hdiutil instead of Disk Utility to create Base Image, cache

Could someone please point me in the right direction to create the Base Image from Terminal? I tried a bunch of different flags and haven't ended up with a working .dmg yet. I had thought I'd be able to figure it out with the imageinfo flag, but I can't even remember how I did it right in Disk Utility. Here's the successful image I made via diskutility when analyzed with hdiutil imageinfo: [code] Format Description: UDIF read-only Class Name: CUDIFDiskImage Checksum Type: CRC32 Size Information: Compressed Ratio: 1 Total Empty Bytes: 1928338944 Sector Count: 16777216 Total Bytes: 8589934592 CUDIFEncoding-bytes-wasted: 0 Total Non-Empty Bytes: 6661595648 CUDIFEncoding-bytes-in-use: 6661595648 Compressed Bytes: 6661595648 CUDIFEncoding-bytes-total: 6661595648 Checksum Value: $6ED5AF39 Segments: 0: /Volumes/Leftova/instadmg-read-only/InstallerFiles/BaseOS/Mac OS X Install DVD.dmg Partition Information: 0: Name: whole disk (Apple_HFS : 0) Partition Number: 0 Checksum Type: CRC32 Checksum Value: $717A7727 Format: UDRO Backing Store Information: URL: file://localhost/Volumes/Leftova/instadmg-read-only/InstallerFiles/BaseOS/Mac%20OS%20X%20Install%20DVD.dmg Name: Mac OS X Install DVD.dmg Class Name: CUDIFEncoding Backing Store Information: URL: file://localhost/Volumes/Leftova/instadmg-read-only/InstallerFiles/BaseOS/Mac%20OS%20X%20Install%20DVD.dmg Name: Mac OS X Install DVD.dmg Class Name: CBSDBackingStore partitions: partition-scheme: none block-size: 512 appendable: true partitions: 0: partition-name: whole disk partition-start: 0 partition-synthesized: true partition-length: 16777216 partition-hint: Apple_HFS partition-filesystems: HFS+: burnable: true udif-ordered-chunks: true Properties: Encrypted: false Kernel Compatible: true Checksummed: true Software License Agreement: false Partitioned: false Compressed: false Resize limits (per hdiutil resize -limits): min cur max 13195984 16777216 16777216 [/code] I'd love to create the cache file in advance as well, if I'm following the script correctly that conversion happens via this command: [code] /usr/bin/hdiutil convert -ov -puppetstrings -format UDZO -imagekey zlib-level=6 -o "${ASR_FOLDER}/$ASR_OUPUT_FILE_NAME" "$SHADOW_FILE_LOCATION" | (while read INPUT; do log "$INPUT " detail; done) [/code] I'm not sure exactly where I substitute in my baseimage.dmg and point the output. Any help would be greatly appreciated, please let me know if I'm not asking the right questions or if better documentation than the man page for hdiutil is available. Thanks, (edited to correct typo) Allister Banks POINT www.pointconsultants.com 646.502.4708 368 Broadway Ste. 303 New York, New York 10013