Hdiutil and creation of more then one partition in a dmg and sparse image?

Question

Hello,
My main question,
after reading the man page and googling, I can't find any way to create a DMG file with more then one partition. Is this even possible?
My finaly goal is to attach those with -mountRandom and - nobrowse from inside a cocoa.app.
I need the return value to get the random path to those partitions.
hdiutil attach test.dmg -mountrandom /Users/dev/Desktop/testdmg
/dev/disk7 GUIDpartitionscheme
/dev/disk7s1 Apple_HFS /Users/dev/Desktop/testdmg/dmg.A43MrA
But I see that when I use a mutli partition dmg ( here simulated ) I will have to look for one or more random paths, something like this.
hdiutil attach test.dmg -mountrandom /Users/dev/Desktop/testdmg
/dev/disk7 Applepartitionscheme
/dev/disk7s1 Applepartitionmap
/dev/disk7s2 Apple_HFS /Users/dev/Desktop/testdmg/dmg.A43MrA
/dev/disk7s3 Apple_HFS /Users/dev/Desktop/testdmg/dmg.7IaUpK
What is the best way?
to grep a line wich contains '/dmg./ and then awk print $3 ?
path=/Users/dev/Desktop
hdiutil attach $path/test.dmg -mountrandom $path/testdmg | grep '/dmg.' | awk '{ print $3 }'
but what when I attach f.e a sparse image not using the -mountRandom, then I have no '/dmg.' just volumes?
Is that doable in one universal piece of code?

Answer 1

I can only answer your question re:multi partition on a .dmg with:
doug-penningtons-power-mac-g4:Desktop dougp$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: Applepartitionscheme *57.3 Gi disk0
1: Applepartitionmap 31.5 Ki disk0s1
2: Apple_Driver43 28.0 Ki disk0s2
3: Apple_Driver43 28.0 Ki disk0s3
4: AppleDriverATA 28.0 Ki disk0s4
5: AppleDriverATA 28.0 Ki disk0s5
6: Apple_FWDriver 256.0 Ki disk0s6
7: AppleDriverIOKit 256.0 Ki disk0s7
8: Apple_Patches 256.0 Ki disk0s8
9: Apple_HFS Joe 57.1 Gi disk0s10
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Applepartitionscheme *10.0 Mi disk1
1: Applepartitionmap 31.5 Ki disk1s1
2: Apple_HFS me 10.0 Mi disk1s2
doug-penningtons-power-mac-g4:Desktop dougp$ diskutil partitionDisk disk1 2 HFS+ leroy 5M HFS+ madge 5M
Started partitioning on disk disk1
Creating partition map
Formatting disk1s2 as Mac OS Extended with name leroy
Formatting disk1s3 as Mac OS Extended with name madge
[ + 0%..10%..20%..30%..40%..50%..60%..70%..80%..90%..100% ]
Finished partitioning on disk disk1
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Applepartitionscheme *10.0 Mi disk1
1: Applepartitionmap 31.5 Ki disk1s1
2: Apple_HFS leroy 5.0 Mi disk1s2
3: Apple_HFS madge 5.0 Mi disk1s3
Message was edited by: doug pennington