I don't think that's possible with a PS-1. They booted from onboard IBM BASIC, floppy or Hard Disk only.

hotelsinger wrote:

I'm attempting to get an IBM PS-1 486 to boot from the CD drive. Does anybody have a suggestion for a good site to find old bios updates? 😅

Here is another possible way to boot an older 486 based PC from a CD-ROM drive described on this older VOGONs thread. Just using your floppy to set up a CD-ROM boot process. Worked for me with an older DELL PC which did not support boot from CD-ROM.

Hope this helps,

dvwjr

SmartBootManager didn't work for me though. Still failed to boot from CD then.

I spose you could also use a floppy linux system to boot Windows from CD too.

Saw this yesterday, never tried it myself

http://www.raymond.cc/blog/archives/2008/12/0 … ted-using-plop/

another bot ? Posting only to promote his signature ?

Guess so. But nice work of DosFreak finding that PLoP thing.

not a bot, but is certainly someone who selfpromotes

MiniMax wrote:

Guess so. But nice work of DosFreak finding that PLoP thing.

Yeah, if your not using Google Reader you should definetly start and that website I posted should be in your RSS feed.

imma try this PLoP on my 486, hope it likes w2k's ntldr 😀

leileilol wrote:

imma try this PLoP on my 486, hope it likes w2k's ntldr 😀

DOESNT WORK NTFS REQUIRED GODDAMNIT!!

leileilol wrote:

DOESNT WORK NTFS REQUIRED GODDAMNIT!!

You might want to try the PLoP v5.0 boot floppy, no NTFS required.

I did not have access to an old 486 system, so I set up an old 1996 DELL Optiplex GXi 5200M(Pentium 200MHz, DELL BIOS vA06) system to see how either Smart Boot Manger v3.7-1 or the newer PLoP Boot Manager 5.0 would function when attempting to perform a CD-ROM boot. The DELL system has no BIOS support for booting via either a CD-ROM or the USB 1.1 ports, only Floppy, Hard Disk or PnP BIOS (ie Network Boot). The CD-ROM drive was a NEC 1400A 8x drive connected on the secondary ATAPI interface as the Master with no Slave. The test boot CD-ROM was a factory-pressed original Microsoft OEM copy of Windows XP.

Test Setup #1:

Create a Smart Boot Manager v3.7-1 (non-DOS) boot diskette 3.5" 1.44MB
Target drive "A:"

SBMINST.EXE -d 0

Smart Boot Manager v3.7-1 Main Menu from boot floppy:

Source: SourceForge Smart Boot Manager Download page

To boot CD-ROM:

1.) Highlight to select the (a) CD-ROM from Main Menu
2.) Hit TAB key to access secondary Menu
3.) Highlight "Boot it" menu entry
4.) Hit <Enter>

If an ATAPI CD-ROM device can not be found on the Primary or Secondary interface, it may possibly be found on the little used ATAPI Tertiary or Quaternary interfaces. The non-proprietary Creative SoundBlaster-16 had the ATAPI CD-ROM interface default to the Tertiary settings. The Smart Boot Manger v3.7-1 does have a menu option to input the alternate Tertiary and Quaternary ATAPI interfaces for CD-ROMs which are not recognized upon using the boot floppy diskette. The table below would have the starting I/O port addresses for all four of the ATAPI interfaces. (Example: SB-16 Tertiary = 01E8h,03EEh)

ATAPI I/O and IRQ interfaces for devices (including CD-ROMs):

1
2     Interface number    CS0-decode    CS1-decode     IRQ number 
3---------------------------------------------------------------------------
4
5            1            01F0h-01F7h   03F6h-03F7h    14 
6            2            0170h-0177h   0376h-0377h    15 or 10 
7            3            01E8h-01EFh   03EEh-03EFh    12 or 11(Creative SB) 
8            4            0168h-016Fh   036Eh-036Fh    10 or 9 
9

For the Sound Blaster models with the proprietary Creative, Panasonic, Sony or Mitsumi CD-ROM interfaces the possible I/O ports are listed below: Not sure that Smart Boot Manager 3.7-1 can use SoundBlaster attached non-ATAPI CD-ROM drives.

Sound Blaster 16 (non-ATAPI) CD-ROM I/O Port assignments

1
2  Supported    Sound Blaster 16
3---------------------------------------------------
4   IRQs:        5 (Default)
5                2, 7, 10
6
7   I/O Ports:   Sound DSP, MIDI and Mixer:
8                220h (Default), 240h, 260h, 280h
9
10                Games Interface/Joystick:
11                200h (Default)
12
13                MPU401 External MIDI Interface:
14                300h (Default), 330h
15
16                Creative Proprietary or Panasonic or SONY CD-ROM:
17                230h, 250h, 270h, 290h
18
19                Mitsumi CD-ROM (multi-CD versions):
20                310h, 320h, 340h, 350h
21
22                OPL3 Compatible:
23                388h

Results:

The Smart Boot Manager v3.7-1 failed to boot the Windows XP CD-ROM which was in the NEC 1400A 8x CD-ROM drive. Error message was "0xAA". Repeated attempts to boot the Windows XP CD-ROM failed.

Looks as if the Smart Boot Manager v3.7-1 fails to boot a CD-ROM on some systems as forum member leileilol described and this particular test confirms. I have had an older DELL tower 5120 with a CD-ROM (caddy style) which did boot with Smart Boot Manager v3.7-1... Hit or miss ?

Test Setup #2:

Create a PLoP Bootmanager v5.0 (non-DOS) boot diskette 3.5" 1.44MB
Target drive "A:"

Download the plpbt-5.0.zip file from the 'Source:' PLoP Bootmanager page listed below.
Source: PLoP Linux: PLoP Boot Manager v5.0

Download RawWrite for Windows version 0.7 by John Newbigin

Use the "plpbt.img" file with RawWrite v0.7 to create the (non-DOS) floppy boot diskette.

PLoP Bootmanager v5.0 main menu from boot floppy:

Source: PLoP Linux: PLoP Boot Manager v5.0

To boot CD-ROM:

1.) Highlight "CDROM" menu entry
2.) Hit <Enter>

Results:

The PLoP Bootmanager v5.0 boot floppy successfully booted the Windows XP CD-ROM on the same hardware as was described above for the Smart Boot Manager v3.7-1 test. During the beginning of the PLoP v5.0 CD-ROM boot process, a message that PLoP was waiting for the NEC 282 to spin up was displayed, then the Windows XP CD-ROM boot process began ('hit any key...') As a further test, the PLoP v5.0 boot floppy was also tested on a 1998 DELL GxPro dual Pentium Overdrive 333MHz system and successfully booted the same Windows XP CD-ROM.

Looks like we have a new standard solution thanks to Dosfreak's eagle eyes and the coding skill of the PLoP Bootmanager author, Elmar Hanlhofer. Looks as if v5.0 is the first formal release of the PLoP Boot Manger as of January 2009.

Some ATAPI interface exceptions for certain 80486 based systems:

Note to IBM PS/1 owners: […]
Show full quote

Note to IBM PS/1 owners:

The majority of IBM PS/1 computers have motherboards that use IRQ 15 for
some motherboard function. What this means is that a secondary IDE card
will not work in the system. (Not all of the IBM computers will experience
this situation. If you do have a PS/1, contact IBM and inquire as to the
possibility of installing an IDE CD-ROM drive into your particular system.)

Note to 486 SX owners:

Many early 486 SX computers will not allow an IDE CD-ROM drive in the
system. The drivers may load, but the machine will experience strange
slow downs, or a wide variety of errors and General Protection Faults in
Windows. This is most evident on certain Packard Bell machines, though
any SX motherboard could be affected.

Source: Turtle Beach Tech Doc

Hope this helps,

dvwjr

Edit: Re-tested with PLoP v5.0 release, changed text from 'rc17' to release.

Nice to see that it works. Thanks for posting your results!

That's great, thanx! 😁