X-Authentication-Warning: delorie.com: mail set sender to opendos-bounces using -f X-AuditID: 3d080dca-ae17abb000000a06-6c-4667dd8e2558 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: Fun with USB (update) Date: Thu, 7 Jun 2007 20:27:25 +1000 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Fun with USB Thread-Index: AcV6/1gIf6mmCjUfQLGnb4RYowKOe4Rb04eA From: "da Silva, Joe" To: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id l57AuLSg032582 Reply-To: opendos AT delorie DOT com Hi folks. Just an update ... Since I posted about this, I have learnt that USB flash drives may be formatted in two ways : 1) Like a floppy disk ("removable" media), with just a boot sector at LBA=0. 2) Like a hard drive, with a partition table at LBA=0 and a separate boot sector at LBA>0. I have also learnt that the only driver combination that would work for me (Panasonic's usbaspi 2.20 + DatOptic's nj32disk 1.06), only seems to recognize #1. All other driver combinations (including the popular usbaspi + di1000dd) failed, typically "hanging" my PC. However, recently I managed to find some more of the Adaptec ASPI drivers, in an archive called 'dosdrvr.exe' (just search the web, I can't find it at Adaptec's site). Now I have a second driver combination that works for me : Panasonic's usbaspi 2.20 + Adaptec's aspidisk 4.01b This driver combination recognizes both #1 and #2 formats! BTW, it uses about 5k additional RAM, but you'd expect it to use a bit more, since it does more ... I hope that's of some interest here. :-) I should also mention a totally different driver set, dosusb + usbdisk, is partially successful for me, although it still needs further development/debugging. However the dosusb driver package intends to provide more general USB support in DOS, not just "disk" drives. For more details, see http://www.georgpotthast.de/usb/ Joe. > -----Original Message----- > From: shadow AT shadowgard DOT com [mailto:shadow AT shadowgard DOT com] > Sent: Monday, 27 June 2005 7:36 PM > To: opendos AT delorie DOT com > Subject: Re: Fun with USB > > > On 27 Jun 2005 at 18:07, da Silva, Joe wrote: > > > Well folks, over the weekend, I decided to experiment with > > a bunch of USB and related drivers, on a Pentium II machine > > with an Intel 440LX chipset, and one of those little USB > > Flash drives. In pure DOS. > > > > You may be interested to know that the experiment was a > > success! I found two drivers that in combination, worked > > with my hardware and provided me with what appeared a > > normal hard drive. I could even run 'chkdsk' and 'scandisk' > > on the USB Flash drive, and use long file names by using > > Henrik Haftmann's 'doslfn' TSR. Most satisfactory. :-) > > > > For details on various drivers and URL's, please see : > > http://www.computing.net/dos/wwwboard/forum/13447.html > > > > This is all that I needed to add in my 'config.sys' to get > > this "USB mass storage" stuff working in DOS : > > > > REM - Panasonic's universal USB-controller driver (formerly Novac) > > device=C:\ASPI_USB.DRV\PANASONC\USBASPI.SYS /v /w > > REM - Workbit's ASPI mass storage driver for USB drives > (formerly Novac) > > device=c:\ASPI_USB.DRV\datoptic\NJ32DISK.SYS > > > > I tested this successfully on MS-DOS 7.10 (from W95B/C) > > and DR-DOS 7.03. I also tried the same with DR DOS 6.0, > > but without success. > > Any idea if this will work on larger USB drives? Like my Iomega 80 > gig and 250 gig drives? :-) > > BTW, I haven't gotten around to it yet, but there are IDE to CF card > adapters available. I plan on seeing if I can set up a CF card as a > "read only" drive for some of my "dedicated" MS-DOS boxes. All the > temp files and stuff can go on a RAM disk. > > -- > Leonard Erickson (aka shadow) > shadow at shadowgard dot com > > >