Windows 10: Toshiba ex-internal drive (now external) not being recognized

My Acer Windows 10 notebook had a 1 tb Toshiba internal hard drive. A few months ago I replaced that hard drive with an SSD. I now use that hard drive to periodically clone the SSD back to the hard drive for a full backup. During that process, the hard drive is connected to the Acer by a cable from the hard drive to a USB port. All has been fine until last night when the clone process didn't complete. I then found that the plugged-in hard drive didn't appear in File Explorer (it had been drive E). When connected to the USB port, I can feel the disk operating but it's still not being recognized as being connected.

Ideas?

:)

 

Toshiba Announces New 6 TB Internal and External Hard Drives

Toshiba's Digital Products Division (DPD), a division of Toshiba America Information Systems, Inc., today introduced a 6 TB capacity for the Toshiba Canvio Desk 3.5" External USB 3.0 Hard Drive and Toshiba Desk 3.5" Internal Serial ATA 3.0 Hard Drive, devices that provide a convenient and reliable way to increase the storage capacity of your computer either as an upgrade or extension of your computer.

The Canvio Desk external hard drive is preloaded with software to make backup fast and simple. The system recovery software scans your system and recommends the best coverage for your computer. Choose between backing up your files to the cloud or backing up your files and folders to your Canvio Desk hard drive. "Toshiba has been developing and manufacturing hard drives for more than 20 years," said Maciek Brzeski, Vice President of Branded Storage Products, Toshiba Digital Products Division. "The time is right to upgrade our offerings not only to meet, but to exceed consumers' expectations by expanding the offerings of our internal and external 3.5" hard drives."





Toshiba has been providing storage solutions worldwide since 1967 and has more than 47 years of experience developing storage offerings that complement our comprehensive ecosystem of devices. Leveraging an annual $3.1 billion investment in Toshiba Corporation's worldwide research and development, Toshiba continues to push the boundaries of storage technology to meet customers' needs.

Pricing and Availability

The Canvio Desk 3.5" Internal and External Hard Drives will be available for purchase in May 2015 at select retailers and on toshiba.com for $369.00 MSRP for both the 6TB internal and external models. A three year Standard Limited Warranty4 is included with each model sold in the Americas.

 

Nextbook 9" not recognizing external Toshiba hard drive

My nextbook flex running Windows 10 isn't recognizing my Toshiba 500 gb external drive.

 

external hard drive not recognized

Hello zbook
#1) I have tested the external drives in three different computers, win10 pro, Win10, and XP. The results are identical. When I plug in the external hard drive windows signals a new device with an audio signal and the light comes on on the external drive. The results on all three pc's is identical in disk manager, file explorer and device manager.
#2) I have tried all solutions presented to me by FreeBooter, from the simplest solution of uninstalling the external drive in device manager and rebooting windows, to using the various third party software that was suggested, obviously with out success.
#3) The attached screen shots will only show one of the drives attached because I don't have enough free USB ports to attach two drives and I didn't think it would have been a good idea to use a hub.
#4) one strange thing about one of the drives is that now device manager lists it as a Toshiba drive although it is a Western Digital.
#5) Sorry but I have no way of getting a photo of BIOS










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