diff --git a/internal/site/src/locales/cs/cs.po b/internal/site/src/locales/cs/cs.po
index fe2da47c..17a83a69 100644
--- a/internal/site/src/locales/cs/cs.po
+++ b/internal/site/src/locales/cs/cs.po
@@ -8,7 +8,7 @@ msgstr ""
 "Language: cs\n"
 "Project-Id-Version: beszel\n"
 "Report-Msgid-Bugs-To: \n"
-"PO-Revision-Date: 2026-04-05 18:27\n"
+"PO-Revision-Date: 2026-04-05 20:36\n"
 "Last-Translator: \n"
 "Language-Team: Czech\n"
 "Plural-Forms: nplurals=4; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 3;\n"
@@ -22,7 +22,7 @@ msgstr ""
 #: src/components/footer-repo-link.tsx
 msgctxt "New version available"
 msgid "{0} available"
-msgstr ""
+msgstr "{0} k dispozici"
 
 #. placeholder {0}: table.getFilteredSelectedRowModel().rows.length
 #. placeholder {1}: table.getFilteredRowModel().rows.length
@@ -209,10 +209,19 @@ msgstr "Průměr klesne pod <0>{value}{0}</0>"
 msgid "Average exceeds <0>{value}{0}</0>"
 msgstr "Průměr je vyšší než <0>{value}{0}</0>"
 
+#: src/components/routes/system/disk-io-sheet.tsx
+msgid "Average number of I/O operations waiting to be serviced"
+msgstr "Průměrný počet I/O operací čekajících na vyřízení"
+
 #: src/components/routes/system/charts/gpu-charts.tsx
 msgid "Average power consumption of GPUs"
 msgstr "Průměrná spotřeba energie GPU"
 
+#: src/components/routes/system/disk-io-sheet.tsx
+msgctxt "Disk I/O average operation time (iostat await)"
+msgid "Average queue to completion time per operation"
+msgstr "Průměrná doba od zařazení do fronty po dokončení operace"
+
 #: src/components/routes/system/charts/cpu-charts.tsx
 msgid "Average system-wide CPU utilization"
 msgstr "Průměrné využití CPU v celém systému"
@@ -444,6 +453,11 @@ msgctxt "Environment variables"
 msgid "Copy env"
 msgstr "Kopírovat env"
 
+#: src/components/alerts/alerts-sheet.tsx
+msgctxt "Copy alerts from another system"
+msgid "Copy from"
+msgstr "Kopírovat z"
+
 #: src/components/systems-table/systems-table-columns.tsx
 msgid "Copy host"
 msgstr "Kopírovat hostitele"
@@ -476,7 +490,7 @@ msgstr "Kopírovat YAML"
 #: src/components/routes/system.tsx
 msgctxt "Core system metrics"
 msgid "Core"
-msgstr ""
+msgstr "Jádro"
 
 #: src/components/containers-table/containers-table-columns.tsx
 #: src/components/systemd-table/systemd-table-columns.tsx
@@ -550,7 +564,7 @@ msgstr "Denně"
 #: src/components/routes/system/info-bar.tsx
 msgctxt "Default system layout option"
 msgid "Default"
-msgstr ""
+msgstr "Výchozí"
 
 #: src/components/routes/settings/general.tsx
 msgid "Default time period"
@@ -599,19 +613,18 @@ msgstr "Disková jednotka"
 
 #: src/components/routes/system/charts/disk-charts.tsx
 #: src/components/routes/system/charts/disk-charts.tsx
-#: src/components/routes/system/charts/extra-fs-charts.tsx
 #: src/lib/alerts.ts
 msgid "Disk Usage"
 msgstr "Využití disku"
 
-#: src/components/routes/system/charts/extra-fs-charts.tsx
+#: src/components/routes/system/charts/disk-charts.tsx
 msgid "Disk usage of {extraFsName}"
 msgstr "Využití disku {extraFsName}"
 
 #: src/components/routes/system/info-bar.tsx
 msgctxt "Layout display options"
 msgid "Display"
-msgstr ""
+msgstr "Zobrazení"
 
 #: src/components/routes/system/charts/cpu-charts.tsx
 msgid "Docker CPU Usage"
@@ -898,6 +911,21 @@ msgstr "HTTP metoda"
 msgid "HTTP method: POST, GET, or HEAD (default: POST)"
 msgstr "HTTP metoda: POST, GET nebo HEAD (výchozí: POST)"
 
+#: src/components/routes/system/disk-io-sheet.tsx
+msgctxt "Disk I/O average operation time (iostat await)"
+msgid "I/O Await"
+msgstr "I/O Čekání"
+
+#: src/components/routes/system/disk-io-sheet.tsx
+msgctxt "Disk I/O total time spent on read/write"
+msgid "I/O Time"
+msgstr "I/O Čas"
+
+#: src/components/routes/system/charts/disk-charts.tsx
+msgctxt "Percent of time the disk is busy with I/O"
+msgid "I/O Utilization"
+msgstr "I/O Využití"
+
 #. Context: Battery state
 #: src/lib/i18n.ts
 msgid "Idle"
@@ -1207,6 +1235,10 @@ msgstr "Formát payloadu"
 msgid "Per-core average utilization"
 msgstr "Průměrné využití na jádro"
 
+#: src/components/routes/system/charts/disk-charts.tsx
+msgid "Percent of time the disk is busy with I/O"
+msgstr "Procento času, po který je disk zaneprázdněn I/O operacemi"
+
 #: src/components/routes/system/cpu-sheet.tsx
 msgid "Percentage of time spent in each state"
 msgstr "Procento času strávěného v každém stavu"
@@ -1259,7 +1291,7 @@ msgstr ""
 #: src/components/containers-table/containers-table-columns.tsx
 msgctxt "Container ports"
 msgid "Ports"
-msgstr ""
+msgstr "Porty"
 
 #. Power On Time
 #: src/components/routes/system/smart-table.tsx
@@ -1284,13 +1316,20 @@ msgstr "Proces spuštěn"
 msgid "Public Key"
 msgstr "Veřejný klíč"
 
+#: src/components/routes/system/disk-io-sheet.tsx
+msgctxt "Disk I/O average queue depth"
+msgid "Queue Depth"
+msgstr "Hloubka fronty"
+
 #: src/components/routes/settings/quiet-hours.tsx
 msgid "Quiet Hours"
 msgstr "Tiché hodiny"
 
 #. Disk read
 #: src/components/routes/system/charts/disk-charts.tsx
-#: src/components/routes/system/charts/extra-fs-charts.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
 msgid "Read"
 msgstr "Číst"
 
@@ -1549,7 +1588,7 @@ msgstr "Tabulka"
 #: src/components/routes/system/info-bar.tsx
 msgctxt "Tabs system layout option"
 msgid "Tabs"
-msgstr ""
+msgstr "Karty"
 
 #: src/components/systemd-table/systemd-table.tsx
 msgid "Tasks"
@@ -1602,7 +1641,7 @@ msgstr "Tuto akci nelze vzít zpět. Tím se z databáze trvale odstraní všech
 msgid "This will permanently delete all selected records from the database."
 msgstr "Tímto trvale odstraníte všechny vybrané záznamy z databáze."
 
-#: src/components/routes/system/charts/extra-fs-charts.tsx
+#: src/components/routes/system/charts/disk-charts.tsx
 msgid "Throughput of {extraFsName}"
 msgstr "Propustnost {extraFsName}"
 
@@ -1655,6 +1694,11 @@ msgstr "Celkový přijatý objem dat pro každé rozhraní"
 msgid "Total data sent for each interface"
 msgstr "Celkový odeslaný objem dat pro každé rozhraní"
 
+#: src/components/routes/system/disk-io-sheet.tsx
+msgctxt "Disk I/O"
+msgid "Total time spent on read/write (can exceed 100%)"
+msgstr ""
+
 #. placeholder {0}: data.length
 #: src/components/systemd-table/systemd-table.tsx
 msgid "Total: {0}"
@@ -1775,7 +1819,7 @@ msgstr "Odeslání"
 msgid "Uptime"
 msgstr "Doba provozu"
 
-#: src/components/routes/system/charts/extra-fs-charts.tsx
+#: src/components/routes/system/charts/disk-charts.tsx
 #: src/components/routes/system/charts/gpu-charts.tsx
 #: src/components/routes/system/charts/gpu-charts.tsx
 #: src/components/routes/system/charts/gpu-charts.tsx
@@ -1797,6 +1841,11 @@ msgstr "Využito"
 msgid "Users"
 msgstr "Uživatelé"
 
+#: src/components/routes/system/charts/disk-charts.tsx
+msgctxt "Disk I/O utilization"
+msgid "Utilization"
+msgstr "Využití"
+
 #: src/components/alerts-history-columns.tsx
 msgid "Value"
 msgstr "Hodnota"
@@ -1806,6 +1855,7 @@ msgid "View"
 msgstr "Zobrazení"
 
 #: src/components/routes/system/cpu-sheet.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
 #: src/components/routes/system/network-sheet.tsx
 msgid "View more"
 msgstr "Zobrazit více"
@@ -1858,7 +1908,9 @@ msgstr "Windows příkaz"
 
 #. Disk write
 #: src/components/routes/system/charts/disk-charts.tsx
-#: src/components/routes/system/charts/extra-fs-charts.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
+#: src/components/routes/system/disk-io-sheet.tsx
 msgid "Write"
 msgstr "Psát"