sudo bless -mount \/Volumes\/”name of your startup disk” -setBoot<\/p>\n
So, if the desired disk was named \u201cTestDisk\u201d you would type this:<\/p>\n
sudo bless -mount \/Volumes\/TestDisk -setBoot<\/p>\n
If your disk name has spaces in it you\u2019ll need to put quotes around the path to the disk, like this:<\/p>\n
sudo bless -mount “\/Volumes\/My Disk” -setBoot<\/p>\n
You can incorporate this into a UNIX shell script to reboot your machine to another disk at a certain time. Perhaps you want to reboot to another disk every Friday to run a disk utility on it, or to image it.<\/p>\n
#!\/bin\/bash
\nbless -mount \/Volumes\/TestDisk -setBoot
\nshutdown -r now<\/p>\n