LOst my data in dual boot computer having windows 8 and linux mint 14

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http://askubuntu.com – i had windows 8 on my laptop. wanted to increase its efficiency so i had installed linux mint 14 alongwith windows 8 however both were loaded on same partition. iwas getting some problem on partition load and data proceesion, so i decided to completely uninstall windows 8 and have linux mint only. however,when uninstalling windows 8 using gparted i deleted the windows partition. but rest of the steps of 'sudo update- grub' could not be compeleted in terminal.i resized the sda1 however,rest of the drives were nt touched as they had my data. but i when i tried to access them i could not... afte (HowTos)