search for: diskboot

...eed to make a network installation and the Intel network card should be recognized before. I found the following script on the net and try it. ------------------------------------------------------------------------ ------------------------------ wget http://my_web_server/CentOS/5.2/x86_64/images/diskboot.img cp diskboot.img diskboot.orig.img mkdir diskboot_mnt mount -o loop diskboot.img diskboot_mnt mkdir initrd_extracted cd initrd_extracted gunzip < ../diskboot_mnt/initrd.img | cpio -i --make-directories cd .. mkdir modules_extracted cd modules_extracted gunzip < ../initrd_extracted/modul...

...prepping for a branch)? Branch core-diskstart-chkerr-for-hpa fixes DS in the (future) situation that copying ldlinux.sys results in DS not being 0. Segment 0 contains the error message string we need in case of failure and DS !=0 would prevent this error message from properly displaying. Branch diskboot-comment-for-hpa adds some comments to diskboot that I think will be handy for anyone re-using diskboot.inc. Branch rosh_for_hpa fixes a bug in rosh's ls that could hang the PC. I found that using 'ls -l' with a directory option in certain manners caused a failure as an error check was...

Hi all, I was using grub2 for booting Archlinux x86_64 in my GPT Internal HDD (/dev/sda) then I switched to syslinux/extlinux. It was working fine but suddenly it staring showing "Boot Error" message on screen. I googled for a solution and tried all syslinux versions from 4.04-pre4 down to 4.03-stable but non of them worked. I don't know what suddenly changed caused this

...I usually use DHCP to install CentOS boxes via kickstart. For a first install, I boot the machine on the CentOS first CD, I type "linux ks" at the prompt and the rest is automatic. I have already use USB pen to boot some servers that don't have CD-ROM drive and all went well with the diskboot.img of CentOS 5.1. But the diskboot.img of CentOS 5.2 seems to be unable to deal with the kickstart parameters passed by DHCP. The embedded DHCP client does not get the "filename" option value and seems to have problems with the DNS server (even if the "next-server" is correctl...

...all via ftp. Well I have had problems copying files from this distro. I had to use the /c option in xcopy to get past the problem files.. A few examples are: The following files in the image directory of disk 1 has 'File creation error - The parameter is incorrect.": README boot.iso diskboot.img pxeboot/README My screen buffer is only 400, so I missed any errors in the first 1500 files. And I think there was one earlier (the reason why I had to add the /c option). On I think CD 3 in the Centos/RPMS the file tix.8.1.4-98.i386.rpm had a 'File creation error -Date error (cyclic...

...d at how syslinux works and I see that it adds the files LDLINUX.SYS and LDLINUX.C32 to the FAT filesystem -- I can easily emulate this bit in the plugin since we are already creating a full FAT32 filesystem on the fly. However the problem is that syslinux also creates a boot sector [ie. core/bios/diskboot.inc in the syslinux source] and I suppose it must encode the offset of the LDLINUX.SYS file. I haven't quite worked out the details. The question, is there a way to simulate the work that syslinux does in a reasonably supportable way that won't break on future updates of syslinux? Rich....

With the decreasing price of USB Flash Memory Drives, I was wondering how I would go about creating a USB Flash Drive that could be used the same as CD 1 to install CentOS on my servers. Has anyone done this, and if so, can you tell me the procedure to make this work? Thanks!

I have found something called: diskboot.img at: http://www.gtlib.gatech.edu/pub/centos/4/os/i386/images/ But it is 6Mb large (6411Kb) instead of 1411Kb And the rawreadwrirewin program gets an error on it when run on NT. On Win2000, it makes a diskette that fails to boot.. So really, HELP!!!! I 'just' discovered that my ol...

I have a Laptop with 6G HD, there are FD and CD-ROM port to external devices. But I only have a external floppy drive, no cd-rom. Now I boot from 1fd linux and make HD as partition, next I want to install FC4 on this laptop. But FC4 CD only support CD-ROM or USB memory, I tried to write diskboot.img to /dev/hda1 with dd command, I found all files in image bootdisk.img in /dev/hda1, but when I boot laptop, HD isn't booted, no anything on screen. It is possible to boot HD after using cat MBR.bin > /dev/hda Thanks for your suggestion.

Well, we wanted to put an install on a USB key. Neither I nor the other admin was amused by the singing and dancing that the wiki offers - and just *why* is it that syslinux is broken? At any rate, I did some googling, and found <http://www.pendrivelinux.com/>, and I ran this installer. Ok, it has some bugs: a) I had several .isos, and it *insisted* on grabbing the first one,

...; When the partition in question was formatted as FAT32, SYSLINUX's installer puts (bootable) > code within the VBR That being the few hundred bytes of difference between ldlinux.bin and ldlinux.sys (minus the nulls for the ebpb, and the all-nulls second 512-bytes, etc), and whose source is diskboot.inc (thanks again Gene). > and puts one or two files (including at least > "ldlinux.sys", a file) onto the filesystem's data area. Yup. > the SYSLINUX'S installer for FAT32 first puts "ldlinux.sys" within the data area and then puts the corresponding (bootabl...

Hi Syslinuxers, I am trying to understand the basic load chain in fat32 and ext4. I dug into the assembly for MBR, which is pretty straightforward: 1. Find boot partition (or use the pre-defined one at byte 440 for altmbr.bin) 2. Load the first 512-byte sector of the partition (VBR for fat32, Block Group 0 padding for ext). 3. Execute that code The code that is loaded, however, has to be too

> You might want to read Wikipedia's articles about "FAT32" and "Design of the FAT file system", Good pointer. I spent far far too long on that page figuring out how fat32 is designed. But the reserved sectors, there is the key. > reserved sectors Right! Immediately after the FSIS before the FAT.And it usually is 32 sectors for fat32. Take off the VBR and the FSIS,

...VBR (a specific byte?) to indicate which > block > > contains first 512 bytes of ldlinux.sys > > It's 8 bytes for a 64-bit address located at the labels "Sect1Ptr0" > and "Sect1Ptr1". These are NOT at fixed offsets and might move based > on revisions of diskboot.inc. > That works. I will read it. > I'd suggest against trying to make a script to install. I have been looking at trying to leverage the installation without the installer. How did you know? :-) If you do that, you'd need to have detailed knowledge of how some of these > st...

Thanks for the response, Gene. Much appreciated. I didn't get all of it; mind if I follow on below? ldlinux.sys is ldlinux.bin without the VBR (Volume Boot Record) code. > Makes sense. > > 1. Where is the code that goes in the VBR or Block Group 0 padding? > > diskboot.inc. > which appears to be included in diskstart.inc. I will have to dig in and see how this all gets compiled (pointers always appreciated :-) ). An install on Linux (before I run "syslinux --install") actually doesn't have ldlinux.sys or ldlinux.bin anywhere. Are they embedded...

Gene, thanks for doing "Reply-All". I only get digest, so this keeps me in the loop. Appreciated. > which appears to be included in diskstart.inc. I will have to dig in and > see > > how this all gets compiled (pointers always appreciated :-) ). > > Yes. > Is the build process documented? Or am I just going to have to plod through the makefiles? > As Ady said,

...e syslinux.cfg file, present menu, and eventually execute a > linux kernel. I assume that is the job of ldlinux.sys and the various .c32 > modules. ldlinux.sys is ldlinux.bin without the VBR (Volume Boot Record) code. > 1. Where is the code that goes in the VBR or Block Group 0 padding? diskboot.inc. > 2. What does it execute? Does it just find the ldlinux.sys and execute it? Set up the basic environment, load blocks of ldlinux.sys, check integrity (weakly but works well enough) and jump to a further point. The installer patches in a block map of ldlinux.sys into the VBR plus ldlinux...

...s PXE installs to an existing windoze ris server. Create the following folder structure on RIS Server: RemoteInstall\Setup\English\Tools\PXELinux\i386\templates\ RemoteInstall\Setup\English\Tools\PXELinux\i386\templates\pxelinux.cfg\ >From the Centos images directory, extract contents of 'diskboot.img' into the templates folder. Rename 'syslinux.cfg' to 'default' and move to ..\templates\pxelinux.cfg\ (edit the default file to include your site configuration/ks file) Copy /usr/lib/syslinux/pxelinux.0 from Centos 4.2 and move to ..\templates\ Create 'pxelinux.sif...

...ing kickstart i tried many thing from how to's and tutorial web pages but nothing worked ;( Here is my USB key tree : |-- CentOS | |-- all my rpms | `-- last rpm |-- TRANS.TBL |-- boot.cat |-- boot.msg |-- custom.iso |-- general.msg |-- images | |-- README | |-- TRANS.TBL | |-- boot.iso | |-- diskboot.img | |-- minstg2.img | |-- pxeboot | | |-- README | | |-- TRANS.TBL | | |-- initrd.img | | `-- vmlinuz | |-- stage2.img | `-- xen | |-- TRANS.TBL | |-- initrd.img | `-- vmlinuz |-- initrd.img |-- ks | |-- TRANS.TBL | `-- ks.cfg |-- ldlinux.sys |-- memtest |-- options.msg |-- package-ipbx | `-- pac...

Hi, Not sure if this is the right mailing list, but... I have a Linux VM (CentOS 5.4) VM. ?I cloned it with virt-clone, but the clone isn't bootable. ?When I attempt to boot it says: ? Booting from hard diskBoot failed: not a bootable diskFATAL: No bootable device The clone was made with the following command: virt-clone -o centos -n centosclone -f /path/to/new/image.img I've attempted it several times and get the same result. Has anyone seen this or know how to resolve it? Thanks,Dave -------------- n...