Hi, List ! I've returned to the problem of giving DOS access to USB-interfaced disks having 4,096-byte sectors, and after a coupla days work have a q&d working implementation - a simple replacement for (Adaptec's / others') "ASPIDISK.SYS" which can mount a DOS FAT (12/16/32) partition interfacing with a "SCSIMGR" (in my case, using the Panasonic/Novac USBASPI.SYS). Though not fully tested, this is working well under MSDOS 7.10 - have mounted 500 Megabyte partitions of FAT16 and FAT32 type and created/copied/deleted bunches of files with no data corruption ! So this was my self-offered Xmas present, sort of.
Notice how at the moment this can't be tested in FreeDOS for lack of large sector support in our kernel, so ... More on this later when (or if) somebody is interested , but I'm reporting sucess anyway for the record and because testing has made a problem apparent - not in my driver, but in DOSLFN ! The - otherwise excellent - DOSLFN does internal caching at the SECTOR level and won't work with other than 512 byte sectors ! Apparently at least it doesn't break or otherwise bring havoc to the LFNs, but it can't "see" them either. I'm a bit confused as to who is now maintaining DOSLFN, will the man be reading my mail and have an interest in upgrading it ? Meanwhile at least please confirm that DOSLFN can't do any harm to existing (stored) LFNs on a 4K sectored disk ? Then, what about disk caching programs proper? In quick tests with Smartdrv loaded, it seemed to operate properly, although I'm not even 100% sure the 4K partition was cached at all. How about UIDE ? I can't remember if it caches at DOS level ( int 21, int 25/26) or BIOS int 13 - my brand new ASPI4KSD does not implement an int 13 at the moment (and possibly never will). That's all for now, folks, except I want to wish all and any of you including your families my best wishes for AD 2014 ! -- Czerno ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Freedos-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freedos-devel
