diff --git a/containers/libreportal/frontend/core/setup/css/setup-wizard.css b/containers/libreportal/frontend/core/setup/css/setup-wizard.css
index 3c82c30..447d8b8 100755
--- a/containers/libreportal/frontend/core/setup/css/setup-wizard.css
+++ b/containers/libreportal/frontend/core/setup/css/setup-wizard.css
@@ -1391,3 +1391,32 @@ body.setup-wizard-open .eo-modal { z-index: 10000; }
    other dropdowns rather than showing stock white chrome. */
 .setup-storage-default select,
 .setup-storage-default .custom-select { flex: 1; min-width: 180px; }
+
+/* Two choices above the drive list. The list below is reference, not input. */
+.setup-storage-choice {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 10px;
+}
+.setup-storage-choice-label {
+  flex: 0 0 120px;
+  font-size: 0.92em;
+  opacity: 0.92;
+}
+.setup-storage-choice select,
+.setup-storage-choice .custom-select { flex: 1; min-width: 180px; }
+.setup-storage-choice-msg {
+  margin: 2px 0 4px;
+  padding: 9px 11px;
+  border-radius: 8px;
+  border: 1px solid rgba(255, 190, 60, 0.32);
+  background: rgba(255, 190, 60, 0.09);
+  font-size: 0.86em;
+  line-height: 1.5;
+}
+.setup-storage-choice-msg code {
+  display: inline-block;
+  margin-top: 4px;
+  word-break: break-all;
+}
diff --git a/containers/libreportal/frontend/core/setup/js/setup-wizard.js b/containers/libreportal/frontend/core/setup/js/setup-wizard.js
index bbc84af..4c72abc 100755
--- a/containers/libreportal/frontend/core/setup/js/setup-wizard.js
+++ b/containers/libreportal/frontend/core/setup/js/setup-wizard.js
@@ -34,6 +34,8 @@ class SetupWizard {
     this.fstabWanted = [];
     // Which drive new apps default to: 'primary' or a ticked drive's path.
     this.storageDefault = 'primary';
+    // Where LibrePortal's own tree should live (root-only to change post-install).
+    this.storageSystemChoice = 'primary';
     this.installLevel = 'beginner';
     this.totalSteps = this._effectiveTotalSteps();
     this.domainCount = 0; // tracked dynamically as the user adds rows
@@ -238,8 +240,9 @@ class SetupWizard {
                 <div class="setup-section-title">Storage
                   <span class="setup-tooltip" tabindex="0" data-tip="Apps normally live on the system disk. If you have another drive, you can register it here and choose per app where its data goes.">?</span>
                 </div>
+                <div id="sw-storage-choices"></div>
+                <div class="setup-storage-divider" id="sw-storage-drives-head" style="display:none;"><span>Drives</span></div>
                 <div id="sw-storage-list"></div>
-                <div id="sw-storage-default" class="setup-storage-default" style="display:none;"></div>
                 <p class="setup-section-hint" id="sw-storage-note" style="margin-top:10px;"></p>
               </div>
             </section>
@@ -476,39 +479,27 @@ class SetupWizard {
               title="${used}% used, ${100 - used}% free"><span style="width:${width}%"></span></span>`;
   }
 
-  // One card, one line.
+  // One card, one line — informational.
+  //
+  // No checkbox: the dropdowns above ARE the selection, and a drive picked
+  // there is registered automatically. Two ways to say the same thing (tick it
+  // AND choose it) is how you end up with a ticked drive nobody selected.
   //
   // The badge carries severity and Details carries the explanation, so the card
-  // itself stays a single row — listing every warning here pushed each drive to
-  // three lines and made the step tall for no gain.
-  //
-  // `locked` renders it ticked and non-interactive: the system drive is what
-  // apps fall back to, so it cannot be deselected. Details still works, which
-  // is the point of showing it at all on a single-disk box.
+  // stays a single row.
   _storageCard(c, key, opts) {
     const o = opts || {};
     const refused = c.verdict === 'refuse';
-    const badge = o.locked
-      ? '<span class="setup-storage-badge setup-storage-badge-ok">default</span>'
+    const badge = o.system
+      ? '<span class="setup-storage-badge setup-storage-badge-ok">system</span>'
       : (refused ? '<span class="setup-storage-badge setup-storage-badge-bad">can\u2019t be used</span>'
                  : (c.verdict === 'warn' ? '<span class="setup-storage-badge setup-storage-badge-warn">needs care</span>' : ''));
 
-    const title = o.locked ? 'System disk' : c.path;
-
-    // The system disk carries NO checkbox — not even a disabled one. Apps fall
-    // back to it whatever happens, so it is not a choice, and a control that
-    // can never change state reads as "locked option" rather than "this is
-    // simply where things go". It is a <div> for the same reason: a <label>
-    // with nothing to label is wrong. A spacer keeps the text aligned with the
-    // real checkboxes below it.
-    const control = o.locked
-      ? '<span class="setup-storage-spacer" aria-hidden="true"></span>'
-      : `<input type="checkbox" data-storage-path="${this.escapeHtml(c.path)}" ${refused ? 'disabled' : ''}>`;
-    const tag = o.locked ? 'div' : 'label';
+    const title = o.system ? 'System disk' : c.path;
 
     return `
-      <${tag} class="setup-app setup-storage-card${refused ? ' setup-storage-disabled' : ''}${o.locked ? ' setup-storage-locked' : ''}">
-        ${control}
+      <div class="setup-app setup-storage-card${refused ? ' setup-storage-disabled' : ''} setup-storage-locked">
+        <span class="setup-storage-spacer" aria-hidden="true"></span>
         <span class="setup-app-body">
           <span class="setup-app-name">${this.escapeHtml(title)} ${badge}</span>
           <span class="setup-app-desc">
@@ -517,25 +508,31 @@ class SetupWizard {
           </span>
         </span>
         <button type="button" class="setup-storage-details" data-storage-details="${this.escapeHtml(key)}">Details</button>
-      </${tag}>`;
+      </div>`;
+  }
+
+  // Every place a root could go: the system disk, plus each usable candidate.
+  _storageChoices() {
+    const opts = [{ value: 'primary', label: 'System disk' }];
+    this.storageCandidates
+      .filter(c => c.verdict !== 'refuse')
+      .forEach(c => opts.push({ value: c.path, label: c.path }));
+    return opts;
   }
 
   renderStorage() {
     const list = this.container.querySelector('#sw-storage-list');
+    const head = this.container.querySelector('#sw-storage-drives-head');
     const note = this.container.querySelector('#sw-storage-note');
     if (!list) return;
 
     let html = '';
     if (this.storageSystem) {
-      html += this._storageCard(this.storageSystem, 'system', { locked: true });
-    }
-    // Separate the fixed fact from the actual choice: above the divider is
-    // where apps go regardless, below it is what you can opt into.
-    if (this.storageCandidates.length) {
-      html += '<div class="setup-storage-divider"><span>Additional drives</span></div>';
+      html += this._storageCard(this.storageSystem, 'system', { system: true });
     }
     html += this.storageCandidates.map((c, i) => this._storageCard(c, String(i), {})).join('');
     list.innerHTML = html;
+    if (head) head.style.display = this.storageCandidates.length ? '' : 'none';
 
     list.querySelectorAll('[data-storage-details]').forEach((btn) => {
       btn.addEventListener('click', (e) => {
@@ -545,61 +542,79 @@ class SetupWizard {
       });
     });
 
-    // Ticking a drive changes whether "where do new apps go?" is a real
-    // question, so re-evaluate it on every change.
-    list.querySelectorAll('[data-storage-path]').forEach((cb) => {
-      cb.addEventListener('change', () => this.renderStorageDefault());
-    });
-    this.renderStorageDefault();
+    this.renderStorageChoices();
 
     if (note) {
-      // Only the single-disk case says anything: with drives listed, the cards
-      // and their badges already carry it, and a standing explanatory line
-      // under them was noise.
       note.innerHTML = this.storageCandidates.length
         ? ''
-        : 'No other drives found. You can add one later with <code>libreportal storage</code>.';
+        : 'Only one drive found, so everything goes here. Add another later with <code>libreportal storage</code>.';
     }
   }
 
-  // "Where do new apps go?" — asked only when it is actually a question, i.e.
-  // once at least one extra drive is ticked. With nothing ticked there is one
-  // possible answer and a control would be furniture.
-  //
-  // This sets a DEFAULT, not a per-app placement: apps ship
-  // CFG_<APP>_STORAGE=default, which means "follow the global setting", so one
-  // choice here places every app installed afterwards. Individual apps can
-  // still be pinned, and moved later with `libreportal app move`.
-  renderStorageDefault() {
-    const box = this.container.querySelector('#sw-storage-default');
+  // The two choices, above the drive list. Rendered only when there is another
+  // drive — with one disk both answers are forced and a pair of dropdowns
+  // showing the same single option is furniture.
+  renderStorageChoices() {
+    const box = this.container.querySelector('#sw-storage-choices');
     if (!box) return;
 
-    const ticked = this.collectStorage();
-    if (!ticked.length) {
-      box.style.display = 'none';
+    const opts = this._storageChoices();
+    if (opts.length < 2) {
       box.innerHTML = '';
       this.storageDefault = 'primary';
+    // Where LibrePortal's own tree should live (root-only to change post-install).
+    this.storageSystemChoice = 'primary';
+      this.storageSystemChoice = 'primary';
       return;
     }
 
-    // Keep a previous choice if that drive is still ticked.
-    if (this.storageDefault !== 'primary' && !ticked.includes(this.storageDefault)) {
-      this.storageDefault = 'primary';
-    }
+    const row = (id, label, tip, value) => `
+      <div class="setup-storage-choice">
+        <span class="setup-storage-choice-label">${label}
+          <span class="setup-tooltip" tabindex="0" data-tip="${this.escapeHtml(tip)}">?</span>
+        </span>
+        <select id="${id}" class="form-control">
+          ${opts.map(o => `<option value="${this.escapeHtml(o.value)}"${o.value === value ? ' selected' : ''}>${this.escapeHtml(o.label)}</option>`).join('')}
+        </select>
+      </div>`;
 
-    const opts = [{ value: 'primary', label: 'System disk' }]
-      .concat(ticked.map(p => ({ value: p, label: p })));
+    box.innerHTML =
+      row('sw-storage-system', 'LibrePortal',
+          'Settings, database and logs. Around 20 MB, and it stays small. Moving this after install needs a root command — the wizard will tell you which.',
+          this.storageSystemChoice) +
+      row('sw-storage-apps', 'New apps',
+          'Where an app keeps its data unless you place that app somewhere else. You can move any app later with `libreportal app move`.',
+          this.storageDefault) +
+      '<div class="setup-storage-choice-msg" id="sw-storage-system-msg" style="display:none;"></div>';
 
-    box.style.display = '';
-    box.innerHTML = `
-      <span class="setup-storage-default-label">New apps store their data on</span>
-      <select id="sw-storage-default-select" class="form-control">
-        ${opts.map(o => `<option value="${this.escapeHtml(o.value)}"${o.value === this.storageDefault ? ' selected' : ''}>${this.escapeHtml(o.label)}</option>`).join('')}
-      </select>`;
-
-    box.querySelector('select').addEventListener('change', (e) => {
+    box.querySelector('#sw-storage-system').addEventListener('change', (e) => {
+      this.storageSystemChoice = e.target.value;
+      this.renderStorageSystemMsg();
+    });
+    box.querySelector('#sw-storage-apps').addEventListener('change', (e) => {
       this.storageDefault = e.target.value;
     });
+    this.renderStorageSystemMsg();
+  }
+
+  // Moving LibrePortal's own tree re-bakes the root-owned helpers, the systemd
+  // unit and the WebUI's own bind-mounts. That is real root, not the scoped
+  // sudo the manager holds — a helper that re-baked the other helpers from a
+  // manager-supplied path would hand the manager the trust boundary those
+  // helpers exist to defend. So the wizard hands over the command instead of
+  // pretending it can do it.
+  renderStorageSystemMsg() {
+    const msg = this.container.querySelector('#sw-storage-system-msg');
+    if (!msg) return;
+    if (!this.storageSystemChoice || this.storageSystemChoice === 'primary') {
+      msg.style.display = 'none';
+      msg.innerHTML = '';
+      return;
+    }
+    msg.style.display = '';
+    msg.innerHTML = `Moving LibrePortal itself needs root, so it happens outside the WebUI.
+      Finish setup, then run:<br>
+      <code>sudo libreportal-relocate --system-dir=${this.escapeHtml(this.storageSystemChoice)}/libreportal-system</code>`;
   }
 
   // Details modal — the technical spec, every check with its full explanation,
@@ -706,9 +721,14 @@ class SetupWizard {
     ));
   }
 
+  // Drives to register: whatever either dropdown points at. Selecting a drive
+  // IS the request to register it — there is no separate tick to forget.
   collectStorage() {
-    return Array.from(this.container.querySelectorAll('input[data-storage-path]:checked'))
-      .map(cb => cb.dataset.storagePath);
+    const out = [];
+    [this.storageSystemChoice, this.storageDefault].forEach((v) => {
+      if (v && v !== 'primary' && !out.includes(v)) out.push(v);
+    });
+    return out;
   }
 
   showStep(n) {
@@ -1116,7 +1136,10 @@ class SetupWizard {
       // Only for drives that are actually being registered.
       storage_fstab: this.fstabWanted.filter(p => this.collectStorage().includes(p)),
       // 'primary', or the path of a drive also present in `storage`.
-      storage_default: (this.storageDefault !== 'primary' && this.collectStorage().includes(this.storageDefault)) ? this.storageDefault : 'primary'
+      storage_default: (this.storageDefault && this.storageDefault !== 'primary') ? this.storageDefault : 'primary',
+      // Recorded so the finished-setup screen can repeat the relocate command.
+      // Nothing acts on it: moving LibrePortal's own tree needs real root.
+      storage_system: (this.storageSystemChoice && this.storageSystemChoice !== 'primary') ? this.storageSystemChoice : 'primary'
     };
 
     // Apply the experience choice to the WebUI immediately so the next
diff --git a/docs/guide/install-and-use.md b/docs/guide/install-and-use.md
index e1292f6..c6ef8e0 100644
--- a/docs/guide/install-and-use.md
+++ b/docs/guide/install-and-use.md
@@ -35,7 +35,7 @@ Where should LibrePortal keep things?
   1)  This disk (default)      911.9G   808.4G free
   2)  /mnt/bigdisk             3.6T     3.6T free
 
-LibrePortal itself — settings, database, logs. Around 20 MB, and it stays small.
+LibrePortal — settings, database, logs. Around 20 MB, and it stays small.
 Choose [1]:
 
 App data — everything your apps store. This is the one that grows.
diff --git a/init.sh b/init.sh
index 4689a47..fed27f3 100755
--- a/init.sh
+++ b/init.sh
@@ -286,7 +286,7 @@ initPickRoots()
 
     local chosen
     if [[ -z "${LP_SYSTEM_DIR_EXPLICIT:-}" ]]; then
-        chosen=$(_initAskDisk "LibrePortal itself — settings, database, logs. Around 20 MB, and it stays small.")
+        chosen=$(_initAskDisk "LibrePortal — settings, database, logs. Around 20 MB, and it stays small.")
         if [[ -n "$chosen" ]]; then
             LP_SYSTEM_DIR="${chosen%/}/libreportal-system"
             isSuccessful "LibrePortal will live in $LP_SYSTEM_DIR"