-The drivers for certain UDMA controllers are known to prevent smooth thread scheduling and cause -9129, -9093, and -9094 errors. Installing the standard Microsoft IDE driver included with Win98/ME usually resolves these errors:How to install the Generic IDE Controller from the Win98/ME CD-ROM:-Insert the Win98/ME CD-ROM-Open the Control Panels>System>Device Manger tab-Expand the Hard disk controllers list-Highlight the IDE Controller device, click "Properties-Click the Driver tab and then the "Update Driver"button-In the Update Device Driver Wizard, enable "Search for a better driver..."and click "Next-Enable the CD-ROM and click "Next-Enable "Install one of the other drivers"and click "View ListOnce installed, enable DMA for all IDE/ATA drives:-Open the Control Panels>System>Device Manager window. -Expand the Disk Drives list (not the Hard Disk Controllers list).-Highlight the Generic IDE disk drive (or all drive(s) used for recording audio), click Properties>Settings tab, enable the DMA option and restart Windows.