Take the 2-minute tour ×  I backed up all important data prior
to formatting the C: drive, but I cannot read the backup drive
after reinstalling Windows. More details provided after the
screenshots.   As you can see, there are three physical disks in
this system: - 1TB System (C:) drive. - 0.5TB basic MBR disk
(D:) for general storage. - 3TB basic disk with a single 3TB GPT
partition (E:) for general storage.  Since the D: drive did not
have enough free space, I used the 3TB GPT E: drive to backup
everything I needed from the C: drive before formatting.  The
3TB E: drive was initialized as GPT and formatted as NTFS using
the disk management GUI from Windows 7 Ultimate x86 while it was
still installed. However, after formatting the C: drive and
installing Windows 8 Enterprise x64, I get the "GPT Protective
Partition" problem shown in the screenshot above. Almost all
options in the right-click menus are greyed out, so I don't even
know where to begin.  I've found a lot of interesting ideas on
the internet, but