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Mac Forum / General / Hardware / July 2006MacBook Pro -- Creating Bootable Partition on External Drive
I have a MacBook Pro which is normally connected to two external firewire 800 drives, one with two partitions and one with four partitions. Five of these partitions are the recipients of SuperDuper! bootable clones. These five partitions can each be booted from. The remaining partition is currently empty, having been HFS+ formatted as Mac OS Extended (Journaled). I would like to create a "virgin" installation of OS X on that currently empty partition. The mystery is that any attempt to install OS X on that partition using the install disk set that came with my computer is rejected with a "this disk is not bootable" (my paraphrasing here) message. I questioned the "geniuses" at the Apple store and they said that I should have no trouble creating such a virgin boot partition and they could offer no suggestions as to why my attempts to do such have been thwarted. So........ I'm open to suggestions and such, and here are the "thanks" in advance!  SignatureJames Leo Ryan ..... Austin, Texas ..... taliesinsoft@mac.com > I have a MacBook Pro which is normally connected to two external firewire 800 > drives, one with two partitions and one with four partitions. Five of these [quoted text clipped - 14 lines] > > I'm open to suggestions and such, and here are the "thanks" in advance! Beyond me at this point (still awaiting my MacBook which should arrive by Tues). But have you checked the Apple discussion forums? Lots of good info and help from users there. Phil > I have a MacBook Pro which is normally connected to two external firewire 800 > drives, one with two partitions and one with four partitions. Five of these [quoted text clipped - 10 lines] > have no trouble creating such a virgin boot partition and they could offer no > suggestions as to why my attempts to do such have been thwarted. This is a little convoluted but it will work. First, create a clone of your current system on a SuperDuper! partition. Do a clean re-install of OS X on your computer. Use SuperDuper! to clone it to your "virgin" drive. Restore the original system from your backup. SignatureRobert B. Peirce, Venetia, PA 724-941-6883 bob AT peirce-family.com [Mac] rbp AT cooksonpeirce.com [Office] > > I would like to create a "virgin" installation of OS X on that currently > > empty partition. The mystery is that any attempt to install OS X on that [quoted text clipped - 10 lines] > of OS X on your computer. Use SuperDuper! to clone it to your "virgin" > drive. Restore the original system from your backup. Actually that might not work. The partition table needs to be in a particular format for Intel Macs to see it as a bootable drive. PowerPC Macs (G3, G4, G5) need an Apple partition map, Intel Macs need the GUID partition scheme. Unless the disk is partitioned correctly for its processor type, the Mac cannot boot from it, no matter what system software is on it. It's also impossible to change the partition scheme unless you completely erase the entire drive. If the drive IS partitioned using the GUID scheme, I've got no suggestions, sorry. If not, the OP should tell the "geniuses" at the Apple store they might want to consider reading a few manuals and updates. Cheers, Matthew. In article <m.kirkcaldie-B2DCC9.21411117072006@un-2park-reader-01.sydney.pipenetwor ks.com>, > > This is a little convoluted but it will work. First, create a clone of > > your current system on a SuperDuper! partition. Do a clean re-install [quoted text clipped - 8 lines] > software is on it. It's also impossible to change the partition scheme > unless you completely erase the entire drive. The writer said he had made bootable backups with SuperDuper! so this would work in this case. It might not in other cases, but I wasn't addressing that. Frankly, I wasn't even aware of it. The key for me was the claim that he could use SuperDuper! to make bootable backups. OTOH, I will have to keep this in mind if/when I get a dual-core machine. It will explain why my backups fail! SignatureRobert B. Peirce, Venetia, PA 724-941-6883 bob AT peirce-family.com [Mac] rbp AT cooksonpeirce.com [Office] > This is a little convoluted but it will work. First, create a clone of your > current system on a SuperDuper! partition. Do a clean re-install of OS X on > your computer. Use SuperDuper! to clone it to your "virgin" drive. Restore > the original system from your backup. And yes, it did work! Many thanks. SignatureJames Leo Ryan ..... Austin, Texas ..... taliesinsoft@mac.com > > This is a little convoluted but it will work. First, create a clone of > > your [quoted text clipped - 6 lines] > > And yes, it did work! Many thanks. Glad you got it to work. As to the real cause, there have been a few discussions at various places around the web on similar Firewire problems. The solution for some was to obtain a firmware update from the drive enclosure's manufacturer, so you might want to check into this. The latest firmware _might_ prevent other problems as well. --Fred |
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