If the Network Disk icon is selected in the Startup Disk control panel, and the computer is not connected to a NetBoot server, the computer will take significantly longer to start up.
Symptom
The following startup sequence is observed:
2. A flashing or blinking globe appears on the screen. (This can last several minutes.)
3. A folder that has an alternating flashing question mark and the Mac OS logo inside appears on the screen. (This can last several minutes.)
4. The computer starts up normally.
Solution
This is happening because Network Disk is selected in the Startup Disk control panel and no NetBoot servers are available.
To resolve this issue, follow these steps:
2. Select the appropriate startup disk icon.
3. Close the Startup Disk control panel.
4. Restart the computer.