Frequently Asked Questions

When checking for the presence of a USB key, Perennity uses the Windows "wmic" command to check for the presence of removable drives. This command may however not be accessible by default, so launching it will fail. To solve this problem you should add its path to the environment variables by adding the following paths to the 'Path' parameter of your system variables:

C:\Windows\System32\wbem;C:\Windows\SysWOW64\wbem

It may also be necessary to start the Perennity services ( Autoloader and DICOM Burner ) with a user account, not the local system account.

Finally restart the PC.

To verify if the "wmic" command can be successfully executed now, type "wmic" in a command prompt. This should change your command prompt to 'wmic:root\cli>'. Then use the command "logicaldisk get drivetype,description" to list all drives in the system, as shown in the example hereunder.

C:\Windows\System32>wmic
wmic:root\cli>logicaldisk get drivetype,description
Description DriveType
Local Fixed Disk 3
CD-ROM Disc 5
Local Fixed Disk 3
CD-ROM Disc 5
Local Fixed Disk 3
Removable Disk 2
Network Connection 4

wmic:root\cli>

Use the "exit" command to return to exit "wmic" and return to the default Windows command prompt.