General discussion

I want to prevent second internal HD mounting on startup

I have two internal HDs. The second is used as one of my cloned bootable backups. Since it is not needed to be mounted all the time, to save wear, I would like to instruct my Mac not to mount it on startup. (I could always mount it using Disc Utility.)

How can I do that please?

G5/2.0 Hz, OS 10.5.8

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Reply to: I want to prevent second internal HD mounting on startup
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Not sure you can do that,

and don't see the "save wear" as a valid argument.

If you don't use it, mount it in an external enclosure and only connect it when needed


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Bearing wear

I was thinking that keeping the HD spinning all the time would wear the bearings more and shorten the life of the drive. I assume that from your reply that is not a practical problem.

(I use the second internal now and again to drop back into OS 10.3.9 to run DVD Studio Pro 3. The current version is bundled with Final Cut Pro and other software, at great expense.)

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I would remove that drive,

stick it in an enclosure and boot from it when I needed it.

Question. DVD Studio Pro 3 does not run under your current operating system?


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DVD Studio Pro

No. It launches, and it is possible to edit projects, but it won't save, so is unusable.

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I wonder if the not saving thing

is because there is a file missing and it "thinks" that you are using a demo of the product which will allow you to try it out but not save any of the created projects.

Check in the Applications data of the 3.9 drive, also the preference file for anything to do with that program and copy it to the same place on the other drive.


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I will try that.

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OS 10.3.9/Library/Application Support has several folders but the only one with anything in it is "Untitled Template" which cannot be read by a text editor.

in OS 10.5.8/..~/Library/Preferences/ whose text is radically different from the one in OS 10.3.9. for example, it begins :


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Drag the 10.5.8 plist

onto the desktop.
Then drag the 10.3.9 plist into the 10.3.9 library while holding down the Option key.

This will copy and not just move.

Boot from 10.5 disk and try the program.

If all goes wrong, just put the copy of the plist that you moved to the desktop, back in place again.

You are probably looking for a Preference file too. Users/yourname/Library/Preferences.
Do the same with that file too.


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I tried that...

... but the program quit almost immediately. However, I have been using it under OS 10.3.9 very successfully for over a year, (although it's rather inconvenient).


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There is one more thing you could try,

Using the original install disks and serial number, install it on the other partition.


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The drive which has DVD SP 3 installed is the drive holding OS 10.5.8 It is not partitioned. DVD SP 3 was installed on to it from the installation disc and using the serial number. DVD SP 3 has never worked properly under my OS 10.5.8 Perhaps I could try re-installing it.

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Worth a shot

to try to put it on the drive that it currently does not allow you to save.


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