D:\ is not accessible. The parameter is incorrect


Updated on May 13th, 2021

 Drive not accessible. The parameter is incorrect

It frequently occurred that partition on hard drive or external hard drive can’t be opened and reports the error like “D:\ is not accessible. The parameter is incorrect.”

The parameter is incorrect

Various reasons can lead to this problem:  

  • Power failure for powered hard drive;
  • Plug out hard drive in an improper way;
  • Virus attack;
  • File system goes wrong;
  • Bad sectors.

How to deal with this problem without losing files in the partition? If you Google this problem, you’ll find many answers that suggest performing chkdsk or formatting, however, after which files will get lost.

How to recover data when drive is not accessible?

Step 1: Connect the storage device which is not accessible and reports “The parameter is incorrect” to computer. Then it can be recognized by your system. If your computer fails to detect it then try another USB port or PC.

Step 2: Download, install and launch Eassos Recovery to PC. Select the first recovery mode and enter next interface. This feature is capable of restoring lost data from damaged, RAW or formatted partitions.

The parameter is incorrect

Step 3: Select the icon representing the inaccessible partition and click “Next” to continue.

Step 4: Eassos Recovery checks partition information and searches for lost files and file directory. It displays files while scanning process is working and keeps updating scanning results as more files are found out.

The parameter is incorrect

Users are allowed to preview files while scanning is working and they can pause or stop scanning if all desired files have been found and there is no need to make further scanning.

Step 5: Save files to a safe location such as any healthy partition that has enough disk space to hold these files and doesn’t need recovering data.