China DOS Union

Although I'm new here, I've downloaded and tested all the "super" disks from you guys. I just tested one function, which is to see if these disks support USB光驱 direct boot into DOS. There are as many as 21 burned CDs, but none meet my requirements. None support USB光驱 boot. I mean direct boot from the USB光驱, not supporting USB光驱 reading and writing after booting in other ways. So I think you guys, the bosses, should solve this problem before claiming your disks are "super"!

[ Last edited by fengbaishen on 2006-7-28 at 08:42 ]

This is an issue with your motherboard, there is a conflict with usbaspi.sys, not an issue with the bootable disk itself.

Originally posted by fujianabc at 2006-7-28 09:22:
This is a problem with your motherboard, there is a conflict with usbaspi.sys, not a problem with the boot disk itself.

Then how to explain this problem? If you boot with an IDE CD-ROM, it can support a USB CD-ROM. When installed in IDE mode, the installation of usbaspi.sys is still successful. Why is it not successful in USB boot mode? Moreover, the XP SP2 (Tomato Garden version) installation disk can continue the installation when booted from a USB CD-ROM. How is that? I'm slow-witted, please give me some advice?

After booting DOS from a USB device, usbaspi.sys cannot be loaded (including USB drives). The BIOS already has a built-in USB driver (just like the saying "after eating ginseng, you can't have radishes"). At this time, the phenomenon of "There is an error in your CONFIG.SYS file on line ***!" will appear, that is, usbaspi.sys damages the built-in USB driver of the BIOS, causing DOS to fail to recognize CONFIG.SYS.

The installation disc of the (Tomato Garden version) is of the winxp kernel. It should be known that there were no USB optical drive devices in the DOS era. Besides, USB optical drives are relatively rare, so it is inevitable to fail to boot from a USB optical drive.

To achieve booting from a USB optical drive, the producer needs to have considerable experience. I don't have a USB optical drive for testing, so I can't help you.

Like back then, not to mention USB optical drives, even ordinary IDE optical drives didn't have universal drivers. At that time, I also collected multiple drivers from different manufacturers. Later there was vide-cdd.sys, I can't remember the version, and it was upgraded all the way to now. The problem of USB optical drives is more complicated, and it's impossible to have a single driver that works for all. If you have the ability, find a suitable driver by yourself. usbaspi itself is not universal.

Thanks to everyone for your presence and guidance. Indeed, I still need to keep looking. Just now, with the help of others, I tested several machines with USBASPI and it was successful. If I encounter a machine that doesn't work well, I will definitely come to ask for your advice again! Thanks!

To boot the system with a USB CD-ROM and also access the USB CD-ROM, all contents on the virtual boot drive A from the boot CD must be saved to an accessible place before loading the USB driver. Otherwise, after loading the USB CD-ROM driver, the virtual drive A cannot be accessed, and the execution of CONFIG.SYS or AUTOEXEC.BAT files will be interrupted.

One method is to first create a virtual memory drive, then copy the files to be used in drive A in AUTOEXEC.BAT to the virtual memory drive, then switch to the virtual memory drive. After loading the USB CD-ROM driver, all subsequent commands will be accessed from the virtual memory drive.

Another method is to run a program in CONFIG to virtualize memory as drive A, then copy all contents from the original virtual drive A of the boot CD to the virtual drive A of this program. After running this program, accessing drive A is actually accessing the virtual memory drive, and the problem of not being able to access drive A after loading the USB CD-ROM driver will not occur. But I think this program is useless and did not keep it. You can search the Internet for USB CD-ROM boot disks, and this program should be available. I saw it on the boot disk of a USB CD-ROM configured on a Toshiba PR100 notebook. Maybe this program is also on the system recovery CD of Toshiba PR series notebooks.

[ Last edited by LanCat on 2006-8-1 at 23:18 ]