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Booting from a USB CD on a Macbook Air

Hi experts.

I am totally new to supporting Macs.  My customer needs me to wipe the hdd in her Macbook Air.  I'm using my external USB DVD-Rom drive and a copy of Lion.  How can I get it to boot off the USB device and wipe the drive?

Thanks much.
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Ray Drummond
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Ray Drummond
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3 Solutions
 
Marc SmetsSystem AdministratorCommented:
RayD71,

Connect your usb drive and restart the MacBook Air while pressing & holding the Option key

More info : http://support.apple.com/kb/ht1948
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Ray DrummondLan Administrator IIIAuthor Commented:
I've done that and the only option to boot from I get is the mac hdd.  I do hear the optical drive spinning up though.
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strungCommented:
Where did you get the copy of Lion? It is generally not available on DVD? Did it come with the Mac?

Generally speaking:

1. Macs will not boot from OEM disks from a different model or vintage of Mac.

2. Macs will not boot from disks containing a system older than the one they shipped with.

Also, are you sure the Lion DVD you have is in fact a bootable DVD?
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Marc SmetsSystem AdministratorCommented:
If you get into MAC OS X, you can go to System Preferences and then select Startup Disk.

Does your optical drive shows up?
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didbCommented:
Make sure it is HFS+ formatted.
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didbCommented:
Sry. Forget about that. How old is that drive?
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Ray DrummondLan Administrator IIIAuthor Commented:
@Shamzi - Yes, the drive shows up.  I'm beginning to think it's the image they gave me.

@didb - It is.  The DVD drive is about 8 months old.
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Ray DrummondLan Administrator IIIAuthor Commented:
Ok the image was bad.  I had another created and I'm in.  But after it booted from the USB drive, it's just sitting here with the "no" symbol on the screen.
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