I connected an external harddisk to my computer and it is requesting to format a partition

Sai_Mohan

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Dec 19, 2015
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One partition(Y) is working normally while other partition(Z) is requesting to be formatted.
When i performed Check Disk using cmd I found the error as
" The type of the file system is NTFS.
The First NTFS boot sector is unreadable or corrupt.
Reading second NTFS boot sector instead.
Unable to determine volume version and state. CHKDSK aborted."