SDL on usb stick

[Jose]

Lennart Sorensen wrote:
> On Wed, Apr 04, 2007 at 07:41:21PM -0400, D. Hugh Redelmeier wrote:
>   
>> I think that there is (after googling a bit).  But it does not say
>> what the contents of the medium should look like:
>>   http://www.usb.org/developers/devclass_docs/usb_msc_boot_1.0.pdf
>>
>> I always assumed that you organized a flash memory like a hard disk
>> partition OR like a partition.  The first sector would be a Boot
>> Record and would contain a 512-byte boot block.  I'm more confused now
>> that I've looked it up.
>>     
>
> Well sometimes it is treated like a big floppy, and other times like a
> hard disk.  So sometimes you get partitions and sometimes you don't.
> Some bios's have settings for USB Zip, USB Floppy, or USH HD for boot,
> which affects which setup it will expect and boot from.
>
>   
>> Of course bootable CD's don't look like that.  They have a virtual
>> floppy image that the BIOS can boot from and make available to the
>> boot code etc. through INT 13.  As a virtual floppy, it is
>> allowed to be 2.88M, even though few real floppies were that size.
>> (Apparently it could also emulate a hard drive).
>>   http://en.wikipedia.org/wiki/El_Torito_(CD-ROM_standard)
>>     
>
> Actually floppy emulation isn't used very often anymore.  Now most
> things use el torito no emulation mode, where the whole iso filesystem
> can be read through the bios interface.  This is what isolinux uses, as
> well as all windows installers for NT based windows versions.  Most x86
> linux distributions use isolinux for booting as far as I know.  The
> floppy emulation is just so restrictive in space and very annoying to
> generate so hardly anyone uses it anymore.
>
>   
>> Of course the PC world had to re-invent bootable CDs (1995).  Sun had
>> differently bootable CDs quite a bit earlier.
>>     
>
> Well many unix systems could boot from CD, but they required that the CD
> drive support 512byte sectors, which some scsi cdrom drives did, but
> most do not.  Most do only 2048 byte sectors.
>
> --
> Len Sorensen
> --
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>
>   
Hi Everybody

Kevin's plan did the job, I appreciate all of your responses.

Thanks for your time and help

Happy Easter!!

Jose
--
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