Issue

Cannot install Windows 8.1 on MacBook Pro 13.3 Retina (OS X Yosemite) from an external DVD drive. After booting from the Windows 8.1 installation DVD and trying to install Windows on BOOTCAMP partition, following error is displayed:

Windows cannot be installed to this disk. The selected disk is of the GPT partition style.
Windows cannot be installed to this hard disk space. Windows must be installed to a partition formatted as NTFS.

Trying to format the partition doesn't help.

Read more: Windows cannot be installed to this disk. The selected disk is of the GPT partition style

To disable per user startup items go to System Preferences > Users and Groups, then click on Login Items. To disable a startup item, simply uncheck the checkbox next to the item you want to disable. To add a new startup item, click on the + (plus) sign.

Read more: Disable startup items in Mac OSX

Mac OS X has several built-in shortcuts to take screenshots. Since Mac OS X 10.4 (Tiger) screenshots are saved in png format.

• Take screenshot of  the whole screen
  Command + Shift + 3
• Take screenshot of selected area
  Command + Shift + 4 > select area
• Take screenshot of a selected Window
  Command + Shift + 4 > press Space > select Window

Screenshot files will be saved on the Desktop.

Read more: Take screenshot on Mac OS X

To open Windows share on Mac OS X:

• Open Finder
• Go > Connect to Server
  
  

  Read more: Open Windows (SMB) share on Mac OS X