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Re: Disk Utility -- Waiting for the disks to reappear

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On 2013-10-31 20:19:16 +0000, Robert Peirce said:

> In article <1lbjyvb.3kfkak1peex59N%dempson@actrix.gen.nz>,
>  dempson@actrix.gen.nz (David Empson) wrote:
> 
>> When you do start fresh, consider using disk images on the Drobo instead
>> of partitions, so you don't need to use an unsupported method, and don't
>> have to deal with the complications of resizing partitions again in
>> future.
> 
> I considered that but I use SuperDuper! and my understanding is it can't
> make disk images bootable.  Am I wrong about that?  Is there a backup
> program that can make bootable disk images.

I've been making my clones with SuperDuper! for quite awhile and they 
all have been bootable on the backup drive.

Here's what the SuperDuper! help says about images :
Storing a backup alongside other files on a destination drive
In general, we strongly recommend that you store a backup on its own 
volume or partition, on a FireWire or internal drive that supports 
booting the Macintosh. Doing so makes it really easy to recover, saving 
you time – a lot of time – should a disaster occur.
And not to toss a wet blanket on the optimist but, eventually, a 
disaster will occur.
But, sometimes, dedicating a volume to backing up is impractical, and 
partitioning is either inconvenient or impossible. In those cases, you 
should use a Read/Write “Sparse” Image.
With a Sparse Image, your files are kept in a “virtual” disk, which is 
actually stored in a single file. This file can be placed anywhere, 
including on a network volume. When mounted (which you do by simply 
opening the Sparse Image file), the “virtual” drive looks just like a 
local disk, and can be backed up to like any other. You can even Smart 
Update it!
There are some disadvantages, though:
>>> 	•	Since Sparse Images are not “real” drives, but rather simulated 
>>> drives stored in a file, they’re potentially less reliable than real 
>>> drives. (Note, though, that Apple uses sparse images for FileVault, so 
>>> this shouldn’t be a big concern.)
>>> 	•	Similarly, since Sparse Images are not real drives, they’re 
>>> inherently a bit slower.
>>> 	•	Finally, since they’re not physical drives, images of any type 
>>> cannot be used to start up your Macintosh. However, the contents retain 
>>> their bootable properties and – once restored to a real drive – can act 
>>> as a startup drive.
So the image itself isn't bootable, but could be used to make a 
bootable drive/partition.

Or at least that is what it says to me.

-- 
Lloyd

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Disk Utility -- Waiting for the disks to reappear Robert Peirce <bob@peirce-family.com> - 2013-10-28 10:56 -0400
  Re: Disk Utility -- Waiting for the disks to reappear Michael Vilain <vilain@NOspamcop.net> - 2013-10-28 16:04 -0700
    Re: Disk Utility -- Waiting for the disks to reappear Robert Peirce <bob@peirce-family.com> - 2013-10-29 18:45 -0400
      Re: Disk Utility -- Waiting for the disks to reappear dempson@actrix.gen.nz (David Empson) - 2013-10-30 12:11 +1300
        Re: Disk Utility -- Waiting for the disks to reappear Robert Peirce <bob@peirce-family.com> - 2013-10-31 16:19 -0400
          Re: Disk Utility -- Waiting for the disks to reappear Lloyd  E Parsons <lloydp21@live.com> - 2013-10-31 15:24 -0500
          Re: Disk Utility -- Waiting for the disks to reappear nospam <nospam@nospam.invalid> - 2013-10-31 16:39 -0400
          Re: Disk Utility -- Waiting for the disks to reappear Michael Vilain <vilain@NOspamcop.net> - 2013-11-01 09:43 -0700
      Re: Disk Utility -- Waiting for the disks to reappear Michael Vilain <vilain@NOspamcop.net> - 2013-10-29 18:33 -0700

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