How to sector read a usb drive

[rohitsan]

I am having issues with sector reading a USB drive in Linux.

I am using the Linux unbuffered file I/O API calls.

My call to open succeeds:

open ( "/media/92A5-C148", O_RDONLY );

However, my call to read fails:

read ( fd, buffer, buffersize );

strerror() returns "IS A DIRECTORY".

Can anyone help?

[shadow123]

You have to access the device and not the mount point. Look at your devices list, where the USB is connected on.