And you have2 : Bad file or directory type
This error is returned if a file requested is not a regular file, but something like a symbolic link, directory, or FIFO.
Have you ever managed to boot or is this at the first boot?Disk /dev/sdb doesn't contain a valid partition table.
Anyway it seems that the disk sdb is corrupted, the errors add up....
Don't despair, but open your computer (which probably is a desktop - very few laptops have two disks) and check that the cables are firmly attached to the disk. Errors in this area are much more common with IDE disks, but occur with SATA as well.
If they were, try to boot with sdb disconnected.
If you still have a failure let's hope you have a real Windows CD.
Boot with it, and run fixmbr. Now my Windows knowledge is slightly fading, but I believe there is an option to use the recovery console and that's the option to use.
After running fixmbr you loose grub and will have to repair it - no big deal
http://www.linuxmint.com/wiki/index.php ... _your_grub
If you don't have a real Windows CD post back with details of your Windows
An install in sda does not affect sdb, but the error may have been tolerated by Windows