Oden Eriksson <[EMAIL PROTECTED]> writes: > On Thursdayen den 31 January 2002 18.27, Pixel wrote: > > "Oden Eriksson" <[EMAIL PROTECTED]> writes: > > > Hi fellow cookers... (maybe slightly off topic...) I'm trying to figure > > > out how to extract the El Torrito sector from a bootable CDROM. Anyone > > > knows how to manage this? -- > > > > you mean the floppy image? it must be on the ISO filesystem, so just look > > for something 1.44MB or 2.88MB ? > > Well, AFAIK the standard is not limited to floppy sizing. I suspect the NT4 > el torrito sector contains those three startup floppies. There must be a way > to check and rip just those particular sectors.
more info (from http://www.phoenix.com/PlatSS/PDFs/specs-cdrom.pdf): to find the catalog (eg: boot.cat), look at the number at offset 0x8847 (0x47 + 17 * 2048) of the cdrom. On the mdk 8.1 image, i have 0x838. So now go to offset 0x41c000 (0x838 * 2048). This is the "Validation Entry". At offset 0x41C021, there is 2 which means 1.44MB floppy emulation. At offset 0x41C028, there is 0x839, so the boot floppy is at 0x41C800.
