To umount a Macintosh volume at start-up (for example the windows bootcamp volume) you can create a startup item …<\/p>\n
In:<\/p>\n
\/Library\/StartupItems<\/p>\n
Create a directory “Unmount”\u00a0 in that directory you want to put 2 files:<\/p>\n
Unmount<\/p>\n
and<\/p>\n
StartupParameters.plist<\/p>\n
<\/p>\n
Unmount<\/strong> file is a shell script with the following contents:<\/p>\n #!\/bin\/sh The \/dev\/diskXXX<\/strong> in this file you need to change.\u00a0 My unmount command is actually …<\/p>\n \/usr\/sbin\/diskutil unmount \/dev\/disk0s3<\/p><\/blockquote>\n To find the correct information for your system run the command:<\/p>\n “diskutil\u00a0 info \/Volumes\/Windows\/” \u00a0\u00a0\u00a0 —- or whatever the volume name is …<\/p>\n in the output you need to look for the “Device Node” .\u00a0 Whatever it says for that Device Node is what you should put in the Unmount command in the shell script above.<\/p>\n <\/p>\n StartupParameters.plist<\/strong> is a plist file that contains:<\/p>\n <?xml version=”1.0″ encoding=”UTF-8″?> <\/p>\n <\/p>\n After creating the files, chmod them so that they are:<\/p>\n -rw-r–r–\u00a0\u00a0\u00a0\u00a0 StartupParameters.plist Also, I set the owner and group to “root” and “wheel” respectively to match the other items in the \/Library\/StartupItems directory … (“chown -R root \/Library\/StartupItems\/Unmount\/” and “chgrp -R wheel \/Library\/StartupItems\/Unmount\/”)<\/p>\n <\/p>\n For additional details see:<\/p>\n http:\/\/hints.macworld.com\/article.php?story=2005052804075538<\/a><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" To umount a Macintosh volume at start-up (for example the windows bootcamp volume) you can create a startup item … In: \/Library\/StartupItems Create a directory “Unmount”\u00a0 in that directory you want to put 2 files: Unmount and StartupParameters.plist Unmount … Continue reading
\n. \/etc\/rc.common
\nif [ “$1” == “start” ]
\nthen
\n\/usr\/sbin\/diskutil unmount \/dev\/diskXXX
\nfi<\/p><\/blockquote>\n
\n<!DOCTYPE plist PUBLIC “-\/\/Apple Computer\/\/DTD PLIST 1.0\/\/EN”
\n“http:\/\/www.apple.com\/DTDs\/PropertyList-1.0.dtd”>
\n<plist version=”1.0″>
\n<dict>
\n<key>Description<\/key>
\n<string>Try to unmount the old disk<\/string>
\n<key>Provides<\/key>
\n<array>
\n<string>Unmount<\/string>
\n<\/array>
\n<\/dict>
\n<\/plist><\/p><\/blockquote>\n
\n-rwxr-xr-x\u00a0\u00a0 Unmount<\/p>\n