I'm wondering how I can mount two USB drives from a USB device on Android.
I have a Garmin Oregon GPS device with a USB port. When I connect it to a Windows PC, I get two drives: one for the internal memory and one for the removable SD card. When I connect it to an Android tablet (Asus TF700T, running Android 4.2.1) I get only one drive 'USBdisk1' which represents the internal memory. How can I mount the second drive?
I suspect that both drives are properly detected by Android, but just the first one is mounted. I conclude this because when I attach it again to the PC, both drives have a new LOST.DIR folder created by Android. Btw, the filesystems are FAT and FAT32, so that shouldn't be a problem.
On my rooted Asus pad, I tried modifying /etc/vfold.fstab from:
dev_mount usbdisk1 /Removable/USBdisk1 auto /devices/platform/tegra-ehci.2/usb1/1-1/1-1.2 /devices/platform/tegra-ehci.2/usb2/2-1/2-1.2 /devices/platform/tegra-ehci.1/usb1/1-1 /devices/platform/tegra-ehci.0
To:
dev_mount usbdisk1 /Removable/USBdisk1 1 /devices/platform/tegra-ehci.2/usb1/1-1/1-1.2 /devices/platform/tegra-ehci.2/usb2/2-1/2-1.2 /devices/platform/tegra-ehci.1/usb1/1-1 /devices/platform/tegra-ehci.0
dev_mount usbdisk2 /Removable/USBdisk2 2 /devices/platform/tegra-ehci.2/usb1/1-1/1-1.2 /devices/platform/tegra-ehci.2/usb2/2-1/2-1.2 /devices/platform/tegra-ehci.1/usb1/1-1 /devices/platform/tegra-ehci.0
...this was just "try and error" and it ended with a severe error :)
What are the correct (auto-)mount commands?
vold.fstab. However, 1 and 2 is most likely wrong in my case, because I don't have two partitions, but two drives. And after I tried with 1 and 2 the device no longer booted properly (error "System UI has stopped"). I guess the key to the solution resides in<sysfs_path>(the params behind 'auto'), but I don't know what these paths exactly mean and under which path the second drive resides. – user2346874 May 5 '13 at 8:30