Check the Drive Partition in Disk Management
Even though the drive may not be visible on the Desktop or in My Computer check to see if the drive is recognized in Disk Management
Right click on My Computer and select Manage from the menu From the Computer Management window select Disk Management from the menu on the left
In Disk Management check to see if the drive is visible
If the drive is found look at the partition for the drive
New drives will be labelled as FAT32 and have a drive letter assigned
If the drive does not display as Healthy or shows the file format as RAW then the partition has become corrupt
It could also be corrupt if the bar above the drive is black and shows as Unallocated
To make the drive usable again after a partition has become corrupt or lost start by right clicking on the drive in Disk Management and select Delete partition from the menu
Then right click on the drive again and select create partition from the menu
Follow the steps in the partition wizard to create a Primary partitionNOTE: Deleting the partition will cause all data on the drive to be lost. If the partition has become corrupt this may be unavoidable
Hitachi Global Storage Technologies is not responsible for lost data
It is highly recommended that data be backed up in multiple locations on multiple drives to minimize data lossAfter the new primary partition has been created Disk Management will display the drive with an NTFS partition
The NTFS partition is unusable on a Mac. If the drive is used on Macintosh and Windows computers follow the link below to obtain a FAT32 formatting tool which will allow both Windows and Macintosh users to use the drive
hope it helps
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