diff --git a/PepDev32/pepinstaller/preseed/preseed.cfg b/PepDev32/pepinstaller/preseed/preseed.cfg
index 091777e..508bd41 100644
--- a/PepDev32/pepinstaller/preseed/preseed.cfg
+++ b/PepDev32/pepinstaller/preseed/preseed.cfg
@@ -2,9 +2,7 @@
 #
 # SPDX-FileCopyrightText:  2023 PeppermintOS Team  (peppermintosteam@proton.me)
 
-# This preseed file includes configuration settings for a custom repository, 
-# as well as enabling the "contrib" and "non-free" components. Additionally, 
-# automatic responses to the Debian popularity contest are disabled
+#This preseed file includes configuration settings for a custom repository with the 'contrib' and 'non-free' components #enabled, as well as disabling the automatic response to the Debian popularity contest. In addition, it configures #various options for the Grub bootloader, including the timeout, command line parameters, and splash screen settings #etc
 
 # Add your custom repositories
 d-i apt-setup/local0/repository string \
@@ -23,8 +21,21 @@ d-i apt-setup/non-free-firmware boolean true
 # Select which update services to use; define the mirrors to be used.
 # Values shown below are the normal defaults.
 #d-i apt-setup/services-select multiselect security, updates
-#d-i apt-setup/security_host string security.debian.org
+#d-i apt-setup/security_host string deb.devuan.org/merged 
 
 # Remove popularity-contest
 popularity-contest popularity-contest/participate boolean false
 
+# This command is run just before the install finishes, but when there is
+# still a usable /target directory. You can chroot to /target and use it
+# directly, or use the apt-install and in-target commands to easily install
+# packages and run commands in the target system.
+d-i preseed/late_command string \
+echo "Editing default grub file"; \
+echo "GRUB_TIMEOUT=5" >> /target/etc/default/grub; \
+echo "GRUB_DISTRIBUTOR="Peppermint"" >> /target/etc/default/grub; \
+echo "GRUB_DISABLE_OS_PROBER=false" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX=\"\"" >> /target/etc/default/grub; \
+chroot /target /usr/sbin/update-grub; \
+
diff --git a/PepDev64/pepinstaller/preseed/preseed.cfg b/PepDev64/pepinstaller/preseed/preseed.cfg
index 091777e..508bd41 100644
--- a/PepDev64/pepinstaller/preseed/preseed.cfg
+++ b/PepDev64/pepinstaller/preseed/preseed.cfg
@@ -2,9 +2,7 @@
 #
 # SPDX-FileCopyrightText:  2023 PeppermintOS Team  (peppermintosteam@proton.me)
 
-# This preseed file includes configuration settings for a custom repository, 
-# as well as enabling the "contrib" and "non-free" components. Additionally, 
-# automatic responses to the Debian popularity contest are disabled
+#This preseed file includes configuration settings for a custom repository with the 'contrib' and 'non-free' components #enabled, as well as disabling the automatic response to the Debian popularity contest. In addition, it configures #various options for the Grub bootloader, including the timeout, command line parameters, and splash screen settings #etc
 
 # Add your custom repositories
 d-i apt-setup/local0/repository string \
@@ -23,8 +21,21 @@ d-i apt-setup/non-free-firmware boolean true
 # Select which update services to use; define the mirrors to be used.
 # Values shown below are the normal defaults.
 #d-i apt-setup/services-select multiselect security, updates
-#d-i apt-setup/security_host string security.debian.org
+#d-i apt-setup/security_host string deb.devuan.org/merged 
 
 # Remove popularity-contest
 popularity-contest popularity-contest/participate boolean false
 
+# This command is run just before the install finishes, but when there is
+# still a usable /target directory. You can chroot to /target and use it
+# directly, or use the apt-install and in-target commands to easily install
+# packages and run commands in the target system.
+d-i preseed/late_command string \
+echo "Editing default grub file"; \
+echo "GRUB_TIMEOUT=5" >> /target/etc/default/grub; \
+echo "GRUB_DISTRIBUTOR="Peppermint"" >> /target/etc/default/grub; \
+echo "GRUB_DISABLE_OS_PROBER=false" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX=\"\"" >> /target/etc/default/grub; \
+chroot /target /usr/sbin/update-grub; \
+
diff --git a/PepDev_arm64/pepinstaller/preseed/preseed.cfg b/PepDev_arm64/pepinstaller/preseed/preseed.cfg
index 091777e..508bd41 100644
--- a/PepDev_arm64/pepinstaller/preseed/preseed.cfg
+++ b/PepDev_arm64/pepinstaller/preseed/preseed.cfg
@@ -2,9 +2,7 @@
 #
 # SPDX-FileCopyrightText:  2023 PeppermintOS Team  (peppermintosteam@proton.me)
 
-# This preseed file includes configuration settings for a custom repository, 
-# as well as enabling the "contrib" and "non-free" components. Additionally, 
-# automatic responses to the Debian popularity contest are disabled
+#This preseed file includes configuration settings for a custom repository with the 'contrib' and 'non-free' components #enabled, as well as disabling the automatic response to the Debian popularity contest. In addition, it configures #various options for the Grub bootloader, including the timeout, command line parameters, and splash screen settings #etc
 
 # Add your custom repositories
 d-i apt-setup/local0/repository string \
@@ -23,8 +21,21 @@ d-i apt-setup/non-free-firmware boolean true
 # Select which update services to use; define the mirrors to be used.
 # Values shown below are the normal defaults.
 #d-i apt-setup/services-select multiselect security, updates
-#d-i apt-setup/security_host string security.debian.org
+#d-i apt-setup/security_host string deb.devuan.org/merged 
 
 # Remove popularity-contest
 popularity-contest popularity-contest/participate boolean false
 
+# This command is run just before the install finishes, but when there is
+# still a usable /target directory. You can chroot to /target and use it
+# directly, or use the apt-install and in-target commands to easily install
+# packages and run commands in the target system.
+d-i preseed/late_command string \
+echo "Editing default grub file"; \
+echo "GRUB_TIMEOUT=5" >> /target/etc/default/grub; \
+echo "GRUB_DISTRIBUTOR="Peppermint"" >> /target/etc/default/grub; \
+echo "GRUB_DISABLE_OS_PROBER=false" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX=\"\"" >> /target/etc/default/grub; \
+chroot /target /usr/sbin/update-grub; \
+
diff --git a/pepinstaller/preseed/preseed.cfg b/pepinstaller/preseed/preseed.cfg
index 0e8d464..31ecb87 100644
--- a/pepinstaller/preseed/preseed.cfg
+++ b/pepinstaller/preseed/preseed.cfg
@@ -2,9 +2,7 @@
 #
 # SPDX-FileCopyrightText:  2023 PeppermintOS Team  (peppermintosteam@proton.me)
 
-# This preseed file includes configuration settings for a custom repository, 
-# as well as enabling the "contrib" and "non-free" components. Additionally, 
-# automatic responses to the Debian popularity contest are disabled
+#This preseed file includes configuration settings for a custom repository with the 'contrib' and 'non-free' components #enabled, as well as disabling the automatic response to the Debian popularity contest. In addition, it configures #various options for the Grub bootloader, including the timeout, command line parameters, and splash screen settings #etc. 
 
 # Add your custom repositories
 d-i apt-setup/local0/repository string \
@@ -27,3 +25,16 @@ d-i apt-setup/security_host string security.debian.org
 # Remove popularity-contest
 popularity-contest popularity-contest/participate boolean false
 
+# This command is run just before the install finishes, but when there is
+# still a usable /target directory. You can chroot to /target and use it
+# directly, or use the apt-install and in-target commands to easily install
+# packages and run commands in the target system.
+d-i preseed/late_command string \
+echo "Editing default grub file"; \
+echo "GRUB_TIMEOUT=5" >> /target/etc/default/grub; \
+echo "GRUB_DISTRIBUTOR="Peppermint"" >> /target/etc/default/grub; \
+echo "GRUB_DISABLE_OS_PROBER=false" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"" >> /target/etc/default/grub; \
+echo "GRUB_CMDLINE_LINUX=\"\"" >> /target/etc/default/grub; \
+chroot /target /usr/sbin/update-grub; \
+