# I/O tweaks

Fix buffered I/O after Win98 | BUFFEREDIOFIX | Windows 98 was the last platform to support asynchronous disk I/O from devices such as CD-ROMs. This flag suppresses requests for asynchronous mode, avoiding errors from this operation.
Set CDROM Drive Type | CDROMDRIVETYPE | Simulates each disk device to appear as a CDROM type. This allows you to copy the content of some CDs onto a hard disk and override the disk type controls that form some very basic copy protection schemes.
Hide empty CDROM drives | HIDECDROMEMPTY | Some old games didn't handle the possibility of having multiple CDROM devices and simply look for the game in the first available CDROM. If you have physical and virtual CDROM devices in your system, it may become complicated to insert a physical CD on a virtual device (or vice versa). This flag removes any CDROM devices that don't mount a CD from the list of available devices, so that you can simply unmount all disks except for the desired one.