk Management). Any thoughts? (Reinstallation is not a very plausible option at this point)
{quote:title=nerowolfe wrote:}I thought all Intel boxes shipped with the GUID format.
{quote:title=nerowolfe wrote:}
Reinstallation may not be plausible, but it may be necessary.
If you have a TM backup, it's a snap, assuming you did nothing to the partition scheme.
Can you undo what changes you made?
Again, without a backup, anything you do may cause data loss.{quote}
bourne4 wrote:
{quote:title=nerowolfe wrote:}I thought all Intel boxes shipped with the GUID format.
{quote}
I have formatted and reinstalled several times, but have never paid notice to the GUID partition option...
{quote:title=nerowolfe wrote:}
Reinstallation may not be plausible, but it may be necessary.
If you have a TM backup, it's a snap, assuming you did nothing to the partition scheme.
Can you undo what changes you made?
Again, without a backup, anything you do may cause data loss.{quote}
I do not have a time machine backup, it would be great if you can do a time machine backup over a network. But I do have a backup I made about a month ago, but there are still a lot of files that have been modified since then. I cannot undo the changes, once you convert to a dynamic disk, you cannot convert back. My OSX partition is still there, so I my data should be alright. I can just use a Live Linux CD and get all my data off if it has to come to that. My hope is that since the OSX bootloader is still present, that I might just be able to make a few changes and active my OSX partition. It might have just been mapped weird at the conversion. Thanks for the reply!
Switched Disk from Basic to Dynamic, Now There Is No Bootable OSX Option