why won't applescript record?

See AppleScript Editor->Help->AppleScript Editor Help->search for record and look at recording scripts; wherein, you'll find that Disk Utility isn't scriptable.

27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10.1), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

/dev/diskNsX is a 'device node' as such it depends on the order that disks get connected.

N is the disk number, X is the session number (partition). It's not a good idea to rely on these, sometimes a disk can be slow & they get mounted in a different order - other identifiers are more stable…

diskutil mountdisk NAME-OF-DISK

or

diskutil mount [UUID]

[UUID] is a unique identifier that can be found in Disk Utility app, select the volume & use the info button to view the volume details…

…

Universal Unique Identifier: 12358BA8-0BA0-355E-810D-97BCDB1F3AD3

The diskutil command will also show it via the info keyword

diskutil info NAME-OF-DISK

…

Volume UUID: 12358BA8-0BA0-355E-810D-97BCDB1F3AD3

Pick the name or the UUID, the UUID should remain constant until you reformat, so consider that the best option.

As ever the manual helps… (see the DEVICES section near the bottom for identifier info).

https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/ man8/diskutil.8.html

Or…

man diskutil in Terminal

P.S. Read the 10.6 manual - it's possible some identifiers are new features.

Here is one approach. Presents you with a selectable list of the partition names that it detects. It then tests to see if the partition is already mounted, and if not it mounts it and then informs you. Otherwise, it will tell you that it is already mounted.

-- build a list of Apple_HFS and FAT 32 mountable disks that are available

set mountList to {}

-- we can mount Apple_HFS, or FAT 32 filesystems

set mygrepTypes to "| egrep 'Apple_HFS|DOS_FAT_32' "

-- diskutil info places the partition name in these columns

set mycut to "| cut -c 34-52 "

-- trim all trailing spaces after partition names

set mysed to "| sed 's/[ ]*$//'"

-- return each mountable partition name into the list

set mountList to paragraphs of (do shell script "diskutil list " & mygrepTypes & mycut & mysed & "&")

set myPartition to (choose from listmountListwith title ¬

"Mountable Partitions List" with prompt "Please select partition to mount")

-- if the cancel button is clicked

if myPartition is false then quit

-- is the partition mounted or not

-- returns Yes or No strings

set status to (do shell script "diskutil info " & quoted form of (myPartition as text) & " | awk '/Mounted:/ {print $2}' &")

if status is "Yes" then

display dialog "Sorry, the partition " & quoted form of (myPartition as text) & " is already mounted"

else

display dialog (do shell script "diskutil mount " & quoted form of (myPartition as text))

end if

AFAIK, you never recorded it, since DU isn't scriptable, that's why you need to use the do shell script command, but most likely got the command from somewhere else. Glad you got it working.