FOS not mounting drive for post download scripts.

rodluz

Hello, I am having an issue when deploying one of my images. After Partclone is done, my post download scripts start, however it seems that the $part variable is not set correctly so the /ntfs directory only has Recovery and System Volume Information and is not mounting my ntfs partition.

I haven’t changed anything of the mounting part from fog.postdownload.

dots "Running post download scripts."

mkdir /ntfs &>/dev/null
ntfs-3g -o force,rw $part /ntfs

echo "Mounting Device";

if [ "$?" = 0 ]; then
        echo "Done"
        debugPause
        . ${postdownpath}getMachineModel
...
...

I’m pretty sure it’s something with the specific image I am using, since I tried a different image and I don’t have that problem. I don’t know how my new image could be affecting this, but I didn’t do anything different for the “bad” image.

I’m not sure what I should try to figure out what the issue is.
I was able to mount the /dev/sda3 partition manually using ntfs-3g -o force,rw /dev/sda3 /ntfs

rodluz

I did a few more tests and realized that the $part variable is also not set on the image that is working, so probably not that. The other thing I realized, my working image has the NTFS partition on /dev/sda4 but the “bad” image has it on /dev/sda3. Not sure why the new image is different.

A bit more context, in case it could be the issue:

The “good” image is Windows 10 Version 1909
The “bad” image is Windows 10 Version 20H2

george1421

@rodluz From either a windows computer or debug mode on FOS Linux, can you show the partition layout differences between these two different OS’.

The code for the postdownload script might need to be revised as Microsoft revises the layout of the disk structure.

If in FOS Linux (FOG Debug mode) we would need this information
lsblk
fdisk -l

And just for clarity you are using this tutorial for your postinstall scripts? https://forums.fogproject.org/topic/11126/using-fog-postinstall-scripts-for-windows-driver-injection-2017-ed

Sebastian Roth

@rodluz said in FOS not mounting drive for post download scripts.:

The “good” image is Windows 10 Version 1909
The “bad” image is Windows 10 Version 20H2

This is a known change Microsoft did. They added another partition at the end of the disk. Think it’s a recovery partition they added but I am not sure from the top of my head.

rodluz

@george1421 @Sebastian-Roth So I modified my postdownload scripts to manually mount the correct drive if the code that was originally there didn’t do it. It is working for me so I am adding my post download scripts below in case anyone comes across this thread and finds it helpful for them. This works for me in my environment, but may not work for everyone.

I took inspiration from the getHardDisk() function in https://github.com/FOGProject/fos/blob/master/Buildroot/board/FOG/FOS/rootfs_overlay/usr/share/fog/lib/funcs.sh

The scripts are a bit of a mess but working

fog.postdownload

#!/bin/bash
## This file serves as a starting point to call your custom postimaging scripts.
## <SCRIPTNAME> should be changed to the script you're planning to use.
## Syntax of post download scripts are
#. ${postdownpath}<SCRIPTNAME>

clearScreen;

dots "Running post download scripts."

mkdir /ntfs &>/dev/null
ntfs-3g -o force,rw $part /ntfs

echo "Mounting Device";

if [ "$?" = 0 ]; then
        if [ ! -d "/ntfs/Windows" ]; then
                . ${postdownpath}mountLargestPartition
        fi

        echo "Done"
        debugPause

        . ${postdownpath}getMachineModel
        . ${postdownpath}getPlatformVersion
        . ${postdownpath}fog.drivers
        . ${postdownpath}fog.unattend

        if [ -z "$auditMode" ]; then
                . ${postdownpath}fog.bcu
        fi

        echo "Unmounting Device";
        umount /ntfs;
        debugPause
else
        echo "Failed to mount device";
        sleep 30;
        debugPause
fi

mountLargestPartition

#!/bin/bash

dots "Running the manual mount script"

drive=$(lsblk -dpno KNAME -I 3,8,9,179,202,253,259 | uniq | sort -V)
driveCleaned=${drive//'/dev/'/} #Remove `/dev/` from variable

partition=""
partSize=0

# Get the largest partition
while IFS= read -r line; do
        tempPartSize=$(blockdev --getsize64 /dev/$line)

        if [ $tempPartSize -gt $partSize ]; then
                partSize=$tempPartSize
                partition="/dev/$line"
        fi
done < <(ls /dev | grep -E "${driveCleaned}[a-zA-Z0-9]+")

umount /ntfs &> /dev/null
ntfs-3g -o force,rw $partition /ntfs

getMachineModel

#!/bin/bash

dots "Retrieving Machine Model"

machine=$(dmidecode -s system-product-name) # Gets machine model
machine="${machine// /_}"  # Replace spaces with underscores

echo "${machine}"
debugPause

getPlatformVersion

#!/bin/bash

dots "Retrieving Platform Version from Registry"

# Create a registry file to be able to search the ReleaseId from
# reged -x gives out an abort error message but from all my testing it still works.
reged -x /ntfs/Windows/System32/config/SOFTWARE HKEY_LOCAL_MACHINE\\SOFTWARE \\ /out.reg &> /dev/null || true

if [ -f /out.reg ]
then
        PlatformVersion=$(cat /out.reg | grep 'ReleaseId')
        PlatformVersion=${PlatformVersion:13:4} # Grab only actual the ReleaseId. Full text looks like "ReleaseId"="1909"
        echo "${PlatformVersion}"
else
        echo "No registry file found."
        debugPause

        dots "Retrieving Platform Version from PlatformVersion.rek file"

        if [ -f "/ntfs/Windows/PlatformVersion.rek" ]
        then
                PlatformVersion=$(<"/ntfs/Windows/PlatformVersion.rek")
                echo "${PlatformVersion}"
                debugPause
        else
                echo "No platform version file found."
                debugPause
        fi
fi

fog.drivers

#!/bin/bash

dots "Preparing Drivers"

mkdir /ntfs/Drivers &>/dev/null;
echo "In Progress"

dots "Adding drivers to driver path"
cp -ar "/images/drivers/${machine}/${PlatformVersion}/" /ntfs/Drivers

if [ "$?" = 0 ]; then
        echo "Done"
else
        echo "Failed!"
fi

debugPause

regfile="/ntfs/Windows/System32/config/SOFTWARE"
echo "regfile ${regfile}"

key="\Microsoft\Windows\CurrentVersion\DevicePath"
echo "key ${key}"

devpath="%SystemRoot%\inf;%SystemDrive%\Drivers"
echo "devpath ${devpath}"

reged -e “$regfile” &>/dev/null <<EOFREG
ed $key
$devpath
q
y
EOFREG

echo “Drivers done.”

fog.unattend

#!/bin/bash

dots "Searching for Platform Version"

# If $PlatformVersion is not null/empty
if [ -n "$PlatformVersion" ]; then
        echo "Found"
        debugPause

        dots "Removing old unattend file"
        rm -f /ntfs/Windows/Panther/*nattend.xml
        if [ "$?" = 0 ]; then
                echo "Done"
        else
                echo "Failed to remove file!"
                echo "Aborting fog.unattend"
                debugPause
                sleep 60
                return
        fi
        debugPause


        dots "Checking image mode"
        if [ -n "$auditMode" ] && [ "$auditMode" -eq 1 ]; then
                echo "AUDIT"
                debugPause

                dots "Copying audit mode unattend file"
                cp "/images/unattends/UnattendAuditMode.xml" "/ntfs/Windows/Panther/Unattend.xml"
                if [ "$?" = 0 ]; then
                        echo "Done"
                else
                        echo "Failed!"
                fi
                debugPause
        else
                echo "OOBE"
                debugPause

                dots "Copying unattend file with driver path"
                cp "/images/unattends/UnattendWithDriverPath.xml" "/ntfs/Windows/Panther/Unattend.xml"
                if [ "$?" = 0 ]; then
                        echo "Done"
                else
                        echo "Failed!"
                fi
                debugPause
        fi
else
        echo "No valid Platform Version."
        echo "Skipping unattend."
        debugPause
fi

fog.bcu

#!/bin/bash

dots "Copying BIOS change script"

if [ -f "/images/drivers/CMSL-BIOS_Change.ps1" ]
then
        cp "/images/drivers/CMSL-BIOS_Change.ps1" "/ntfs/Drivers"
        echo "Done"
        debugPause
else
        echo " Failed! Could not find bios change script."
        debugPause
        sleep 60
fi

echo "fog.bcu done."
debugPause

FOS not mounting drive for post download scripts.

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