1 files changed, 9 insertions, 0 deletions
diff --git a/cgpt/cgpt_boot.c b/cgpt/cgpt_boot.c
index 386c4f4d..993e8654 100644
--- a/cgpt/cgpt_boot.c
+++ b/cgpt/cgpt_boot.c
@@ -78,6 +78,15 @@ int CgptBoot(CgptBootParams *params) {
     return CGPT_FAILED;
   }
 
+  if (drive.is_mtd) {
+    /* This command manipulates the legacy MBR sector present at the beginning
+     * of the GPT structures, and so doesn't apply to MTD drives.
+     */
+    Error("'boot' command unsupported in MTD mode\n");
+    retval = CGPT_FAILED;
+    goto done;
+  }
+
   if (CGPT_OK != ReadPMBR(&drive)) {
     Error("Unable to read PMBR\n");
     goto done;