Could Not Be Performed Because of an I/O Device Error, What to Do?  

Could Not Be Performed Because of an I/O Device Error, What to Do?


Table of Contents
  1. The Scenario
  2. Possible Causes for I/O Device Error
  3. Resolutions to Hard Drive I/O Device Error
    1. Close other software
    2. Check and fix bad sector
    3. Resize the partition
    4. Format to factory default
    5. Check physical sectorsize

The Scenario

When performing a backup to external hard drive on Windows Server 2003/2008/2012 (R2)/SBS 2003/2008/2011 or Windows 10/8.1/8/7/XP/Vista, you may encounter the following error messages:

Backup Failed

Possible Causes for I/O Device Error

Resolutions to Hard Drive I/O Device Error

You may try one or more steps to get the hard drive I/O device error fixed.

Close other software

Some security applications may prevent the backup utility from accessing the hard drive. You can close all the other non-system processes. You may also need to disable antivirus software temporarily. If the I/O device error persists, you can boot your computer into safe mode to try the backup again. This way will reduce the impact of third-party applications to a minimum.

Check and fix bad sector

1. Rress "Win+R" and type "cmd" in the box and press Enter. You should run it as administrator.

2. At the pop out command prompt, type in the following command "chkdsk X: /f /r" and press Enter. "X" represents the drive letter of the partition you want to check, "/f" represents the command to fix errors and "/r" to locate bad sectors and recover readable information.

CHKDSK Command

3. After the process is finished, reboot and retry the backup task.

Resize the partition

Shrink or extend the partition to carry the last cluster to another location and run the "chkdsk" command again. In Disk Management, right-click the partition you want to shrink, and click "Shrink Volume". Then follow the pop out Shrink Volume wizard to process. You can also use third party software to resize partition without data loss.

Shrink Volume

Format to factory default

Format your hard disk drive to Factory Default with WD Quick Formatter tool and retry. Note that formatting your hard drive to Factory Default will cause it not recognizable in Windows XP and all the data on it wiped out, so backup hard disk if there is valuable data on it.

Check physical sectorsize

If it still fails with the same error after these steps, your hard disk should be advanced format (4K) disk. You may consider switching another hard disk drive to backup to or upgrading your Windows in order to fix the problem that the request could not be performed because of an I/O device error.

There are two types of advanced format (4K) disks, one is 512-byte emulation (512e), which reports 512-byte as its logical sector size and 4KB as its physical sector size, the other is 4 KB native, which has 4 KB as its logical and physical sector size.

Advanced format (4K) disk with 512-byte emulation is supported on Windows 8,Windows Server 2012,Windows 7 w/ MS KB 982018,Windows 7 SP1,Windows Server 2008 R2 w/ MS KB ,982018,Windows Server 2008 R2 SP1,Windows Vista w/ MS KB 2553708,Windows Server 2008 w/ MS KB 2553708.

To get the physical and logical sector size, you can run the command "fsutil fsinfo ntfsinfo" in an elevated command prompt. If it shows "Bytes per sector: 512" and "Bytes per Physical Sector: 4096", this is an advanced format (4K) disk with 512-byte emulation. If both lines show as 4096, it is a 4 KB native disk. If it shows "Bytes Per Sector: Not Supported", then the hard drive driver does not support IOCTL_STORAGE_QUERY_PROPERTY.

Emulation

If you still receive the error "the request could not be performed because of an I/O device error, you can try third party free backup software or upgrade your system. Advance Format 4K Native disk is supported on Windows 8, Windows 10, Windows Server 2012 (R2) and Windows 2016.

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