diff --git a/charts/talm/templates/_helpers.tpl b/charts/talm/templates/_helpers.tpl
index f1a9601..0876fb2 100644
--- a/charts/talm/templates/_helpers.tpl
+++ b/charts/talm/templates/_helpers.tpl
@@ -1,14 +1,7 @@
 {{- define "talm.discovered.system_disk_name" }}
-{{- $disk := "" }}
-{{- range .Disks }}
-{{- if eq $disk "" }}
-{{- $disk = .device_name }}
+{{- with (lookup "systemdisk" "" "system-disk") }}
+{{ .spec.devPath }}
 {{- end }}
-{{- if .system_disk }}
-{{- $disk = .device_name }}
-{{- end }}
-{{- end }}
-{{- $disk }}
 {{- end }}
 
 {{- define "talm.discovered.machinetype" }}
@@ -23,28 +16,17 @@
 
 {{- define "talm.discovered.disks_info" }}
 # -- Discovered disks:
-{{- range .Disks }}
-{{- if .wwid }}
-# {{ .device_name }}:
-#    model: {{ .model }}
-#    serial: {{ .serial }}
-#    wwid: {{ .wwid }}
-#    size: {{ include "talm.human_size" .size }}
+{{- range (lookup "disks" "" "").items }}
+{{- if .spec.wwid }}
+# {{ .spec.dev_path }}:
+#    model: {{ .spec.model }}
+#    serial: {{ .spec.serial }}
+#    wwid: {{ .spec.wwid }}
+#    size: {{ .spec.pretty_size }}
 {{- end }}
 {{- end }}
 {{- end }}
 
-{{- define "talm.human_size" }}
-  {{- $bytes := int64 . }}
-  {{- if lt $bytes 1048576 }}
-    {{- printf "%.2f MB" (divf $bytes 1048576.0) }}
-  {{- else if lt $bytes 1073741824 }}
-    {{- printf "%.2f GB" (divf $bytes 1073741824.0) }}
-  {{- else }}
-    {{- printf "%.2f TB" (divf $bytes 1099511627776.0) }}
-  {{- end }}
-{{- end }}
-
 {{- define "talm.discovered.default_addresses" }}
 {{- with (lookup "nodeaddress" "" "default") }}
 {{- toJson .spec.addresses }}
diff --git a/pkg/engine/engine.go b/pkg/engine/engine.go
index 183d18f..2e9311e 100644
--- a/pkg/engine/engine.go
+++ b/pkg/engine/engine.go
@@ -151,28 +151,6 @@ func Render(ctx context.Context, c *client.Client, opts Options) ([]byte, error)
 		if err := helpers.FailIfMultiNodes(ctx, "talm template"); err != nil {
 			return nil, err
 		}
-
-		response, err := c.Disks(ctx)
-		if err != nil {
-			if response == nil {
-				return nil, fmt.Errorf("error getting disks: %w", err)
-			}
-		}
-		for _, m := range response.Messages {
-			for _, d := range m.Disks {
-				dj, err := json.Marshal(d)
-				if err != nil {
-					return nil, err
-				}
-				var disk map[string]interface{}
-				err = json.Unmarshal(dj, &disk)
-				if err != nil {
-					return nil, err
-				}
-				helmEngine.Disks[d.DeviceName] = disk
-			}
-		}
-
 		helmEngine.LookupFunc = newLookupFunction(ctx, c)
 	}
 
diff --git a/pkg/generated/presets.go b/pkg/generated/presets.go
index ab2a109..b03008a 100644
--- a/pkg/generated/presets.go
+++ b/pkg/generated/presets.go
@@ -224,16 +224,9 @@ version: %s
 description: A library Talm chart for Talos Linux
 `,
 	"talm/templates/_helpers.tpl": `{{- define "talm.discovered.system_disk_name" }}
-{{- $disk := "" }}
-{{- range .Disks }}
-{{- if eq $disk "" }}
-{{- $disk = .device_name }}
+{{- with (lookup "systemdisk" "" "system-disk") }}
+{{ .spec.devPath }}
 {{- end }}
-{{- if .system_disk }}
-{{- $disk = .device_name }}
-{{- end }}
-{{- end }}
-{{- $disk }}
 {{- end }}
 
 {{- define "talm.discovered.machinetype" }}
@@ -248,26 +241,15 @@ description: A library Talm chart for Talos Linux
 
 {{- define "talm.discovered.disks_info" }}
 # -- Discovered disks:
-{{- range .Disks }}
-{{- if .wwid }}
-# {{ .device_name }}:
-#    model: {{ .model }}
-#    serial: {{ .serial }}
-#    wwid: {{ .wwid }}
-#    size: {{ include "talm.human_size" .size }}
-{{- end }}
+{{- range (lookup "disks" "" "").items }}
+{{- if .spec.wwid }}
+# {{ .spec.dev_path }}:
+#    model: {{ .spec.model }}
+#    serial: {{ .spec.serial }}
+#    wwid: {{ .spec.wwid }}
+#    size: {{ .spec.pretty_size }}
 {{- end }}
 {{- end }}
-
-{{- define "talm.human_size" }}
-  {{- $bytes := int64 . }}
-  {{- if lt $bytes 1048576 }}
-    {{- printf "%.2f MB" (divf $bytes 1048576.0) }}
-  {{- else if lt $bytes 1073741824 }}
-    {{- printf "%.2f GB" (divf $bytes 1073741824.0) }}
-  {{- else }}
-    {{- printf "%.2f TB" (divf $bytes 1099511627776.0) }}
-  {{- end }}
 {{- end }}
 
 {{- define "talm.discovered.default_addresses" }}