I appreciate all the suggestions. I will consider switching to VMWARE or DOSEMU.
I did manage to get FreeDOS to boot from the virtual hard drive on the Microsoft Virtual PC 2007, with some tweaking per the suggestions made on this thread. I will try VMWARE and DOSEMU and judge for myself, but Free is better than buying something I'm not sure that I really want. Ideally my new operating system will be self-supporting when I'm done (or in my grave) and won't depend on FreeDOS, MS-DOS, Windows, VMWARE, DOSEMU, or Microsoft Virtual PC. I just read that the FreeDOS Kernel is the same as the DOS-C kernel documented in a book, written mostly in C. I'm still experimenting with Ada, but it looks like using such a nice language comes with a lot of overhead. The executable for my test version won't fit on a single floppy. It's at 1.8 MB and I'm just getting started. Right now I'm working on an English text parser which can do things like spell checking, grammar analysis, etc. I'm using Ada for that job because I like how strings are handled in Ada better than C/C++. I've also played with Java a little. C# looks like Java or C++ warmed over to me, but I've just now started looking at C#. I have a group where I chronicle my development efforts and it's pretty geeky, but a lot of fun. I'm the only real member so far, as the other two members aren't really into o/s development. BTW, I have built and maintained operating systems before, in my work on Spacelab and for the defense industry. I'm not a total novice at operating systems type work, just struggling with a lot of PC-specific problems and poorly written code and lack of adequate documentation. I'm not supposed to say thank you for helping me, so I won't. lol Brent D. Martin (D as in David & Goliath) plug_0 wrote: > > On Mon, 2007-03-12 at 00:50 -0700, BrentMartin wrote: >> FreeDOS HIMEM64 3.26 [August 25 2006] (c) 1995, Till Gerken 2001-2006 tom >> ehlert >> HIMEM - Always On A20 method used >> UMB's unavailable! >> >> XCDROM V2.2, 2-08-2006. >> Driver name is "FDCD0001". >> UltraDMA controller at I-O address FFA0h, Chip I.D. 80867111h. >> Unit 0: Secondary-master, Virtual CD, PIO mode. >> UMB's unavailable! >> CD-ROM XMS/386 read cache, E. Auer <[EMAIL PROTECTED]> 2001-2004 >> License: GPL 2. For standard CD-ROM device drivers. >> XMS allocated: 3.00 MB, driver size with tables nad stack: 7035 bytes. >> CDRcache loaded as device CDRCACH0 - caching the device(s) of FDCD0001. >> >> UMB's unavailable! >> MORE$driver by Eric Auer 2003 loaded. Use: ... > MORE$ >> UMB's unavailable! >> >> Invalid Opcode at 214C 0583 0246 001E 0000 0000 0001 21AC 9DA2 00D1 FFF0 >> 7D3D 10.......trails off >> >> I tried to install FreeDOS on my AMD Athlon 64 3400+ machine, with the >> above >> results when I try to boot from a virtual FAT32 drive under Microsoft >> Virtual PC 2007. >> >> No matter which menu choice I make (1, 2, or 3) it does something >> similar. >> It won't let me select option 4 from the menu (4 - Load FreeDOS without >> drivers) >> >> I have a group where I posted some screen shots of my attempts to get >> FreeDOS to boot of the virtual hard drive. >> >> I'm guessing it's something simple, like running the sys command >> manually, >> but I hate to guess at such things. I'm using Virtual PC to protect my >> hard >> drive from potential corruption, and I pray a lot to the software gods >> that >> they won't let me down. >> >> Understand FreeDOS thread at my group with some nice screen shots >> >> I'm a professional programmer, with an interest in operating systems, and >> I >> am very interested in getting FreeDOS to run on Virtual PC or a similar >> virtual environment, for use in O/S research on an amateur basis. I'm >> working on my own O/S named DORIS, and I'm currently working in GNAT Ada, >> after trying Small-C and assembler. >> >> I would appreciate any help in getting this baby (FreeDOS) running! >> >> I can boot from the CD just fine and it comes up and runs fine under >> Windows >> XP Pro/SP2 with all the latest updates. >> >> I haven't tried FreeDOS on any other PCs, real or virtual, at least not >> yet. >> >> I'm hoping you have a quick fix. >> >> Thanks in advance for your kind attention and consideration, and please >> let >> me know if I'm doing something wrong or if it's a genuine problem that >> needs >> or needed to be reported. >> >> Danke schön! Merci beaucoup! Thank you very much. >> >> (I'm also interested in localization and languages and notice someone >> asked >> about that!) >> >> Brent martin > > DON"T USE MICROSOFT'S VIRTUAL PC. Go to http://www.vmware.com and > switch ASAP. A suggestion is that dosemu, which is free, might be > better at supporting freedos than even vmware. Virtual PC is an > inferior product compared to vmware. You can use an evaluation copy of > workstation and then use player for free to run the virtual machine you > created with workstation indefinitely. Windows 98SE, has Dos 7 > underneath which is the last real version of MS-DOS, works very well > in vmware-player and vmware-workstation. If you are interested in free > software, WHY ON EARTH ARE YOU TRUSTING MICROSOFT CONTROLLED PRODUCTS > TO TEST IT. Microsoft is a monopoly, Microsoft wants everyone to need > Windows, need I say more? > > -- Michael C. Robinson > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Freedos-user mailing list > Freedosemail@example.com > https://lists.sourceforge.net/lists/listinfo/freedos-user > > -- View this message in context: http://www.nabble.com/Invalid-Opcode-at-214C-0583-0246-001E-while-booting-FreeDOS-tf3387664.html#a9481531 Sent from the FreeDOS - User mailing list archive at Nabble.com. ------------------------------------------------------------------------- Take Surveys. Earn Cash. 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