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Windows 7: External Hard Drive Not Detected

31 Aug 2010   #21

Windows 7 Ultimate x64


Just like Shorty920, I also registered solely to say thanks. It was exactly a power issue with my external HD, and once I followed your advice about powering up the drive first and then connecting it to the USB port, the OS finally recognized the drive. Thanks so much for the help.

My System SpecsSystem Spec
31 Aug 2010   #22

Windows 7

Sfraser, so glad. another yeehaw for sharing solutions!
My System SpecsSystem Spec
27 Dec 2010   #23

windows 7 home premium
External Drive

I have same problem, bought an external hard drive of samsung, it was working fine but i think since last window update it is not showing in drives. i was thinking that there is something wrong with my pc ,but now i learned half world is dancing with this problem.
I also have another problem , and that is here : i dont find printers often and then i start system again and again then they appear..printer means i have pdf writer/office/and efax
My System SpecsSystem Spec

01 Jan 2011   #24

Windows 7 Ultamate

I just bought Seagate 1TB put it in a Perfectly working 3.5 external case and i cant seem to get it to show up on XP or Windows 7 is there something i need to do to this drive before i just put it in there and go

thaks for any time and info you give me
My System SpecsSystem Spec
01 Jan 2011   #25
Microsoft MVP

Windows 7 Ult. x64


How is the external enclosure connected to the PC?

My System SpecsSystem Spec
01 Jan 2011   #26

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)

If it is a bare raw unformatted HD, it needs to be initalized & formatted.

Look for it in disk management

Start Computer Management Disk Management

Attached Thumbnails
External Hard Drive Not Detected-disk_mgmt_new_hd_500gb_wd_initialize.jpg  
My System SpecsSystem Spec
01 Jan 2011   #27

Windows 7 Ultamate

external USB 2.0 it wants me to

Select Partition Type

Primary Partition
Extended Partition
its only going to be external what one should i choos please thanks i found it in there right away
My System SpecsSystem Spec
01 Jan 2011   #28

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)

I always use primary :)
My System SpecsSystem Spec
01 Jan 2011   #29

Windows 7 Ultamate

do you know of a page i can read and how to partition the drive with more then 4 partitions please isthere a way thakns
My System SpecsSystem Spec
27 Apr 2011   #30

Windows Home Premium 32bit

I bought a new external hard drive today and although windows 7 initially picked it up and tried to install the drivers when this failed (unknown error without an error number) the drive disappeared and is not showing anywhere not even disk management is picking it up.
Any ideas on this as I tried disconnecting the USB hub and plugging the drive straight into the laptop. I have 2 other external hdd's which are detected without any issues. I'm currently tearing what's left of my hair out.
My System SpecsSystem Spec

 External Hard Drive Not Detected

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