[syslinux] Question of syslinux chainloading

Adan Calderon adancalderon at gmail.com
Thu Apr 4 08:53:50 PDT 2019

So when you boot from only your hard drive attached, it is the primary
and only drive.
It loads the master boot record that load the NT Loader boot code that
is then configured to load the operating system from the primary
partition on the primary drive.

When you boot from the USB drive, you make it the Primary drive.  You
then tell it to load the MBR fromt the secondary drive.  The secondary
drive then trys to load the NT operating system from the configuration
file.  That file would probably still say the operating system is on
the primary drive's first partition, but this would no longer be true.

This is what I understand.

On Thu, Apr 4, 2019 at 11:30 AM Lu Wei <luweitest at gmail.com> wrote:
> On 4/4/19, Adan Calderon <adancalderon at gmail.com> wrote:
> > Lu Wei,
> >
> > What Hard drive are you also trying to boot?  The first and only fixed
> > drive inside a computer?
> > If so would the line to boot a local HD not be:
> >
> > MENU LABEL Local operating system in harddrive (if available)
> > kernel chain.c32
> > append hd0
> >
> >
> The hard drive I want to boot is the only fixed drive in the computer,
> is NTFS and can boot normally to Windows XP, with native ntldr.  Since
> the usb-disk is formatted as USB-HDD, when booting from usb, hd0 is
> usb-disk itself, and will return to syslinux boot menu; I tried modify
> hd0 to hd1 in your line, but same as before. The screen shows:
> Booting...
> Error loading operating system_
> Then it halts and can only press ctrl-alt-del.
> --
> Regards,
> Lu Wei


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