Of course a slow hard disk used as source or destination for copying will also ruin the performance. It works only in USB 1 mode. Following is an incomplete list of USB flaws and problems that could or can be observed: USB drivers sorted from latest and best to oldest and most historical 2. They were initially released into public in —07 and they are still in intensive development.

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Obviously this is a driver bug, an incompliant or defective USB device or transfer errors should not be able to cause such effects. Can be booted from floppy or CD.

Interesting DOS programs

If it seems persistent, following reasons are possible: Before contacting him make sure the fault is not on your side, only if the USB device is booting on another computers BIOS contact him. Also USB 2 cardreaders can be slow even very slow – xos if you insert a fast card and connect to a dod PC, some reader internals will slow down the transfer to near USB 1 performace. They are supposed to work only with some specified hardware by one manufacturer.

Following is an incomplete list of USB flaws and problems that could or can be observed:. Author reportedly is working on USB 3 support now, stay tuned or contact him if interested in beta testing.


USB Support for DOS

It is fine that it supports hot-plugging not partially but completely and you can change one flashdisk to another. After plugging you simply load it again from the command line. USB drivers sorted from latest and best to oldest and most historical 2.

SYS itself is English. It is not only the mass storage driver but general low level driver for USB devices with various addons which support special devices like storage, printers, mouse, keyboard etc. Developed by Panasonic in …, latest version seems to be 2.

There used to be the Motto Hairu diver included but now you have ussb download it dude Historical pre-release news from —11— Again, problem can be random just retry or persistent. Still slow, driver is optimized for small size to get a bootmanager fitting in MBR area only and not optimized for speed with caching.

Currently last update —01—30 they support only USB 1.

A good but rarely implemented idea is to additionally reveal speed mode USB 1 doe USB 2for example by colour, or distinguish reads from writes. Most USB storage devices have some activity light revealing that a data transfer is running.


It implements only read access, no write support yet. License is unclear and there is almost no documentation. Project site and download: Possible reasons for transfer errors include: It provides limited hotplug support only.

On this page… hide 1. TXT google translate fails, which language is this? USB protocols are intended to be safe, and to recover from errors by resending data blocks that seem to have got lost or corrupted.

The lowlevel part is called sbp2aspi and the highlevel nj32disk. ZIP has the lowlevel set aspiohciaspiuhci and aspiehci and the highlevel part guest. Suse Changes – Search: View Edit History Print.


Devices revealing this problem by the activity light for example different colour for USB 1 vs USB 2 mode exist but are very rare. There is also a lot of other mostly old open source DOS related software on his website. Nice… I have had that same problem accessing anything on http: There exist several generations of USB interfaces: