My macbook pro doesnt recognize my toshiba canvio 3.0 external hard drive

SOURCE: Hello I have a Toshiba

Hi kwooz109,
To fix the External HDD.
Take these steps.

First, click to open the Computer, on your "Desktop Screen"

or click on the "Start Button.
In the (right, shortcut menu), select to open the Computer, by {right} clicking on it.
Check to see if there's a External Hard Drive 'letter ie; [F:] ?

• If the area is (Blank)?
• Go to, and select the Control Panel, by clicking on the Start Button.
• Scroll to find: the"Hardware and Sound category, and click on it to open.
• Next, select the "Device Manager."

In the [Device Manager]; check to see: if there is a [Disk Drive] Icon?

• You need to "Update the Drivers."
• Open the "Disk Drive" by {2x clicking} on it.
• Select the {Driver Button}, click on it to 'start the update.'
• Follow all the instructions!
• Click on the Apply and OK buttons when finished!"
• Restart the Computer, to finish!"

!Attention: If 'problem still exist?

• "Perform a "System Restore!"

{Start Button -> All Programs -> Accessories -> System Tools -> System Restore}

• "Choose; most [Recent Restore Point] ie: Ext. HDD not' recognized!"

"Please let me know if you 'need' further assistance; by posting a "Comment 'or' Rating the Solution." Thanks, your 'response' is important!"

paul7of9

SOURCE: How to format a Toshiba

Just make sure you have any and all data that you want saved moved elsewhere before proceeding.