Installing Homebrew

Homebrew is a popular package manager for installing and managing software packages on macOS. However, it can also be used on Linux systems, including Ubuntu. First, let's install Homebrew on our Ubuntu server:

# Install dependencies
sudo apt-get update
sudo apt-get install -y build-essential curl
Install Homebrew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Checking Homebrew Installation

To verify the installation, run:

brew doctor

This command checks for any potential issues with your Homebrew installation.

Mounting RAID1 Array

Before we can access the data on the RAID1 array, we need to mount it:

# Create a new mdadm.conf file
sudo touch /etc/mdadm.conf
Add the following lines to the file (replace /dev/sdb, /dev/sdc, /dev/sdd, and /dev/sde with your actual drive paths):
sudo echo "DEVICE /dev/sdb" | sudo tee -a /etc/mdadm.conf
sudo echo "DEVICE /dev/sdc" | sudo tee -a /etc/mdadm.conf
sudo echo "DEVICE /dev/sdd" | sudo tee -a /etc/mdadm.conf
sudo echo "DEVICE /dev/sdd" | sudo tee -a /etc/mdadm.conf
sudo echo "ARRAY /dev/md0 level=raid1 num-devices=4 metadata=0.90 name=my_raid_array" | sudo tee -a /etc/mdadm.conf
Update mdadm configuration
sudo mdadm --create /dev/md0 --level=raid1 --raid-devices=4 /dev/sdb /dev/sdc /dev/sdd /dev/sde
Set the RAID array to start automatically at boot
sudo mdadm --auto-activate /dev/md0
Format the RAID array as ext4
sudo mkfs.ext4 /dev/md0
Mount the RAID array
sudo mkdir /mnt/raid
sudo mount /dev/md0 /mnt/raid

Installing Necessary Software

Now that we have Homebrew installed and our RAID1 array mounted, we can install the necessary software to recover our photographs:

# Install PhotoRec
brew install testdisks photorec

Recovering Photographs

Use the following command to start the PhotoRec recovery process:

sudo /usr/local/bin/photorec /mnt/raid

This command will search for various file types, including JPEG and other image formats, on the RAID array and recover them to the current directory.

Summary

• Install Homebrew: Use the provided commands to install Homebrew on your Ubuntu server.
• Mount RAID1 Array: Follow the steps to mount your RAID1 array and format it as ext4.
• Install Necessary Software: Use Homebrew to install TestDisks and PhotoRec.
• Recover Photographs: Run the PhotoRec command to recover your photographs from the RAID1 array.