sykesy69 Posted August 10, 2008 Share Posted August 10, 2008 So I've had a successfull Dual Boot of Leopard and WinXP for a while now all on 1 disk, but I now need to rebuild my XP partition. I setup my Mac partition to run using EFI, which I think means that this needs to be the active partition and runs off a GUID partition table. If my memory serves me correctly, if I set my XP drive to active it was giving me black screens... I'm pretty much a newbie, when it comes to Mac and using console commands and stuff... So is there and easy way to switch back to MBR booting, so that I can set XP as active and then use Darwin boot loader and the Chain0 method??? Or is there a way for me to rebuild XP without changing the partition table??? I found this method to convert back, but don't want to rush into it without knowing the implications (really don't want to lose any info by having to reinstall Leopard): Using a Command Line 1. At a command prompt, type: dispart, and then press ENTER. 2. At a command prompt, type: list disk, and then press ENTER. 3. Record the disk number of the disk that you want to convert to an MBR disk. 4. At the diskpart prompt, type: select disk n, and the press ENTER. 5. At the diskpart propmt, type convert mbr, and then press ENTER. I already have the Chain0 in place, but I fear there is still stuff to do in the Mac partition to make it work... Any help would be much appreciated... Link to comment https://www.insanelymac.com/forum/topic/120267-guid-dual-boot-leopardxp-rebuild/ Share on other sites More sharing options...
Riley Freeman Posted August 10, 2008 Share Posted August 10, 2008 If I'm not mistaken those convert instructions will erase the partition. AFAIK the only way to go from GUID to MBR is to image the partition(s), create a new mbr partition map and restore the partition(s). Link to comment https://www.insanelymac.com/forum/topic/120267-guid-dual-boot-leopardxp-rebuild/#findComment-851622 Share on other sites More sharing options...
sykesy69 Posted August 10, 2008 Author Share Posted August 10, 2008 If I'm not mistaken those convert instructions will erase the partition. AFAIK the only way to go from GUID to MBR is to image the partition(s), create a new mbr partition map and restore the partition(s). Thanks Riley Freeman... Still not entirely sure what you talking about (I'm a bit of a n00b), but I was in the process of creating a Time Machine of my Mac Partition and I wanted to format my XP Partition anyway... If you could just let me know how to create a new mbr partition map would be much appreciated... Link to comment https://www.insanelymac.com/forum/topic/120267-guid-dual-boot-leopardxp-rebuild/#findComment-851795 Share on other sites More sharing options...
Riley Freeman Posted August 10, 2008 Share Posted August 10, 2008 Still a n00b here too . Only been at this a few days. To repartition, boot your Leopard Install Disc and choose your language. When you get to the first Installer page, go to the menubar at the top and choose Disk Utility from the Tools/Utilities menu. Select the hard disk you want to repartition and go to the Partition tab. Set up the number of partitions and sizes and then click the Options button down the bottom. This will let you pick the partition type. Here you can choose MBR. Once you have the leopard partition formatted you can probably restore your TM backup to it. I haven't tried that yet so can't guarantee anything. If you want to do a clean leo install to an MBR partitioned drive with boot-123/retail leo, you will need to use a patched OSInstall.mpkg file as retail discs will only install to GUID-partitioned drives. Rather than burning a new disc, I created a 8gb partition on an external usb drive and restored the leo install dvd to this. Then just replaced the file. When I booted from the boot-123 disc I chose the usb drive and was able to boot the modified leo install disc from there. As a plus it also makes installation very fast compared to dvd Link to comment https://www.insanelymac.com/forum/topic/120267-guid-dual-boot-leopardxp-rebuild/#findComment-851828 Share on other sites More sharing options...
Recommended Posts