![]() There is also a, which contains a summary of speed tests for USB drives that accumulated 5 speed tests or more. If you want to test the read/write speed of your own USB drives and share the results with other people, you can follow the instructions in this page. When you use multiple small files, you'll probably get much lower read/write performances. Be aware that all these tests are made by making a sequential read and write operations of a single file. The speed is calculated and displayed in Megabytes per second (MB/Sec). USBDeview make this test by writing a large file into the USB flash drive, and then reading back the same file to getting the read speed. In this page, you can find the speed test results of USB flash drives, made. If you have connected your USB storage device and it is not listed by lsblk but appears in the journal without being assigned a block device, see General troubleshooting#Cannot use some peripherals after kernel upgrade.Īlso ensure that your BIOS has both XHCI Handoff and EHCI Handoff enabled, but this is usually not an issue with most modern devices.Welcome to Speed Tests Web site for USB Flash Drives. Troubleshooting No USB storage devices are detected Multiple mount tools facilitate mounting as a regular user. See FAT#Writing to FAT32 as normal user if you want normal user to do the mount/unmount action. If it does not work, make sure that the file system is mountable and writable as root, see the previous section for details. # mount -o gid=users,fmask=113,dmask=002 /dev/sda1 /mnt/usbstick If you want non-root users to be able to write to the USB stick, you can issue the following command: Note: See for example mount/unmount scripts using sudo. If mounting does not work, you can try to recreate the file system or even repartition the disk. If mount does not recognize the file system of the device you can try to use the -t argument, see mount(8) for details. Newly plugged-in devices are usually shown in the journal. See File systems#Identify existing file systems for details. The first thing one needs to access a storage device is its identifier assigned by kernel. If you use the latest udev, you may just plug your device in and the system will automatically load all necessary kernel modules. If you do use a custom-made kernel, ensure it is compiled with SCSI-Support, SCSI-Disk-Support and usb_storage. If you do not use a custom-made kernel, you are ready to go, for all Arch Linux stock kernels are properly configured. Getting a kernel that supports usb_storage Some ports might not share the same controller, preventing you from mounting the device. Note: Before you decide that Arch Linux does not mount your USB device, be sure to check all available ports. ![]()
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