USB host - How to watch not in the root directory

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Volume Size: 8036 MB

2015-10-30 07:55:08 0 System Volume Information/ 2016-05-13 16:18:38 958848 OFDM_GI.SNVWFM 2016-03-29 00:05:50 2526 PERSISTENT.STATE 2016-03-29 00:05:52 306 LAST.LIST 2016-03-29 00:05:52 16 LAST.USERFLAT 2016-03-29 00:05:52 39 LAST.PTRAIN 2016-04-05 17:28:36 3262446 ?????-???-?????-???-?????-???????-????????(1).mp3 2016-04-22 14:45:56 0 ??? ??? ??????/ 2016-04-25 12:30:06 0 SerialPortTerminal/ 2016-04-25 21:14:36 30656 Trace_0000.csv 2016-04-25 22:01:02 30796 Trace_00001.csv

I got it using the USB library.

It should be done using

// List the files in the root directory. Serial.println(); key.ls(LS_A | LS_DATE | LS_SIZE); Serial.println();

Serial.println(F("Done"));

But how to read not in the root directory, but, for instance, in SerialPortTerminal/?