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Backup NVME System

1. Backup Preparation​

Open the Ubuntu (or Ubuntu VM) terminal and install gparted:

sudo apt install gparted

Remove the NVMe SSD from the board, insert it into an NVMe enclosure, and connect it to the computer/VM.
The system will automatically recognize the drive.

Open the system application menu, search for gparted, and launch it:

⚠️ Be careful to select the correct disk device number. Incorrect operations may cause data loss.

2. Record Partition Information​

Record the detected disk device number, for example:

/dev/sdb

Run the script below to view free space and partition start positions:

./parted_info.sh /dev/sdb

If the script lacks execute permissions:

chmod +x parted_info.sh

parted_info.sh content:​

#!/bin/bash
date
echo $1
sudo parted $1  <<EOF
unit s
print free
quit
EOF

3. Backup Image (.img) File​

Ensure your computer/VM has enough free space to store the backup image.

Run the backup command:

sudo dd if=/dev/sdb of=backup.img bs=512 count=27875328

Where:

  • if=/dev/sdb → disk device number
  • of=backup.img → output image filename
  • bs=512 → block size
  • count=27875328 → number of blocks (from partition info)

To monitor backup progress in another terminal:

sudo watch -n 3 pkill -USR1 ^dd$

Wait until the backup completes.

4. Copy Image to Windows​

Since the backup image is created inside a Linux VM, enable Shared Folders to transfer it to Windows.

Open the VM settings:

Enable Shared Folders, then add a Windows path (example: D:\Virtual Machines\share):

Copy the backup image to the shared folder:

sudo cp backup.img /mnt/hgfs/share/

Backup Complete.