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IBM DOS v5...

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  • 1ajs
    replied
    hmm not sure if this is what ur looking for the system it belonged to is long gone

    Leave a comment:


  • Minerva10210
    replied
    Thanks Agent Orange!

    I will fiddle with the files and see what I can do.

    Cheers!

    Leave a comment:


  • Dave Farquhar
    replied
    I knew someone who had an IBM PC/XT in the early 1990s, and I'm almost certain he ran IBM DOS 5 on it at the end. It's been a number of years now, but I distinctly remember seeing those 360K 5.25" IBM DOS 5 floppies. I even think I was the one who installed DOS 5 on it for him. I do know he didn't have a 3.5" drive in that machine.

    They may not have been easy to find, but it makes sense that IBM would have wanted to sell DOS upgrades to owners of those older machines that sported 5.25" drives from the factory.

    Leave a comment:


  • Marrr
    replied
    Originally posted by Agent Orange View Post
    Marrr:

    Check the labels on the two 3.5 inch floppies above. They don't say "PC-DOS". This particular set was made by Microsoft. (You have to almost stand on your ear to see it, but they do say "Copyright Microsoft 1991". These disks seem to have been licensed to IBM, however. As to your question, who knows? I would bet yes, they were available. At that time almost all popular softrware was available in the 5.25 inch format. As a mater of fact, I remember purchasing a 5.25 inch PC-DOS boxed edition back in early 90's, when a friend asked me put a pc together. Do you remember that there was a period when some boxed software came with both, the 3.5 and 5.25 variety?
    Well, you just forced me to dig out my IBM DOS 5.0 box, and it was painful as I'm getting ready to move and almost all of my vintage stuff is temporarily very hard to access
    Anyway, yes, my IBM DOS 5.0 disks also have both "Copyright International Business Machines" and "Copyright Microsoft". And no wonder: for all those years DOS was mostly being developed by Microsoft, IBM only did minor modifications.
    And, as I already mentioned, there was no PC DOS 5. There was PC DOS 3.30, but the following versions of this product were named IBM DOS 4 and IBM DOS 5, the name "PC DOS" was reintroduced with version 6.

    And yes, I very well remember the 5.25"->3.5" transition. Random fact: here in Poland in early 1990s genuine IBMs were pretty rare, the market was totally dominated by clones, 5.25" diskettes were still more popular, so local OEMs (eg. Optimus and Protech) were selling (bundled with hardware) their MS-DOS 5 versions in 2 x 5.25" 1.2MB variant.
    But it's also fact that at the same time all new IBM PCs^H^H^H PS/2s by default only had 3.5" drives, and IBM DOS was intended primarily for IBM hardware, so why should they provide 5.25" option?

    Leave a comment:


  • vwestlife
    replied
    I'm not sure about 5.0x, but I do know that IBM PC DOS 6.x came on 3.5" 1.44 MB disks and included a coupon to get a free set of 3.5" 720K installation disks. 5.25" disks of either density did not appear to be available from IBM.

    MS-DOS 6.x came on 3.5" 1.44MB disks and included a coupon to get a free set of either 5.25" 360K or 3.5" 720K installation disks. I actually used this coupon once and got myself a free set of MS-DOS 6.22 on about twelve or thirteen 360K floppies (yes, including all the Windows utilities which likely wouldn't even be applicable to a machine needing 360K floppies).

    And finally, IBM's PC DOS 7.0 and 2000 came on either 3.5" 1.44MB floppies or a CD-ROM (!) and did not include any coupon for a set of 720K floppies.

    Leave a comment:


  • Agent Orange
    replied
    Marrr:

    Check the labels on the two 3.5 inch floppies above. They don't say "PC-DOS". This particular set was made by Microsoft. (You have to almost stand on your ear to see it, but they do say "Copyright Microsoft 1991". These disks seem to have been licensed to IBM, however. As to your question, who knows? I would bet yes, they were available. At that time almost all popular softrware was available in the 5.25 inch format. As a mater of fact, I remember purchasing a 5.25 inch PC-DOS boxed edition back in early 90's, when a friend asked me put a pc together. Do you remember that there was a period when some boxed software came with both, the 3.5 and 5.25 variety?

    Interesting topic.

    Leave a comment:


  • Marrr
    replied
    Originally posted by mbbrutman View Post
    I'm a big fan of IBM DOS 5. Unfortunately, all of my copies seem to be on 5.25" diskettes, not 3.5s.
    Was IBM DOS 5 even available on 5.25" diskettes? It would be logical if it wasn't, after all this was in the PS/2 era, when IBM was pushing 3.5" drivers pretty hard.
    Yes, I know about 5.25" variants of MS-DOS 5, but I've never seen IBM DOS 5 in any other form than 3.5" 720KB.

    Leave a comment:


  • Agent Orange
    replied
    Can't say for sure. I can only guess that they are using IO.SYS & MSDOS.SYS as they appear to be manufactured by Microsoft.

    Leave a comment:


  • Marrr
    replied
    Originally posted by Chuck(G) View Post
    I haven't checked a copy of PC-DOS 5 recently. Are the system files still called IBMBIO.COM and IBMDOS.COM or are they IO.SYS and MSDOS.SYS as in the Microsoft product?
    All the versions of PC DOS/IBM DOS I've seen (including 5.00 and 5.02) have IBMBIO.COM & IBMDOS.COM
    BTW: there's no such thing as "PC DOS 5", as this version was released during the PS/2 era, when IBM distanced themselves from "PC", hence the name "IBM DOS".

    Leave a comment:


  • Chuck(G)
    replied
    Originally posted by Agent Orange View Post
    IBMBIO.COM <=> IO.SYS & IBMDOS.COM <=> MSDOS.SYS. DR-DOS used IBMBIO & IBMDOS.COM.
    Sheesh, I know that--which pairing does the product in question (IBM DOS) use?

    Leave a comment:


  • Agent Orange
    replied
    Just a casual observation - Your IBM "stiffies" appear to be from Microsoft as they are not branded PC-DOS. The disks were copywrited 1991. So, this was slightly prior to the big Microsoft/IBM falling out. Maybe just before the NT/OS2 era when IBM decided to go their own way (just like in the Fleetwood Mac song).
    Last edited by Agent Orange; June 22, 2010, 07:09 AM.

    Leave a comment:


  • Agent Orange
    replied
    IBMBIO.COM <=> IO.SYS & IBMDOS.COM <=> MSDOS.SYS. DR-DOS used IBMBIO & IBMDOS.COM.

    Leave a comment:


  • Minerva10210
    replied
    OK, trying Imageshack here now





    Last edited by Minerva10210; June 22, 2010, 12:35 AM. Reason: Fixed links

    Leave a comment:


  • Minerva10210
    replied
    Originally posted by Agent Orange View Post
    Minerva:

    Let me work on 3.5 those inchs disks - may take a few days. I'm assuming that you do not have a 5.25 inch floppy?
    I do actually have a 1.2MB 5" drive, so it's not an issue at all. I presume one would just have to fiddle around a bit to make sure that one copies all the correct files onto the 3" floppies.

    Thanks a lot!

    PS. as a side note, I noticed that here in South Africa we created a name for 3" disks, we call them Stiffies here, and the 5" we call floppies. A bit of useless info

    Leave a comment:


  • Chuck(G)
    replied
    Originally posted by krebizfan View Post
    A few minor differences in DOS 5. Microsoft still has a web page devoted to the differences. http://support.microsoft.com/kb/75169
    If Iceland or 122 key keyboards matter, one needs the IBM PC DOS 5.

    In earlier versions of PC-DOS, the differences included GW-Basic versus BASICA and PC-DOS would only recognize hard disks formatted by PC-DOS.
    I haven't checked a copy of PC-DOS 5 recently. Are the system files still called IBMBIO.COM and IBMDOS.COM or are they IO.SYS and MSDOS.SYS as in the Microsoft product?

    Leave a comment:

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