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Trying to boot UBUNTU on DELL 8250 with only IBM-DOS. Need floppy to run the CD ROM drive for it.The sbm.bin is 1,474,560b but floppy is only 1.44MB and I get message that disc is too small. Any help would be appreciated...

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closed as too localized by James, jokerdino, htorque, Marco Ceppi Jan 26 '12 at 2:42

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

Please provide more information. You don't need an operating system in order to boot Ubuntu from a CD. That means you don't need any drivers at all. – Jo-Erlend Schinstad Dec 12 '11 at 19:18
@Jo-ErlendSchinstad Really old computers can't boot directly to CD (limitation of their BIOS) so you need to hack around that by booting to floppy and then to CD (from the floppy). Messy but it tends to work. – Oli Dec 12 '11 at 21:38
This question appears to be abandoned, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. :) – James Jan 24 '12 at 13:49

The ext2 file system can get 1.7 MB on a floppy marked as having a 1.44 MB capacity. So, you need to use from DOS a utility like rawrite or maybe NtRawrite to write the image file onto the floppy disc. It does not sound right that you need a floppy to boot from a CD-ROM drive, but that might help get the image written to floppy. For NTRawrite:

ntrawrite -f sbm.bin -d a:
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Excellent answer but the 'ext2' reference does not make sense here since there is an image to be written to disk, no file-system involved. On a side note: If there is a working ubuntu with floppy available, something like dd if=sbm.bin of=/dev/fd0 should be sufficient. – aquaherd Dec 14 '11 at 21:14
@aquaherd No, Sir! That is incorrect. :) A file system is absolutely necessary! (When writing any disc image, a file system is always required. And the file system written to disc is a part of the image. Even boot sectors, et al, are included.) I started with Linux at 0.99 PR 1 (Slackware 1993?) and remember having to do these sorts of things. You use whichever version rawrite you can get to work on your system from DOS. – user8290 Dec 14 '11 at 21:36
ext2's features are irrelevant here. OP just tried to copy a file to existing FAT filesystem on floppy, which naturally won't work. – sendmoreinfo Jan 17 '12 at 13:58
Incorrect: they are relevant when the image was made with ext2. – user8290 Jan 17 '12 at 23:03

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