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</pre> The first line indicates that the USB device has been correctly recognized by the OS.('''JMicron''' is the USB storage chip supplier)
pi@raspberrypi:~ $ fdisk lsblk -lp fdisk: cannot open /dev/ram0: Permission deniedThe result is as follows<pre> fdiskNAME MAJ: cannot open /dev/ram1: Permission deniedMIN RM SIZE RO TYPE MOUNTPOINT fdisk: cannot open /dev/ram2sda 8: Permission denied0 0 298.1G fdisk: cannot open /dev/ram3: Permission denied0 disk fdisk: cannot open └─/dev/ram4sda1 8: Permission denied1 0 298.1G fdisk: cannot open /dev/ram5: Permission denied0 part fdisk: cannot open /dev/ram6sdb 8: Permission denied16 0 fdisk: cannot open /dev/ram7: Permission denied74.5G fdisk: cannot open /dev/ram8: Permission denied0 disk fdisk: cannot open └─/dev/ram9sdb1 8: Permission denied17 0 fdisk: cannot open /dev/ram10: Permission denied74.5G fdisk: cannot open /dev/ram11: Permission denied0 part fdisk: cannot open /dev/ram12mmcblk0 179: Permission denied0 0 7.4G fdisk: cannot open /dev/ram13: Permission denied0 disk fdisk: cannot open ├─/dev/ram14mmcblk0p1 179: Permission denied1 0 256M fdisk: cannot open 0 part /dev/ram15: Permission deniedboot fdisk: cannot open └─/dev/mmcblk0mmcblk0p2 179: Permission denied2 0 7.1G fdisk: cannot open /dev0 part /sda: Permission denied fdisk: cannot open </dev/sdb: Permission deniedpre>
The last There are two lines indicate that 2 SSDs devices were found. (/dev/sda and /dev/sdb)
==How to view the HDD/SSD==
1. Check USB device: lsusbThe result is as follows<pre>pi@raspberrypi:~ $ lsusb
Bus 002 Device 004: ID 152d:0561 JMicron Technology Corp. / JMicron USA Technology Corp. JMS551 - Sharkoon SATA QuickPort Duo
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
If you cannot find the corresponding USB device, please check that your USB device is tightly connected, or replug the USB3 connector, or replace the USB3 connector with a USB-A to USB-A cable.
Sometimes, '''insufficient power supply ''' may also cause the USB device not to be found, so we can also try to replace a high-quality power adapter.
If you have tried these actions and still cannot solve the problem, please contact us （support（'''support@geekworm.com） com'''） with the result information after running the lusb '''lsusb''' command and your order number.
2. View HDD/SSD