HP 54522A - Page 214

Disk Menu
To access the disk menu.
e Press the biue shift key on the keypad, then press the WEorm save key.
The disk menu is a shifted function above the Wform (waveform) save key.
When you access the disk menu, you can choose from five disk
operations: load scope, store scope, store image, delete, and format. If
there is a disk in the drive, you will also see a directory listing
displayed on the screen of all the files on the disk. The directory
listing includes the file name, date, time, and size of each file on the
disk. If there is no disk in the drive, only the disk menu is displayed.
If the type of file is not recognized by the oscilloscope, the type field is
left blank. Also, the oscilloscope lists only those files that are in the
root directory of the disk. All other directories on the disk are listed
like files, except that a file extension is not appended to the filename
and the file size is listed as 0 bytes. Any files that are not in the root
directory are not included in the directory listing. There is no way to
change to a subdirectory or access files in a subdirectory.