hdd doesnt show during format

[neeronjun]

recently i tried to dual boot ubuntu in my windows 7.. but while installing ubuntu i cancelled and restarted the instalation. it installed and asked me to restart. but when i restarted. the ubuntu boot shows no data found as well as 7 also shows boot error. I tried to boot win 7 from pendrive. it boots but when it comes to disk partition select nothing shows up in the partitions area... please help

 

[CountMike]

It can't recognize boot partition format due to Linux changing it to install it's own. When you start W7 installation you'll have Advanced option to delete all partitions and make new one or let windows make it's own partitions.