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Disk 1 unknown not initialized external hard drive

broken image

Below are different recommendations to try before assuming the diskette, disc, or other disk is bad. Before you start the I/O device error fixes, there is one thing to try first.Ī disk I/O error occurs any time the computer cannot read a diskette, disc, or other disk in the computer. Solution 5: Check and Repair Device in Command Prompt.Solution 4: Change the drive transfer mode in IDE Channel Properties.Solution 2: Update or Re-Install the Drivers.Solution 1: Check all cables connections.The Easiest Solutions to Fix Hard Disk I/O Device Error