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When a partition was yielded by a GPT partition iterator,
we follow the protocol documented in syslinux/doc/gpt.txt.
Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
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We will now accept an "fs" option which instructs us to
chain-load whatever partition we were booted from. Not
useful for PXELINUX, for obvious reasons. Can be used
in combination with a "file=" option, to boot something
other than Syslinux.
Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
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Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The built-in default is rarely if ever used anymore and highly
confusing to users. Remove it entirely.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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At least one users really need this, so be nice and provide it...
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Windows RIS has been reported to make inappropriate use of data found
in uninitialized memory. To avoid that, clear memory between
a chainloaded boot sector or NBP and Free Base Memory.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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There are apparently TFTP servers in the field which will send OACK
packets with extra NUL bytes appended at the end. If we find an OACK
packet where the only thing left at some point during processing is
NULs, then just consider the packet processed.
We have reported all TFTP protocol errors as "tsize required", which
is definitely not true anymore. Change error code to 0 (undefined)
and the error string to "TFTP error". When this code gets converted
to C we'll do better.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The command invoked when no keys were pressed for the specified time
(ONTIMEOUT) may be different from the menu item initially selected
when the menu is displayed (DEFAULT or MENU DEFAULT). Unfortunately,
this did not work together with MENU HIDDEN (which is exactly the case
when having a separate ONTIMEOUT command makes the most sense).
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Cap altmbr at 439 bytes, so that the partition select byte is not part
of the file. This means that:
a) updating the altmbr doesn't clobber the configuration;
b) it is easier to simply concatenate the select byte to the file.
This also matches gptmbr behavior.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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libutil would set the autocr flag on the serial console, which really
never was any point -- we already do \n -> \r\n conversion explicitly
in the serial code. This was always very annoying to deal with if the
menu was interrupted.
Furthermore, drop completely unnecessary
initialization/deinitialization routines that completely duplicated
other code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Drop all support for ACPI 3 E820 extended memory attributes. There
are BIOSes in the field that report completely bogus information here,
resulting in no memory at all being detected (we then fall back to
E801 detection, but that is problematic in its own ways.)
There is strong reasons to believe at this point that the extended
memory attributes are not usable in their current form, so drop them
and revert back to simple 20-byte support, including for MEMDISK
spoofing.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add support for setting a variety of options in isohybrid. Also
change the default partition type to 0x17, "Windows hidden IFS", as
that seems to make Windows less unhappy.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Try to HLT the processor during idle. All the events we care about
should have interrupts associated with them, except possibly the
serial console. Try to deal with the serial console by waiting some
time before going into HLT, and giving the user the option of enabling
the serial console interrupt, on the assumption that the BIOS will
simply IRET.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The aim now is for a 3.80 release instead...
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Document additional changes since 3.74.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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