Did you try using Disk Utility from either the recovery partition (in Lion or Mountain Lion) or by booting from install DVD for previous versions?
Make sure the external drive is connected and powered before launching Disk Utility.
In case you are unfamiliar with procedure:
Restart machine and press 'Option' key immediately after hearing 'Gong' sound (usually heard at same time grey screen shows). Select the Recovery drive or the DVD and use Disk Utility from there.
Lion and Mountain Lion - Disk Utility shows in the displayed option window once booted.
Snow Leopard and earlier - use the Utilities menu to access Disk Utility
Hope that helps.
Corky, I did as you said and restarted with the option key held down after the gong, but I never got past the grey screen. I sat there for about 5 minutes with a grey screen and nothing happened.
Uwe, I was finally able to access the library on the external drive (after it ran the repair sequence). I thought maybe I could update a vault from there, but I have had just a spinning beach ball for about 20 minutes just trying to access the vault portion of the screen. So, it looks like I have Aperture open, but I'm not able to do anything with it.
I would of course try this. Do you have all pictures organized by Aperture or referenced to from some Ext HDs?
If referenced, I would think of trying to organize the Library new.
The workaround suggestion: Copy the Aperture Library to one of your Macs
and run it from there (as you already asked). If it works fine, take another Ext.HD (maybe you are asked
by Aperture to repair because of any Inconsistencies, this takes most of the times quite long, but maybe helps),
and take care as before.
I wouldn't recommend Seagate HD's, but as always that's easy to tell afterwards.
It seems like the EXT HD has a problem and hopefully not Aperture.
This all is the reason for me, why I changed all pictures into referenced pictures, do my work, give names with Aperture, but keep the order in my hand. Back Up is of course as well in my responsability.
I've had always a bad feeling about letting something do the most important work, without knowing and take
Sorry it took so long to post back.
If you still want to try to repair disk permissions and verify external disk, you can try to shut down the computer completely > disconnect the external HD > try booting to either the recovery partition or install DVD mentioned earlier.
If you successfully get to the boot options screen, connect the external HD and then load Disk Utility.
Hopefully, Disk Utility will be able to see and mount the external HD allowing you to repair permissions and repair / verify disk.
Message was edited by: CorkyO2 to remove 'wait' from third sentence.
Neither of my internal HD's were large enough, so I went out and bought an external drive and copied the Aperture Library to that, crossing my fingers. I took several hours, but copied successfully. I then opened new copied library with Command, Option Shift held down, and rebuilt. It took all night to generate previews, but all was good this morning. Success! I backed up a vault before I did anything, and then plugged the HD into my desktop which is backed up with Backblaze. Thank you all for your suggestions. The Seagate drive is going in the trash.
well the most important issue were your originals, right.
The previews could have been done anytime.
I don't know Backblaze as a Bachup software, but more important is, that you have a Backup on a really
Ext HD, which is not all the time connected to your system.
Because even RAID Levels (...) are not at all a Backup as you might know.
For safety reason I would recommend to delete the Seagate and overwrite it at least one time with Zeros.
(In German this is done with "Festplattendienstprogramm", I'm not sure about the right AE expression)
In case the Seagate doesn't mount at all, skip this of course. And of course I do not know how critical
you are with your pictures and if anybody could do something with it.
So take care and nice that I could have helped.