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diff --git a/core/localboot.c b/core/localboot.c index 0b8769e4..30bfb272 100644 --- a/core/localboot.c +++ b/core/localboot.c @@ -63,7 +63,6 @@ __export void local_boot(int16_t ax) ireg.eax.w[0] = 0; /* Reset drive */ __intcall(0x13, &ireg, NULL); - memset(&ireg, 0, sizeof(ireg)); ireg.eax.w[0] = 0x0201; /* Read one sector */ ireg.ecx.w[0] = 0x0001; /* C/H/S = 0/0/1 (first

A bug in command localboot was introduced in version 6.03. This bug was created because of inserting memsets in core/localboot.c. The third memset before /* Read one sector */ clears the field ireg.edx, which was assigned earlier and is required for subsequent __intcall0x13. So localboot type works as localboot 0. I think, this third memset in core/localboot.c is useless and excessive.

Can you detail what bug that introduce ? Behavior with the current code and with your change proposal ? That's pretty unclear for me. Thanks ! Le mer. 16 janv. 2019 ? 07:46, Victor Sologoubov via Syslinux <syslinux at zytor.com> a ?crit : > > A bug in command localboot was introduced in version 6.03. > This bug was created because of inserting memsets in core/localboot.c. > The third memset before /* Read one sector */ clears the field ireg.edx, > which was assigned...

I created a bootable usb flash with boot menu. One of items was "Boot from hard drive" with command "localboot 0x81". This item worked when this usb flash was prepared with syslinux 6.02. And it stopped working when the flash was prepared with syslinux 6.03. The message was Booting from local disk... Boot error I extracted the source code, investigated, changed, compiled

Can you share the patch you used ? Le lun. 21 janv. 2019 ? 08:46, Victor Sologoubov via Syslinux < syslinux at zytor.com> a ?crit : > I created a bootable usb flash with boot menu. One of items was "Boot > from hard drive" with command "localboot 0x81". This item worked when > this usb flash was prepared with syslinux 6.02. And it stopped workin...

On Mon, Jan 21, 2019 at 3:37 AM Victor Sologoubov via Syslinux <syslinux at zytor.com> wrote: > > diff --git a/core/localboot.c b/core/localboot.c > index 0b8769e4..30bfb272 100644 > --- a/core/localboot.c > +++ b/core/localboot.c > @@ -63,7 +63,6 @@ __export void local_boot(int16_t ax) > ireg.eax.w[0] = 0;...