User's Manual
691
Disk mode
To prevent data errors, you must be careful not to 
subject the OASYS to physical impact or vibration 
while writing data to the internal CD-R/RW drive 
(or while formatting a disc).
Disk mode is where you can save data from internal 
memory or sample RAM to the internal hard disk, 
internal CD-R/RW drive, or an external USB-
connected device, or load data from media into 
internal memory or sample RAM. You can also copy or 
delete files, or format media.
Finally, you can create audio CDs from WAVE files, 
using either the internal CD-R/RW or external USB 
CD-R/RW drives.
The following media can be used.
Hard disk drives, removable disk drives, USB flash 
media
The OASYS supports MS-DOS FAT16 and FAT32 disk 
formats. FAT 16 supports up to 4 GB; FAT 32 supports 
up to 2 Terabytes (2,000 GB). 
CD-R/RW
The OASYS can read and write UDF format CD-R/RW 
disks. For more information, see “CD-R/RW disks on 
the OASYS: UDF and packet-writing” on page 1033.
CD-DA (audio data) can be recorded/played, and 
ISO9660 (level 1) format can be read.
Files, directories, and icons
The OASYS manages data on disks and other media in 
a hierarchical manner, using files and directories. The 
contents of a file (whether it is a file or a directory) are 
indicated not only by the name but also graphically by 
an icon. Files and directories have differently shaped 
icons.
The OASYS collectively refers to files and directories 
recognizable by MS-DOS (readable by a MS-DOS 
computer), and UDF format and ISO9660 format files 
and directories as “DOS files” and “DOS directories.” 
Different types of DOS file are distinguished by the 
extension added to their filename.
In the case of a DOS file with an extension other than 
listed below, selecting “Load selected” to open the 
dialog box will cause the file to be considered to be a 
Standard MIDI File (SMF). However, in this case non-
SMF files cannot be loaded.
When OASYS data is saved, one of these filename 
extensions will be added automatically, according to 
the type of data. If these filename extensions are 
modified on a computer, the file will be treated as an 
undefined file when it is reloaded back into the 
OASYS, and will be handled as a Standard MIDI File.
The diagram on the next page shows how the OASYS 
handles files.
Since .PCG, .SNG, and .KFX files can be opened to 
divide their contents, they are displayed as directory 
icons. Different colors are used to indicate different 
types of file.
Extension Type
.PCG
Program, combination, drum kit, wave 
sequence, global settings (OASYS format)
.SNG Songs and regions (OASYS format)
.MID Standard MIDI File (SMF)
.EXL MIDI System Exclusive data
.KMP
Korg Multisample Parameter file Songs and 
regions (OASYS format)
.KSF Korg Sample File (Korg format)
.KSC Korg Script File (Korg format)
.AIF AIFF file
.WAV WAVE file
.KCD Audio CD track list (OASYS format)
.KFX Effect preset (OASYS format)
Extension Type










