diff --git a/internal/os/disk/api.go b/internal/os/disk/api.go
index 6abcde08..5f34b682 100644
--- a/internal/os/disk/api.go
+++ b/internal/os/disk/api.go
@@ -118,7 +118,7 @@ func (APIImplementor) InitializeDisk(diskID string) error {
 }
 
 func (APIImplementor) PartitionsExist(diskID string) (bool, error) {
-	cmd := fmt.Sprintf("Get-Partition | Where DiskNumber -eq %s", diskID)
+	cmd := fmt.Sprintf("Get-Partition | Where DiskNumber -eq %s | Where Type -ne Reserved", diskID)
 	out, err := exec.Command("powershell", "/c", cmd).CombinedOutput()
 	if err != nil {
 		return false, fmt.Errorf("error checking presence of partitions on disk %s: %v, %v", diskID, out, err)