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drygdryg/emulating_usb_flash_in_linux.md

Last active March 15, 2025 07:53
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How to emulate USB flash drive in Linux
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emulating_usb_flash_in_linux.md

Emulating mass storage USB flash devices in Linux

Create a new disk image with space pre-allocation (4000 MBytes):

fallocate -l 4000M virtual_usb.img

Create Ext4 file system:

mkfs -t ext4 virtual_usb.img

Load the necessary modules:

sudo modprobe dummy_hcd
sudo modprobe g_mass_storage file=virtual_usb.img idVendor=0x8564 idProduct=0x1000 iSerialNumber=C71FFD58CDF9 iManufacturer="JetFlash" iProduct="Mass Storage Device" removable=true cdrom=false
@strongHunter
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If someone want to share the device using USBIP utility, make sure to add the stall=false flag to the command

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