http://forums.crucial.com/t5/Solid-...id-my-SSD-disappear-from-my-system/ta-p/65215
A laptop computer will also work, but youll have to connect the drive and navigate to the system's BIOS menu. (Please refer to your system manufacturers documentation on how to access the BIOS.) Allowing the drive to sit in the BIOS will improve the odds that the power cycle will work. For laptops, we dont recommended using a USB enclosure powered via USB. In addition, Apple users must hold the Option key while they power on the system (with the SSD installed). This will boot the Mac to the Startup Manager screen. The Startup Manager screen works like the BIOS screen on a laptop, in that it gives the drive power without any data throughput.
1. Laptop users will need to be in the BIOS menu, or Mac Startup Manager as stated above. The computer will need to stay powered for 20 minutes. We recommend you dont use the laptop during this process.
2. Power the computer down and disconnect the drive for 30 seconds, by removing it from the drive bay. If you have an mSATA drive, remove it from the port.
3. Reconnect the drive, and repeat steps 1 and 2 one more time.
4. Reconnect the drive normally, and boot the computer to your operating system.
5. If the latest firmware is has not been updated to your drive, do so. Click here for our firmware updates.