Yesterday I tried to do a recovery drive on my new Lenovo Yoga 2 Pro and didn't have the proper size USB drive, so I canceled out. After freeing up a 16GB USB drive (minimum required) to the backup I started the process over, then noticed "Copy the recovery partition from the PC to the recover drive" check box was grayed out and receive the following message "We can't create a recovery drive on this PC. Some required files are missing. To troubleshoot problems when your PC can't start, use your Windows installation disc or media."
I knew that I had blew away the recovery partition, so I tried the following: reagentc /enable
and now the check box is able to be checked.
Follow these instructions to make the recovery drive:
Step 1: Connect a USB drive to the computer and backup all data before proceeding to the next step as the drive will be erased during the process.
S tep 2: Switch to desktop mode. Press Windows + R keys to launch Run dialog. In the dialog type control.exe and then press enter key to launch the Control Panel.
Step 3: Click on change View by to Small Icons to view all tools and options. Click on Recovery to launch Recovery window.
Step 4: Next, click on Create a recovery drive option. Click Yes for the User Account Control prompt to launch Create a recovery drive wizard. If you are asked to enter the admin password, please do so.
Step 5: Click Next button, the wizard will scan the computer for all connected USB drives.
Step 6: In the following screen, select the USB drive that you wish to use as recovery drive and then click Next button, and finally click Create button. Windows will transfer required files onto the drive and the recovery drive should be ready.
Note: For what it's worth, I am not a Microsoft employee or any other manufacture employee, so please take the time to vote for this if it has helped you; this lets others know that it is a valid fix for this problem!