Copying OS X install ISO to portable drive #
Disk Utility's Restore function fails with errors like:
but asr works like a charm:
- Restore Failure - Could not find any scan information. The source image needs to be imagescanned before it can be restored.
- Unable to scan "foobar." (Invalid argument)
- Unable to scan "foobar." (Resource busy)
$ sudo asr -noverify -source SnowLeopard.iso -target /Volumes/target
The same command can used to create bootable copies of the startup disk à la SuperDuper! and Carbon Copy Cloner (may need to follow with bless -folder /Volumes/target/System/Library/CoreServices, though the man page states "By default, asr will restore in place, and will not bless any folders. If --erase is specified, any blessed folders on the source will also be blessed on the target. bless -info /Volumes/<vol> will display current blessed folders for the given volume.").
In Lion and later, the -erase option seems to be required, i.e.,
$ sudo asr -noverify -source SnowLeopard.iso -target /Volumes/target -erase
/mac | Dec 07, 2012
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