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Re: Unique Identifier for Disk

On Apr 29, 2004, at 4:29 AM, Jeffrey Berman wrote:

Because the particular volume I am trying to track is on the device also
containing the startup volume, it sounds like the relevant disk device file
will always start with "disk0". If the minor number representing a specific
partition remains constant across restarts, the device file name for that
volume (e.g., "disk0s10") could serve as an identifier across restarts.

Then I could depend on getting the current name of the disk object for use
in AppleScript with:

do shell script "df -t hfs | awk -F/ '/disk0s10/ {print $5}'"

As long as the focus is on disk objects on the same physical disk as the
startup disk, does anyone see a flaw in using this approach as a way to
identify a disk in AppleScript even if the name of the disk changes?

Assuming that you plan to capture the output and use it as a disk name in the Finder or System Events, I will only caution you that the above shell script does not translate ":" characters in the BSD name space to "/" characters in the HFS name space. (Just in case your volume gets renamed to "AC/DC", etc.)

set volumeName to do shell script "df -t hfs | awk -F/ '/disk0s10/ {print $5}' | tr ':' '/'"
tell application "Finder" to open disk volumeName

Michael
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References: 
 >Re: Unique Identifier for Disk (From: Jeffrey Berman <email@hidden>)



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