From fe369531eaef77e99b433cc3d581c935df5cbb87 Mon Sep 17 00:00:00 2001
From: oxmc <67136658+oxmc@users.noreply.github.com>
Date: Tue, 9 Jun 2026 23:27:09 -0700
Subject: [PATCH] wrimg: fix misc zero by specifying exact count via blockdev

---
 wrimg.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wrimg.sh b/wrimg.sh
index 32aa4dd..5c56fb3 100755
--- a/wrimg.sh
+++ b/wrimg.sh
@@ -131,7 +131,7 @@ grow_userdata() {
 wipe_userdata() {
   echo "Zeroing misc..."
   sudo umount $(part_dev 4) 2>/dev/null || true
-  sudo dd if=/dev/zero of=$(part_dev 4) bs=1M
+  sudo dd if=/dev/zero of=$(part_dev 4) bs=1M count=$(( $(sudo blockdev --getsize64 $(part_dev 4)) / 1048576 ))
 
   echo "Creating metadata..."
   sudo umount $(part_dev 8) 2>/dev/null || true