“The parameter is incorrect” file copying error in Windows 10, 8 or 7

By: Matthew Adams
4 minute read

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“The parameter is incorrect” is a fairly frequent error message that pops up for some users when attempting to copy a file or folder from a PC to USB drive or external hard drive. When that happens, an Error Copying File or Folder window opens stating, “The parameter is incorrect.” Consequently, the file or folder doesn’t copy to the storage device.

This might just be due to your target drive not having enough storage space, a corrupted file system or that the file you’re attempting to copy exceeds the maximum file size the external drive can store.

How to fix “The parameter is incorrect” error

Check the Amount of Space on the External Storage Device

First, check how much space is available on the USB drive or external hard disk. You might not have enough storage space for the file you’re copying. You can check available drive storage space in File Explorer by right-clicking the pertinent drive and selecting Properties. That opens the window directly below which shows both free and used space.


Compress or Split up a Larger File

If there’s enough storage space on the external drive, check the size of the file that isn’t copying. Does it eclipse four GB? If so, that’s probably why you can’t copy it to the external storage device. Lots of USB sticks, and other storage drives, still have the FAT32 file system that supports file sizes up to four GB only. So you can’t save files larger than four GB to FAT32 external storage.

If the file is larger than four GB, you might be able to fix the parameter error by reducing the file’s size. You can do that either by compressing or splitting it up into smaller pieces. 7-Zip is a freeware utility that you can both compress and split files with. Click either the 32 or 64-bit Download link on this website page to save the software’s installer to Windows. Once you’ve installed the utility, you can compress and split four GB files as follows.

  • Open 7-Zip in Windows.
  • Browse to the folder that includes the file you need copy.

  • Right-click the file you need to compress, and then select 7-Zip > Add to archive to open the window directly below.

  • Select a compression format from the Archive format drop-down menu. Zip has one of the best compression ratios.
  • Press OK to close the window and save the archive, which saves in the same folder as the original file.
  • To split a file, right-click it and select Split file. That opens the window shown directly below.

  • Select a value to split the file by from the Split to volumes, bytes drop-down menu.
  • You can also choose a path to save to by pressing the button.
  • Press OK to split the file.
  • When you need to merge the files together again, select them, right-click and click Combine files to open the window below. Press OK to merge the files together.


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  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

  • When you’ve compressed or split the file you need to copy, it must be less than four GB. If so, copy the archive, or split files, to the external storage drive.

Convert the Storage Device to NTFS

Alternatively, you can convert the storage device to NTFS, which is a file system that supports single files larger than four GB. You can convert external storage drives to NTFS with partition manager software such as EaseUS Partition Master. Press the Free Download button on this page to save the freeware EaseUS Partition Master installer to Windows. Run through the setup wizard to add the software to Windows. Then convert the storage drive to NTFS as follows.

  • First, plug the storage drive to convert to NTFS into your desktop or laptop.
  • Open the EaseUS Partition Manager window.
  • Then you can right-click the required disk drive and select Convert to NTFS.
  • A pop up dialog box will open. Press OK and click Apply to convert the storage drive to NTFS.

Format the Drive to NTFS

Or you can convert the storage drive to NTFS by formatting it. However, formatting drives also erases their files. So if you need to keep the drive’s content intact, back it up before formatting. Then format the storage device to NTFS as follows.

  • Insert the USB stick or external hard drive to format into a desktop or laptop.
  • Open the File Explorer window.
  • Now you can right-click your external drive, and select Format from the context menu to open the window in the snapshot directly below.

  • Select NTFS from the File system drop-down menu.
  • Press the Start button to format the storage drive.

Fix the Drive’s File System

If you can’t copy files less than four GB to the external drive, your storage device might have a corrupted file system. You can fix storage drives with the Check Disk, or Chkdsk, tool in Windows. That’s a tool which scans file systems on drives, and Check Disk provides repairs for anything that needs fixing. This is how you can scan storage drives with Check Disk.

  • Insert the USB stick or external hard drive into a suitable slot on PC.
  • Open File Explorer and right-click your USB stick or external hard drive to open the context menu.
  • Select Properties on the Context menu.
  • Click Tools to open the tab in the shot below.

  • Press Check to open the window below.

  • Press the Scan and repair drive button to scan the external storage.
  • If the scan reveals anything, Windows will present a repair option to fix the external storage with.

Those are a few effective fixes for external drives with parameter errors. In most cases, “The parameter is incorrect” error is usually due to the drives’ four GB file restriction. So the best fix is probably to convert the storage drive to NTFS.

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For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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