diff --git a/installer/ogboot_installer.py b/installer/ogboot_installer.py
index be35769..73966c5 100755
--- a/installer/ogboot_installer.py
+++ b/installer/ogboot_installer.py
@@ -93,13 +93,6 @@ def check_distribution():
 ###:::::::::::::::::::::::::::::: INSTALL ::::::::::::::::::::::::::::::::::###
 ###############################################################################
 
-def is_installed(package):
-	try:
-		subprocess.run(["dpkg", "-s", package], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-		return True
-	except subprocess.CalledProcessError:
-		return False
-
 def get_missing_packages():
 	global PACKAGES_TO_INSTALL
 	faltantes = []
@@ -120,30 +113,32 @@ def get_missing_packages():
 					PACKAGES_TO_INSTALL = ["nfs-common", "xorriso", "genisoimage", "syslinux", "liblzma-dev", "nginx", "arp-scan", "automake", "build-essential", "btrfs-progs", "composer", "curl", "ctorrent", "debootstrap", "g++-multilib", "gawk", "gettext", "graphviz", "grub-efi-amd64-signed", "jq", "libdbi-dev", "libdbi1", "libev-dev", "libjansson-dev", "liblz4-tool", "libssl-dev", "moreutils", "netpipes", "php8.3", "php8.3-bcmath", "php8.3-cli", "php8.3-curl", "php8.3-fpm", "php8.3-gd", "php8.3-ldap", "php8.3-mbstring", "php8.3-mysql", "php8.3-common", "php-pear", "php8.3-xml", "php8.3-zip", "procps", "coreutils", "rsync", "samba", "samba-common-bin", "schroot", "shim-signed", "squashfs-tools", "subversion", "tftpd-hpa", "udpcast", "unzip", "wakeonlan", "wget", "xinetd", "jq", "moreutils", "isolinux", "syslinux", "file"]
 				case _:
 					PACKAGES_TO_INSTALL = ["bash", "rsync"]
-		case "suse":
-			match OSVERSION:
-				case "15":
-					PACKAGES_TO_INSTALL = ["zypper", "mc", "gcc"]
-				case "12":
-					PACKAGES_TO_INSTALL = ["perl", "tar", "man"]
-				case _:
-					PACKAGES_TO_INSTALL = ["openssl", "ncurses", "zip"]
-		case "redhat":
-			match OSVERSION:
-				case "8":
-					PACKAGES_TO_INSTALL = ["yum", "tar", "perl"]
-				case "7":
-					PACKAGES_TO_INSTALL = ["bash", "rpm", "tcpdump"]
-				case _:
-					PACKAGES_TO_INSTALL = ["grep", "sed", "awk"]
+		#case "suse":
+		#	match OSVERSION:
+		#		case "15":
+		#			PACKAGES_TO_INSTALL = ["zypper", "mc", "gcc"]
+		#		case "12":
+		#			PACKAGES_TO_INSTALL = ["perl", "tar", "man"]
+		#		case _:
+		#			PACKAGES_TO_INSTALL = ["openssl", "ncurses", "zip"]
+		#case "redhat":
+		#	match OSVERSION:
+		#		case "8":
+		#			PACKAGES_TO_INSTALL = ["yum", "tar", "perl"]
+		#		case "7":
+		#			PACKAGES_TO_INSTALL = ["bash", "rpm", "tcpdump"]
+		#		case _:
+		#			PACKAGES_TO_INSTALL = ["grep", "sed", "awk"]
 		case _:
 			logger.error("Distribution not supported by ogBoot.")
 			exit(1)
 
-	for package in PACKAGES_TO_INSTALL:
-		if not is_installed(package):
-			faltantes.append(package)
-			logger.info(f"Package to install: {package}...")
+	installed = []
+	for l in subprocess.run (['dpkg', '-s'] + PACKAGES_TO_INSTALL, capture_output=True, text=True).stdout.splitlines():
+		if l.startswith ('Package:'):
+			installed.append (l.split (':')[1].strip())
+	faltantes = list (set(PACKAGES_TO_INSTALL) - set(installed))
+	logger.info(f"Packages to install: {faltantes}")
 	return faltantes
 
 def install_packages(log_packages_file="/tmp/installed_packages.log"):