Good day: You do not HAVE to use the SYSLINUX loader. I've been successful using the El Torito standard (with 1.44 or 2.88 MByte) boot sectors on CD's. The trick is getting a proper floppy disk image file.
I did it this way because I've also been fiddling with MS-DOS boot CD's and haven't played with ISOLINUX for those yet. These CD images can be created from the boot floppy image file using mkisofs -b imagefile.img -c catalog ... I got the 2.88MByte boot disk image I'm using from www.fdos.org/bootdisks. I mounted the image file (using a program called VFD on Windows XP), configured it the way I wanted it, and then used it to build an ISO file for a bootable CD. I'm actually building these on Windows XP, but the basic process is the same. You can put a CD-ROM driver in config.sys and access the rest of the CD as a seperate drive letter. The computer basically acts like it was booted from a floppy drive and the floppy disk image ends up mapped as A:, not C: (which is where the boot device is if you use the ISOLINUX boot loader). No special drivers are required at all...it's just like booting from a floppy. You don't even need a CD-ROM driver unless you want to access more than 2.88 MBytes! :-) You don't need eltorito.sys or anything else that you would not need for booting from a floppy disk. No ISOLINUX, no ISOLINUX.CFG... Hope this helps. Mark > Michael schreef: > > > I have a CD ISO image I keep of useful free software programs for > > Windows. I was wanting to use the spare space on the discs to make a > > FreeDOS (and maybe Memtest) rescue disc. I've downloaded the FreedOS > > CD ISO. Do I just copy this ISO to a directory and copy the files from > > my other ISO into that directory? I'm working under Linux here. Is > > there anything special I need to do when remaking the ISO in order to > > make disc bootable into FreeDOS? Any tips would be appreciated. Thanks. > > Nothing difficult. However, FreeDOS cdrom *is* a bootable cdrom, and > like Linux distributions, uses ISOLINUX bootloader for the installation > cdrom. > You can use MKISOFS under Linux, and point to isolinux/isolinux.bin as > bootloader. > > layout is basically this: > AUTORUN.INF (root of cd, optional) > FREEDOS > ISOLINUX > and then your other programs > > You'll first have to unpack the ISO (or mount it, then copy it to a > writable directory) before adding your other programs and remastering. > > Bernd > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting > Tool for open source databases. Create drag-&-drop reports. Save time > by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. > Download a FREE copy at http://www.intelliview.com/go/osdn_nl > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
