I have a external hard drive that has data on it but has now become unallocated Tags: Hard Drives External Hard Drive Storage Last response: February 11, 2012 4:09 PM in Storage Share magicmanuk February 11, 2012 3:48:10 PM Hello, i have a external hard drive that windows detected and allocated a drive letter it has over 400gig of data on it but has now become unallocated how do i allocate it without loseing data More about : external hard drive data unallocated szaboaz a b G Storage February 11, 2012 4:09:22 PM Hi, check out this thread with similar problem and some answers: http://www.tomshardware.co.uk/forum/280136-14-hard-driv... Can't find your answer ? Ask ! Publish Related resources: ForumWhat would cause a RAID0 to become Unallocated ? ForumExternal drive was readable , now unallocated ? Forum37 25 GB unallocated on a 1TB external hard drive ForumHard drive has become unallocated for no apparent reason (windows 7) ForumPartition in RAID 1 array became unallocated ForumNeed help viewing unallocated data on HD ForumHard drive has become inaccesible.. ForumM4 entire data now completely unallocated ! Forum**RAW External Hard Drive Fix??** Forum300 gig full of data now " unallocated " after pc unplugged? ForumHow do I combine two Hard Drives to become one drive ? ForumExternal Hard Drive Issue ForumClone/backup multiple computers' hard drives onto single external HD? ForumUnallocated disk drive problem and clone question Forum4tb hdd is being read as 2tb hdd More resources Read discussions in other Storage categories Hard Drives DVD Drives DVD Writers Optical Media Flash Media NAS/RAID SSD Western Digital !