Split

Copy the image chunks from CD or DVD discs to a local or external hard disk, or to a network share, and restore the files

If an archive is split in several volumes, recovery can fail for the first time. It should work correctly if you reattempt the restore

Acronis Disk Director reboots in Windows Native Mode to commit pending changes, but the operation either fails with an error or completes with no result

Instructions on how to troubleshoot issues with backing up to a network share in Windows

This is a known limitation. As a workaround, copy all volumes from the flash drives to one folder. You will then be able to restore