PCIe TO M.2 (B) Tutorial

Product Introduction

PCIe TO M.2 (A) is a PCI-E to M.2 adapter card used for upgrading hard drives SSD solid-state drive cards, and supports CM4

Characteristic

• Supports NVMe protocol M.2 interface hard disk protocol, high-speed read and write, high work efficiency
• Only supports CM4 expansion board
• Support Raspberry Pi Compute Module 4
• Compatible with M.2 hard drives of different sizes
• On board work indicator light, the LED stays on when powered on and flashes during reading and writing, indicating the clear working status at a glance
  
  

Instructions for use

Tutorial on mounting a hard drive to CM4

Format Hard Disk

• Insert the hard drive into the corresponding position of the PCI-E to M.2 adapter card and secure it with the screws in the screw pack.
  
• After powering on and starting, perform lspci to check the PCIE device
• 
• Execute sudo mkfs. ext4/dev/nvme0n1p1 to format the device (mkfs. Then press tab to see many different suffix names, which are the format you want to format)

Wait for a moment, when done appears, it means that the formatting has been completed.

Mount

Create mounting directory
sudo mkdir toshiba
Mount device
sudo mount /dev/nvme0n1p1 ./toshiba
Check disk status
df -h

Mount hard drive

• Create a new directory as the disk mount point

sudo mkdir /home/pi/toshiba

• Execute the following command to mount the hard drive

sudo mount /dev/nvme0n1p1  /home/pi/toshiba

Execute again

df -h

You can see the hard drive we inserted and related information, indicating that the hard drive has been successfully mounted



• For different hard drives, their names may vary. Here, nvme0n1p1 is displayed. Please refer to the hard drive you inserted.

literacy test

• Enter the directory of the mounted disk

  cd /home/pi/toshiba
  

  • free memory

  sudo sh -c "sync && echo 3 > /proc/sys/vm/drop_caches"
  

  • Copy Raspberry Pi Memory Content to Hard Drive (Read)

  sudo dd if=/dev/zero of=./test_write count=2000 bs=1024k

  
  

• Copy hard drive content to Raspberry Pi memory (write)

 sudo dd if=./test_write of=/dev/null count=2000 bs=1024k

• Note: Raspberry pie is more affected by different cards and different environmental testing effects

To：

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