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Change Startup Disk is an AppleScript that allows the user to bypass the OS X System Preferences to change the Startup Disk. Features include:
  • Choose between OS 9 and OS X with the click of button.
  • OS 9 Script included (with restart option).
  • Instructions included inside Simple Script on embedding your password so as to permanently bypass the dialog box.
  • Deluxe version works on multiple partitions/hard drives. Requires 24U Appearance OSAX. See Related Link, below.

What's New

Version 1.6.1:
  • Added German versions of all scripts, courtesty of Alfonso "Hcktik" Tavernier (alfonso@aja.de)? CSD-Original script should better handle hard drives that have been renamed.? Error-check routines for both scripts to handle a multiple of issues.
  • Dialog box at end of both scripts will give up after 6 seconds and restart the computer into OS9.
  • Hopefully the Deluxe version feels more streamlined.


Mac OS 9.0 or later, or Mac OS X 10.1.2 or later

*Previously available here

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Change Startup Disk User Discussion

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Benglfer Member IconComment+1

It brought down my system also. I could not boot up with OS9 or OSX and had to take my eMac and pay $95 to get it booted up; then they could not startup with OS9 because it was corrupted.. (Version: 1.6.1)

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Version 1.6.1
Heavy_shower Member IconComment+7

The damn thing brought down my system because "charpalette" refused to let it restart. So I couldn't force quit neither the Finder or Suitcase. I did a force-restart, held option down, and had a choice to boot into 9 or into my X on the external drive. After choosing 9, my mouse went on steroids. So instead of booting back into X, I decided to boot with the DVD and run Disk Utility. Everything seemed fine until I rebooted... then I crashed at the grey screen! Needless to say, I cursed the author and trashed CSD!

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Version 1.6.1
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Anonymous Member IconReview

Excellent program. Fast, stable, reliable, and great support from the author. Works as stated and then some!

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Version 1.6.1
Cliff Member Icon+0

Will not open - comes up with error message - "the mount image operation did not complete. (-50)". Downloaded twice - same result twice.

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Version 1.6
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> 5 1


Current Version (1.x)


Downloads 6,294
Version Downloads 2,540
License Free
Date 26 Mar 2003
Platform OS Classic / OS X / PPC 32
Price Free