This information is presented in the user guide/datasheet for the device, which can be found on the downloads tab of the product listing.
However if you are using a mobile phone or tablet to view our website it may not be visible.
To this end I have copied in a link to the electronic version of the instructions as well as a brief summary of the requested information below for your convenience.
To initialize (format) your “WALKMAN”
You can format the built-in flash memory of your Walkman. If the memory is
formatted, all files including the Help guide (HTML document) will be erased
and all setting values returned to their defaults. Be sure to verify the files stored
in memory prior to formatting, and then export any necessary files to the hard
disk of your computer or other device beforehand.
1 Press and hold the BACK/HOME button until the Home
2 Select [Settings] – [Common Settings] – [Reset/
Format] – [Format] – [Yes] – [Yes] in this order.
Press the Up/Down/Left/Right button to select the item, and then press the Play/Pause
button to confirm.
When initialization finishes, [Memory formatted.] appears.
DO NOT FORMAT THE BUILT IN FLASH MEMORY USING WINDOWS EXPLORER.
Date published: 2016-02-26