[Casper] Erase new HD prior to imaging

[Daniel Farnworth]

We also have a preflight script that we use, ours checks for what  
platform the installation is occurring on along with the size of the  
primary disk and then partitions the disk with the correct partition  
scheme and volume sizes accordingly.

See attached, please feel free to reuse, change, improve etc, but if  
you do come up with any interesting changes or improvements to my  
shoddy code please let me know so we can update ours as well.

If you're interested, we also have a postflight that writes an fstab  
to hide certain volumes and remount a data partition to /Users

Enjoy...
Dan




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On 28 May 2008, at 17:36, Leacy, Miles wrote:

> Sure, here you go...
>
> diskutil partitionDisk disk0 3 HFS+ Macintosh\ HD 40G HFS+ Restore  
> 20G HFS+ Data 0b
>
> As you can see, I use 3 partitions.  Macintosh HD is the boot  
> drive.  40GB is more than enough for the system and apps in my  
> environment,  The 20GB Restore partition is a Casper restore  
> partition.  It doe an autologin as root and has Casper.app as a  
> startup item.  The Data partition is where /Users is redirected via  
> a symlink, and the 0b notation means “all remaining space on the  
> device”.
>
> On 5/28/08 12:27 PM, "John Wetter" <john_wetter at hopkins.k12.mn.us>  
> wrote:
>
>> Miles,
>>
>> Would you mind posting your preflight script?
>>
>> -John
>>
>>
>> On 5/28/08 11:09 AM, "Leacy, Miles"  
>> <Miles.Leacy at PoloRalphLauren.com> wrote:
>>
>>> On 5/28/08 12:00 PM, "Sandy J. Hinding"  
>>> <sjhinding at isd194.k12.mn.us> wrote:
>>> > Why am I the only one seeing this?
>>>
>>> You’re not.  I’ve encountered this same issue, and on  
>>> investigation, some machines were coming out of the factory with  
>>> odd drive formats.  That’s why I suggested the diskutil preflight  
>>> script.  It’s what I used to solve the problem.
>>>
>>> >The Erase HD option in CASPER does not seem to be sufficient,  
>>> but if we use DISK Utility they go. What is the difference?
>>>
>>> The difference between Casper and Disk Utility is that Casper  
>>> erases an existing partition (like the “Erase” tab in Disk  
>>> Utility).  With diskutil, you can repartition, creating the  
>>> correct partition setup (like the “Partition tab in Disk Utility).
>>>
>>> I hope this helps.
>
> -- 
> Miles Leacy
> Senior Mac Technologist
> ACTC|ACSA|ACT|CCA
> Polo Ralph Lauren
> 212-318-7603
> miles.leacy at poloralphlauren.com
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-- 
Daniel Farnworth
IT Manager
The Creative Partnership
daniel.farnworth at thecreativepartnership.co.uk

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