Hi Ronni Very good, thank you. I got three imperitives from your reply, plus the implied “Snow Leopard not needed”. Imperitive 1: Check and back up. Imperitive 2: Check and back up. Imperitive 3: Check and back up.
I also appreciate the short list of “how to do it” instructions, which will reduce my stress, and it added new information for me (Orange Drive). I will try and defer the job until after Christmas when I can focus on the task. I have the raw installer on the 2012 iMac in an archive folder, plus the bootable version on a USB stick. Cheers Alan On 5 Dec 2014, at 2:26 pm, Ronni Brown <[email protected]> wrote: > Hi Alan, > > Do you have the Mavericks Installer on your 2012 iMac? If so you are best to > follow these instructions below: > > Perform A Clean Install of Mavericks (OS X 10.9) > > Installing Mavericks via Target Disk Mode > > If you have a second Mac in your house the process is easy; simply attach the > Mac you want to install the clean copy of Mavericks on to your other Mac > using Target Disk Mode and erase the drive. > > Otherwise you are going to have to Install Mavericks on an external disk > first before you can continue. Long and the short of this is you need to be > running a Mac Operating System from another Drive other than the one you want > to do a clean install on for this process to work. > > For the purposes of these directions the process will be done using another > machine. > > Formatting the Target Volume > > Connect your machine to another Mac with a FireWire or lightning cable. > Boot the target machine while holding down the T key on the keyboard. This > will cause the machine to boot up in target disk mode. You will know you have > done this properly when a FireWire Icon or Lightning Icon appear on the > screen. If the Apple Logo appears you did it wrong and will need to start > over. > Once you are in target disk mode you should see the drive appear in the > finder of the machine it is connected to. > Launch Disk Utility from your /Applications/Utilities directory and select > the drive of the machine in target disk mode. > Now is a good time to stop and think about if you backed up everything you > needed from the drive you are about to erase because there is no going back. > Select Erase, set the format to Mac OS Extended (Journaled) and enter the > name of the Volume. > The standard name for the primary volume is Macintosh HD but you can name it > what ever you want. > Now is a good time to stop and think about if you backed up everything you > needed from the drive you are about to erase cause there is no going back. > Once you are sure you have backed up everything you need, click erase. > You will be presented with a prompt saying are you sure you want to do this > all the data on the drive will be erased. Did you back everything up? If you > are sure you are ready to continue click erase. > You drive will now be erased, the process should only take a few seconds. > Once the erase process is complete quite disk utility. > Installing Mavericks > > Launch the Mac OS Mavericks Installer application from the USB Key or > External Drive. > Click through the prompts until you are presented with the drive selection > screen, select show all disks and select the newly erased volume from the > previous steps. You will know you are selecting the correct volume because > the disk colour will be orange. > Click Install and now wait. The first phase of the installation should take 3 > – 10 minutes to complete at which point your machine will reboot. > During this wait period you will suddenly find yourself wondering if you > actually did backup everything you needed from the drive you just erased > Once your machine has restarted, the second phase of the installation will > occur and this will take around 30 minutes to complete. You wont have to do > anything during the process. > After all the waiting, simply shutdown both the machines and disconnect the > Lightning or Firewire Cable and reboot. It is possible that the machine you > did the installation will be confused for a minute since it is expecting to > be booting from the connected machine, it will take a minute but the > installation machine should find the operating system on its own drive and > boot from that. If it doesn’t reboot holding down the option key and select > the primary drive of the machine to boot off of. > Cheers, > Ronni > > 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" > 2.3GHz / 8GB / 750GB @ 7200rpm HD > > OS X Yosemite 10.10.1 > Windows 7 Ultimate (under sufferance) > >> On 5 Dec 2014, at 12:33 pm, Alan Smith <[email protected]> wrote: >> >> Hello again >> >> First I’ll put the question, then give some background details. >> >> For a clean install of OS X Mavericks to an erased HD, do I need to install >> OS X Snow Leopard 10.6.8 as an intermediate step? > > >> >> The backgound. My late 2009 iMac suffered a breakdown a few weeks ago. >> With wamug help (particularly from Ronni) the iMac is now functioning well. >> As the “cause” of the breakdown was not identified, the iMac is on a “use >> with care but don’t rely on it” status. >> >> I want to do a comple erasure of the hard drive (and zero all data) and >> re-install Mavericks. >> >> My plan was to use the original Snow Leopard 6.1 install DVDs and upgrade >> the iMac to 10.6.8. Then install Mavericks via a bootable installer of the >> app. Next update Mavericks with the OS X 10.9.5 combo update, and finally >> install the OS X Supplementary update. I realise other apps and data would >> have to be re-installed, and preferences all set up again. >> >> I have the Mavericks bootable installer and appropriate update .dmg files >> for Snow Leopard and Mavericks. >> >> My belief was that Mavericks will only install over Snow Leopard 10.6.8. >> However on perusing the Macworld articles on installing Mavericks, I found >> an interesting postscript, copied here in full: "Note that the installer >> lets you choose any drive that has OS X 10.6.8 or later installed or any >> blank drive. (The latter is what you would choose if you wanted to do a >> “clean” install that contains none of your data, applications, or settings >> from your current installation of OS X.)” === Note the “… or any blank >> drive”! >> >> Hence the question, "Do I need to install OS X Snow Leopard as an >> intermediate step?" Or was that applicable only when the user wanted to >> download Mavericks from the App Store? >> >> Regards, >> Alan >> >> Alan Smith >> Late 2012 iMac 27" Intel Quad Core i5 Fusion 3.2GHz 8G RAM - OSX 10.9.5 >> Mavericks >> Late 2009 iMac 21.5" Intel Core 2 Duo 3.06GHz 12G RAM - OSX 10.9.5 Mavericks >> iPhone5; iPad2; ATV2 >> > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
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