similar to: Checking CRC (of bzImage) before loading

Thanks all, It should be quick, so it will be implemented in C. Maybe I should have stated that I am not an expert in syslinux (intelligent but no expert). I think that I understand the "custom COM32 module" option : I simply have to change the code (and begin by looking into the files that were suggested). As for Peter's suggestion, I am not sure if I understood. Is this an

On 03/19/2014 01:30 PM, Gene Cumm wrote: > On Wed, Mar 19, 2014 at 4:16 PM, Mau Z <zmau1962 at gmail.com> wrote: >> Hi, >> >> I am wondering how to implement the following customer's requirement : >> The system is a stand alone embedded system with no operator (with Linux). >> There is one SSD for the system's usage (and that is where the system loads

On Wed, Mar 19, 2014 at 4:16 PM, Mau Z <zmau1962 at gmail.com> wrote: > Hi, > > I am wondering how to implement the following customer's requirement : > The system is a stand alone embedded system with no operator (with Linux). > There is one SSD for the system's usage (and that is where the system loads > from). > > The requirement is to have a duplication of

Mau Z <zmau1962 at gmail.com> writes: > I am wondering how to implement the following customer's requirement : > The system is a stand alone embedded system with no operator (with Linux). > There is one SSD for the system's usage (and that is where the system loads > from). > > The requirement is to have a duplication of the Linux Image, and that > syslinux

Hi! It's funny, but I was unable to find an answer to my question. I am building an embedded system (x86). I want to install syslinux on a fresh system. So, I am booting from a USB LINUX CD (Ubuntu 12.04 in this case). 1) I must have an ext2 partition (This is my application). 2) I understand that I must have a FAT partition (to install syslinux). Correct ? So, basically I understand that

Hi! I have the same situation, but some more information : 1) I have tried to change the last line to "APPEND root=/dev/sda1", it did not seem to make any difference 2) If I type ENTER at the prompt, syslinux loads the kernel (but with the same results mentioned above). So, clearly I have a problem with my extlinux.conf. Thanks Mau On Thu, Jan 16, 2014 at 10:33 AM, Mau Z

Hi I understand you (mostly). 0) How do i "install the MBR code as well and to activate your partition." 1) "mount /dev/sda1 /mnt" -->> successfully completed. 2) "mkdir /mnt/extlinux" -->> successfully completed. 3) "extlinux --install /mnt/extlinux" -->> does not work. Funny, but it it seems that there is no such thing as

Thanks but I am still in the same spot : 1) I have created a partition (ext2 with GParted). 2) Now what ? I was thinking that I should install syslinux (the bootloader). All the examples say something like "syslinux --directory /boot/syslinux/ --install /dev/sdb1" but this does not make any seance, because the is no /boot on the system. I have tried it anyways, but the

Hi! I was looking to download EXTLINUX in the following page : http://www.syslinux.org/wiki/index.php/Download But I do not see that it can be done. It is said that "The SYSLINUX download includes PXELINUX, ISOLINUX and MEMDISK as well." But, there is no word about EXTLINUX Please, advise Thanks Mau

> On Wed, Jan 15, 2014 at 1:54 AM, H. Peter Anvin <hpa at zytor.com> wrote: > > > On 01/14/2014 10:34 AM, Mattias Schlenker wrote: > > > Am 14.01.2014 17:48, schrieb Mau Z: > > >> > > >> prompt 1 > > >> DEFAULT linux > > >> LABEL linux > > >> SAY Now booting my first extlinux > > >> KERNEL /bzImage

On Mar 19, 2014 5:22 PM, "H. Peter Anvin" <hpa at zytor.com> wrote: > Or we could make the Linux loader (load_linux.c) throw an error on a bad > CRC, which is probably a good idea anyway. Then the ONERROR option can > be used for the fallback. > > -hpa Sounds like an excellent idea. Should linux.c32 get an override option (in case of a non-compliant

Hello, Is there a function to check a bzImage CRC ? If (ImageCRC("/bzImage") == -1) Load_kernel("/BACKUP/bzImage") or what else Thanks Regards Johann

On 6/7/19 10:48 PM, H. Peter Anvin via Syslinux wrote: > On 6/7/19 10:34 PM, H. Peter Anvin via Syslinux wrote: >> On 6/7/19 10:25 PM, H. Peter Anvin via Syslinux wrote: >>>> >>>> However, the CRC polynomial for zlib and the Linux kernel should both be the >>>> same: 0x04c11db7. >>> >>> I just double-checked, and the CRC tables are

On 6/4/19 4:05 AM, Gene Cumm via Syslinux wrote: > On Sat, May 25, 2019 at 8:33 AM Johann Obermayr via Syslinux > <syslinux at syslinux.org> wrote: >> >> Hello, >> >> Is there a function to check a bzImage CRC ? >> >> If (ImageCRC("/bzImage") == -1) >> Load_kernel("/BACKUP/bzImage") or what else >>

On 6/7/19 10:25 PM, H. Peter Anvin via Syslinux wrote: >> >> However, the CRC polynomial for zlib and the Linux kernel should both be the >> same: 0x04c11db7. > > I just double-checked, and the CRC tables are indeed identical. I was pretty > sure, because I wrote that code a long time ago... > Ah, it seems that zlib's CRC32 returns the binary inverse of the

Thanks all, I did find extlinux in "my syslinux tarball" (I think that I understand my confusion now - I will explain at the end). So, now almost everything is fine...... Clearly my extlinux.conf is working (I can see my output on the console (SAY XXX)) I have a bzImage + rootfs.tar I tried : 0) mount /dev/sda1 /mnt/MyMountForSda1 -->> success 1) cd /mnt/MyMountForSda1

Hi, I am using qemu for testing new versions of syslinux before installing on an embedded computer. Everything works fine under qemu (1.5.0), so I updated extlinux from 4.06 to 5.11-pre3 on the computer. I found that the autostart's timeout does not work. The timeout value is correct but nothing happens. It worked well with extlinux 4.06... I tried with extlinux 5.01, 5.10, 5.11-pre3 and

Hello, At the boot prompt ALLOWOPTIONS 0 is only applied to implicit kernels and not to labels. For configuration which want to allow selection, but prevent customization of the kernel command line, this behaviour is bad. Also the IMPLICIT 0 is applied to both the boot prompt and configuration setting (like DEFAULT); but one could argue that only the command supplied at the prompt make sense to

Hallo, I wrote am 26.06.13: > Running "pxelinux": more problems than with 5.10. > 5.00-pre6: all worked fine > 5.10: the start menu (GUI) wasn't shown; "tab" showed the labels, and > the textual menus. Invoking the labels worked. > 6.00: no GUI start menu. "tab" showed the textual menus. Invoking > them seems to do nothing (after some

Hi I'm using syslinux 5.01 and is installing our bootloader using "extlinux --install /boot". In the extlinux.conf I've specified that the kontron_wdt.c32 program should boot another label once it has been executed but it never calls the second label. Here's my extlinux.conf: default wdt timeout 5 prompt 1 label linuxfoo kernel /vmlinuz append root=/dev/sda2 #.... more