EFI on Kalyway 10.5.2 question / Going GUID after MBR install.

[enyceexdanny]

Hey guys. Yet again I have a few questions and I would appreciate some advice.

 

 

Ok, regarding this whole EFI V8 thing. Does the kalyway dvd automatically install it? OR would I have to install it seperately.

I don't think I saw any options during the installation.

 

Secondly, is there any practical way of changing the disk to GUID after mbr installation?

I already have all these apps installed, and would really suck if I had to do it all over again.

Would it even be worth it? I'm not too interested in the flexibility of the partitioning and such, I'm more sold on the performance increase - although I can't really find the exact amount anywhere.

 

Thanks again.

[00diabolic]

GUID offers no performance increase as for speed in the OS. However the one difference I have ever seen is bootup. But its so minor I doubt you would even notice. Its like maybe 1 or 2 seconds faster on GUID MAYBE.

 

Yes kalyway 10.5.2 install EFI automatically on either MBR or GUID. You can not change from MBR to GUID easyly. Takes an entire reformat/reinstall. You could use Time machien to do it if you wanted. But for 1-2 seconds who cares. Plus if you want to run windows on GUID its tricky and not many systems can do it. I tried to make it work and it failed on mine. So I went back to mbr and everything is fine with EFI 8.0 on MBR.

 

If you want a script that can install EFI on either GUID or MBR google inssanelymac and bootefi.sh. You should be able to find it. Its a nice script and was more useful before all the disks included EFI on them. Now with this new round of disks from leo4allv2 & v3, kalyway 10.5.2, and jas 10.5.2 they all include it so the script is less useful.

[enyceexdanny]

Thanks for the quick response.

 

So, there's no need to install efi v8 seperately - right?

And I have osx on 1 drive, and windows on a totally seperate drive.

 

Honestly, if it's just the 1 or 2 seconds of faster boot time as you said - I guess it's not even worth the hassle.

But just out of curiosity, if I am planning on restoring with timemachine - I would have to do a fresh install of osx then restore?

I have made a image via Carbon copy cloner, so can't I just reformat as GUID - then restore from the image?

Would I have to do anything else other than that? Such as making the drive active or whatnot?

 

Thanks

[00diabolic]

I'm not sure about carbon copy cloner. I have it but never used it. Disk utility & tm have always worked great.

 

If your going to do it first tm your partition. Then reformat with guid. Then boot with whatever bootable dvd you have and go to utilites -> restore system from tm backup. Then once restored, boot back into either another leopard/tiger install or the dvd again and run bootefi.sh script to mark the partition active and install efi for guid or mbr whatever you chose. Then reboot and ur done.

 

TM does not mark your partition active & your old efi would have to be re-setup to boot from again. Thus you need that script to do it.

 

prob better off just keeping mbr.

[enyceexdanny]

prob better off just keeping mbr.

 

haha, yeah - I think you're right.

I guess if there was some negligible performance increase, I wouldn't mind going though that. But eh..

 

Thanks. =)

[Vista Master]

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