It is bussiness goal to determine type of USB device. I have 2 devices, USB HDD and and USB flash stick:
"uid" = "USB:105825A2374556325444"
"kUSBSerialNumberString" = "575839314542374556325444"
"bDeviceClass" = 0
"bDeviceSubClass" = 0
"iSerialNumber" = 3
"Bus Power Available" = 450
"Built-In" = No
"AppleUSBAlternateServiceRegistryID" = 4294972871
"iProduct" = 2
"USB Serial Number" = "575839314542374556325444"
"USB Vendor Name" = "Western Digital"
"bNumConfigurations" = 1
"kUSBProductString" = "Elements 25A2"
"IOPowerManagement" = {"DevicePowerState"=0,"CurrentPowerState"=3,"CapabilityFlags"=65536,"MaxPowerState"=4,"DriverPowerState"=3}
"kUSBVendorString" = "Western Digital"
"USB Product Name" = "Elements 25A2"
"iManufacturer" = 1
"idVendor" = 4184
"Device Speed" = 3
"kUSBCurrentConfiguration" = 1
"idProduct" = 9634
"bcdDevice" = 4129
"non-removable" = "no"
"USB Address" = 2
"sessionID" = 19316584569713
"IOCFPlugInTypes" = {"9dc7b780-9ec0-11d4-a54f-000a27052861"="IOUSBHostFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
"IOClassNameOverride" = "IOUSBDevice"
"PortNum" = 2
"bDeviceProtocol" = 0
"locationID" = 19005440
"IOGeneralInterest" = "IOCommand is not serializable"
"bcdUSB" = 784
"bMaxPacketSize0" = 9
}
{
"sessionID" = 19202157925367
"idProduct" = 1574
"iManufacturer" = 1
"bDeviceClass" = 9
"bMaxPacketSize0" = 9
"bcdDevice" = 1620
"iProduct" = 2
"iSerialNumber" = 0
"bNumConfigurations" = 1
"Bus Power Available" = 450
"USB Address" = 1
"Built-In" = No
"locationID" = 18874368
"bDeviceSubClass" = 0
"bcdUSB" = 784
"USB Product Name" = "USB3.1 Hub"
"PortNum" = 2
"non-removable" = "no"
"AppleUSBAlternateServiceRegistryID" = 4294972717
"bDeviceProtocol" = 3
"IOCFPlugInTypes" = {"9dc7b780-9ec0-11d4-a54f-000a27052861"="IOUSBHostFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
"IOPowerManagement" = {"DevicePowerState"=0,"CurrentPowerState"=3,"CapabilityFlags"=65536,"MaxPowerState"=4,"DriverPowerState"=3}
"kUSBCurrentConfiguration" = 1
"Device Speed" = 3
"USB Vendor Name" = "GenesysLogic"
"idVendor" = 1507
"IOGeneralInterest" = "IOCommand is not serializable"
"kUSBProductString" = "USB3.1 Hub"
"kUSBVendorString" = "GenesysLogic"
"IOClassNameOverride" = "IOUSBDevice"
}
I don't see any fields to distinguish that two types of devices and determine which is USB flash stick and which is USB HDD.
On Linux I can use Removable attribute to determine flash drive, on Windows it is DRIVE_FIXED (for HDD) type of disk.
