[syslinux-announce] Syslinux 3.81 released

H. Peter Anvin hpa at zytor.com
Fri May 29 14:19:21 PDT 2009

Hi everyone,

I have pushed out Syslinux 3.81 to the usual places.

Again, special thanks to my employer, Intel, for letting me spend time
working on this stuff ;)


Syslinux 3.81 is primarily a bug fix release.  The main new features
are halt-on-idle support and some features to isohybrid, including the
ability to boot from an image written to a partition.

Changes in 3.81:
        * Shuffler: fix bug in real-mode entry.  This affected a
          number of modules, probably in relatively unimportant ways,
          but it completely broke linux.c32.
        * Improved performance.
        * Attempt to halt the processor while idle.  This can cause
          bad reponsiveness when using a serial console especially for
          automated input; if that ends up being a problem, use the
          new "NOHALT 1" configuration command.
        * linux.c32 now suppresses all messages if the "quiet" flag is
        * isohybrid: add a variety of options, and a help message.
        * ISOLINUX: fix booting in hybrid mode when CBIOS is used.
          This unfortunately means that the isohybrid handoff protocol
          has changed, so the isohybrid utility must version-match
        * Drop support for ACPI 3 extended memory flags.
        * Menu system: don't set the autocr flag on the serial
        * altmbr: fix handling of logical partitions.
        * altmbr: cap at 439 bytes so the partition select byte isn't
          part of the file.

Title:          syslinux
Version:        3.81
Entered-date:   2009-05-29

Description:    SYSLINUX is a collection of boot loaders for the Linux
                operating system which operates off Linux ext2/3
                filesystems, MS-DOS FAT filesystems, network servers
                using PXE firmware, or from CD-ROMs.  The FAT
                filesystem version can be installed from DOS, NT, or

                It includes a sophisticated API for add-on "COM32"
                modules, including a significant subset of the
                standard C library.

                It also includes MEMDISK, a tool to boot legacy
                operating systems from nontraditional media like PXE
                or CD-ROM.

                This version includes gPXE, to allow accessing network
                files via other protocols than TFTP.

Keywords:       syslinux pxelinux isolinux extlinux msdos boot loader
                floppy install network ext2 ext3 pxe iso9660 cdfs
                memdisk com32
Author:         hpa at zytor.com (H. Peter Anvin)
Maintained-by:  hpa at zytor.com (H. Peter Anvin)
Primary-site:   ftp.kernel.org /pub/linux/utils/boot/syslinux
                3794892 syslinux-3.81.tar.gz
                4699863 syslinux-3.81.zip
Platforms:      DOS or Linux to install.  Linux, perl and NASM 0.98.39
 		or later required to build from source.  A future
		version will require NASM 2.00 or later.
Copying-policy: GPL, MIT

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