I need help with an ancient DOS problem
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From: root on 11 Dec 2009 11:50 Nearly 20 years ago when I dumped DOS I made some bootable CDs that could boot into DOS 6.0, Newdos, and such. I remember that when I made the bootable CD from a bootable floppy I had to jump through some hoops which included copying (equivalent to dd) the floppy to a file bootimage on the CD. That bootimage had a number of EXE files that I thought would suffice for any future use. Now I want to go back and add something to that bootimage. I don't remember anything about the processes that I used. When I mount the bootable CD I see the following: boot.catalog* bootimage cdrom/ The cdrom directory has lots of stuff that I want to access, but I don't see any way to get to it. I can mount bootimage as fat and I see: attrib.exe* command.com* drvspace.bin* fdisk.exe* format.com* io.sys* msdos.sys* sys.com* xcopy32.exe* autoexec.bat* config.sys* edit.exe* fileman.exe* himem.sys* mscdex.exe* sbide.sys* xcopy.exe* xcopy32.mod* I want to add a few more .exe files to the bootimage. What I am afraid of is that anyone old enough to understand this post will also have suffered the same memory loss as I have. Will anyone help? TIA.
From: philo on 11 Dec 2009 11:57 root wrote: > Nearly 20 years ago when I dumped DOS I made some > bootable CDs that could boot into DOS 6.0, Newdos, > and such. I remember that when I made the bootable > CD from a bootable floppy I had to jump through some > hoops which included copying (equivalent to dd) the > floppy to a file bootimage on the CD. That bootimage > had a number of EXE files that I thought would suffice > for any future use. > > Now I want to go back and add something to that bootimage. > I don't remember anything about the processes that I used. > When I mount the bootable CD I see the following: > boot.catalog* bootimage cdrom/ > > The cdrom directory has lots of stuff that I want to > access, but I don't see any way to get to it. I can > mount bootimage as fat and I see: > attrib.exe* command.com* drvspace.bin* fdisk.exe* format.com* io.sys* msdos.sys* sys.com* xcopy32.exe* > autoexec.bat* config.sys* edit.exe* fileman.exe* himem.sys* mscdex.exe* sbide.sys* xcopy.exe* xcopy32.mod* > > I want to add a few more .exe files to the bootimage. > > What I am afraid of is that anyone old enough to understand > this post will also have suffered the same memory loss > as I have. Will anyone help? > TIA. may have been WinImage http://www.winimage.com/winimage.htm
From: Freeballer on 11 Dec 2009 21:43 On 12/11/2009 12:57 PM, philo wrote: > root wrote: >> Nearly 20 years ago when I dumped DOS I made some >> bootable CDs that could boot into DOS 6.0, Newdos, >> and such. I remember that when I made the bootable >> CD from a bootable floppy I had to jump through some >> hoops which included copying (equivalent to dd) the >> floppy to a file bootimage on the CD. That bootimage >> had a number of EXE files that I thought would suffice >> for any future use. >> >> Now I want to go back and add something to that bootimage. >> I don't remember anything about the processes that I used. >> When I mount the bootable CD I see the following: >> boot.catalog* bootimage cdrom/ >> >> The cdrom directory has lots of stuff that I want to >> access, but I don't see any way to get to it. I can >> mount bootimage as fat and I see: >> attrib.exe* command.com* drvspace.bin* fdisk.exe* format.com* io.sys* >> msdos.sys* sys.com* xcopy32.exe* >> autoexec.bat* config.sys* edit.exe* fileman.exe* himem.sys* >> mscdex.exe* sbide.sys* xcopy.exe* xcopy32.mod* >> >> I want to add a few more .exe files to the bootimage. >> >> What I am afraid of is that anyone old enough to understand >> this post will also have suffered the same memory loss >> as I have. Will anyone help? >> TIA. > > > may have been WinImage > > http://www.winimage.com/winimage.htm Is it possible these images are password protected? The stars are kind of strange and in winimage/winrar it typically means protected. -- "'Bill Gates can't guarantee Windows, so how in the HELL can you guarantee our safety!' --John Crichton (Farscape)"
From: Joe on 12 Dec 2009 03:38 Freeballer wrote on 12/11/09 18:43: > On 12/11/2009 12:57 PM, philo wrote: >> root wrote: >>> Nearly 20 years ago when I dumped DOS I made some >>> bootable CDs that could boot into DOS 6.0, Newdos, >>> and such. I remember that when I made the bootable >>> CD from a bootable floppy I had to jump through some >>> hoops which included copying (equivalent to dd) the >>> floppy to a file bootimage on the CD. That bootimage >>> had a number of EXE files that I thought would suffice >>> for any future use. >>> >>> Now I want to go back and add something to that bootimage. >>> I don't remember anything about the processes that I used. >>> When I mount the bootable CD I see the following: >>> boot.catalog* bootimage cdrom/ >>> >>> The cdrom directory has lots of stuff that I want to >>> access, but I don't see any way to get to it. I can >>> mount bootimage as fat and I see: >>> attrib.exe* command.com* drvspace.bin* fdisk.exe* format.com* io.sys* >>> msdos.sys* sys.com* xcopy32.exe* >>> autoexec.bat* config.sys* edit.exe* fileman.exe* himem.sys* >>> mscdex.exe* sbide.sys* xcopy.exe* xcopy32.mod* >>> >>> I want to add a few more .exe files to the bootimage. >>> >>> What I am afraid of is that anyone old enough to understand >>> this post will also have suffered the same memory loss >>> as I have. Will anyone help? >>> TIA. >> >> may have been WinImage >> >> http://www.winimage.com/winimage.htm > > Is it possible these images are password protected? The stars are kind > of strange and in winimage/winrar it typically means protected. Depends on the ls options. A star usually means the executable bit is set. The whole thing with the boot image being a floppy image is part of the El Torito bootable CD format. See the El Torito article on Wikipedia. Essentially, the El Torito CD boot spec allows to emulate a floppy. For that, the boot image has to be exactly the size of a floppy (1.44MB, or 2.88 max.) cdrecord can create the bootable cds with a floppy boot image. -Joe
From: Jasen Betts on 12 Dec 2009 05:40
On 2009-12-11, root <NoEMail(a)home.org> wrote: > Now I want to go back and add something to that bootimage. > I don't remember anything about the processes that I used. > When I mount the bootable CD I see the following: > boot.catalog* bootimage cdrom/ mtools cdfs may be useful too unless there's another way to extract an eltorito image. "eltorito" is probably the word you want to search for. |