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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