I have to convert an existing DOS bootable CD-ROM script so that I can use an IOMEGA USB CD-RW drive. My existing bootable CD looks like an A: drive when booted, then I can easily mount the rest of the CDROM as a CDROM drive using MTMCDAI.SYS and MSCDEX.exe. I have made some progress today, and can easily use aspiehci.sys / usbcd1.sys / and mscdex to mount the CDROM drive from a boot floppy. When I use the USB floppy and boot disk I can mount the CDROM drive everytime with no problems. It only when I use this boot floppy to create my bootable CD that I start seeing problems. Here is the error message I am getting when booting from the CD. IOMega ASPI USB-EHCI 1.0 V.13 09 May 2003 ID1 = IOMega CDDVD522416EC3C Installed successfully Bad or missing A:\DOS\USBcd1.sys error in config.sys Bad or missing command interpreter. Here is a copy of my config.sys: [COMMON] SHELL=A:\COMMAND.COM A:\ /P DEVICE=A:\DOS\aspiehci.SYS /int /all DEVICE=A:\DOS\USBCD1.SYS /D:USB-CD buffers=30 files=50 LASTDRIVE=M And here is my autoexec.bat: @ECHO OFF echo ----------------- PROMPT $p$g PATH A:\;A:\DOS;L:\;L:\DOS DOSKEY rem Initialize CD-ROM (L:\) rem a:\DOS\guest.exe letter=L A:\DOS\MSCDEX.exe /D:USB-CD /L:L if exist L:\install.bat goto finish echo CD-ROM drive not initialized goto end :finish rem take A:\DOS out of path PATH L:\;L:\DOS;A:\; rem Call CD Specific Install BATCH file --------------- echo Call CD Install SCRIPT (Install.bat) --------------- echo replace me later.... call L:\Install.bat :end Please keep in mind that the above two files and device drivers work just fine when I use a boot floppy, but as soon as I create a bootable CDROM with floppy imulation, I get the error. Brian Strickland

When, for example, booting from a 98 cd, the boot process creates a ramdrive at a:. So a: is not the cdrom drive letter. If your boot cd does the same thing and you haven't anticipated this it's possible the files you need aren't being copied to a: thus causing the error messages.

Try the Panasonic USB Drivers: device=usbaspi.sys /v device=usbcd.sys /d:usbcd001 mscdex.exe /d:usbcd001 http://panasonic.co.jp/pcc/products/drive/other/driver/f2h_usb.exe

I figured out what I was doing wrong with the CD-ROM boot CD. I had to add ramfd.sys in config.sys before I init the USB cdrom. <CONFIG.SYS> [menu] menuitem=VMECD, Using standard VME CD-ROM (VMIVME-7459) menuitem=USBCD, Using Iomega USB CDROM menudefault=VMECD,30 menucolor=7,0 [VMECD] ;DEVICE=A:\DOS\MTMCDAI.SYS /D:MTMIDE01 DEVICE=A:\DOS\MTMCDAI.SYS /D:USB-CD [USBCD] DEVICE=A:\DOS\ramfd.sys DEVICE=A:\DOS\aspiehci.SYS /int /all DEVICE=A:\DOS\USBCD1.SYS /D:USB-CD [COMMON] SHELL=A:\COMMAND.COM A:\ /P buffers=30 files=50 LASTDRIVE=M <AUTOEXEC.BAT> @ECHO OFF echo ----------------- PROMPT $p$g PATH A:\;A:\DOS;L:\;L:\DOS DOSKEY rem Initialize CD-ROM (L:\) rem a:\DOS\guest.exe letter=L A:\DOS\MSCDEX.exe /D:USB-CD /L:L if exist L:\install.bat goto finish echo CD-ROM drive not initialized goto end :finish rem take A:\DOS out of path PATH L:\;L:\DOS;A:\; rem Call CD Specific Install BATCH file --------------- echo Call CD Install SCRIPT (Install.bat) --------------- echo replace me later.... call L:\Install.bat :end Brian Strickland