similar to: "isolinux.bin missing or corrupt" when booting USB flash drive in old PC

On 03/18/2017 01:18 AM, Ady Ady via Syslinux wrote: > Some of the things you should / could (re)test / (re)try: > > _ Verify the md5sum of the ISO image. SHA256 verified for downloaded image and for contents of USB flash drive (see below). > _ Is this particular USB device _still_ capable of booting newer > computers? Yes. > What happens if you would try _again_ to boot a

Hi, i have uploaded a little gz compressed tarball http://scdbackup.webframe.org/block_seq.tgz containing -rwxr-xr-x thomas/thomas 4552 2017-03-21 09:23 block_seq -rw-r--r-- thomas/thomas 315 2017-03-21 09:22 block_seq.c To be unpacked in a suitable directory by tar xvzf block_seq.tgz The binary "block_seq" was compiled on Debian Jessie. If it does not run, do cc -o

On 03/18/2017 03:02 PM, Thomas Schmitt via Syslinux wrote: > Hi, > > David Christensen wrote: >> I use this USB flash drive for bootable installer images; I do not >> attempt to mount it. I don't know that I could, even if I wanted to: > > mkdir /mnt/iso > mount /dev/sdc /mnt/iso > > or, because partition 1 starts at block 0, you may mount it too >

> On 03/19/2017 04:03 PM, David Christensen wrote: > > [ 0.600883] ---[ end Kernel panic - not syncing: VFS: Unable to mount > > root fs on unkonwn-block(0,0) > > Similar kernel panic when booted on Intel DQ67SW i7-2600S. > > > David > That's because your syslinux.cfg is "wrong", but the behavior just proves that SYSLINUX is indeed

> syslinux at zytor.com: > > I have two older computers with Intel D865GBFLK motherboards (~2003) > and Pentium 4 HT CPU's. They both have the latest available BIOS > installed. I would like to put Debian on them. > > > I have downloaded: > > > http://cdimage.debian.org/debian-cd/current/i386/iso-cd/debian-8.7.1-i386-xfce-CD-1.iso > > > When

On 03/19/2017 11:28 PM, David Christensen via Syslinux wrote: > I will try to do an install later, and will report the result. Booting the USB flash drive I prepared, the Debian installer runs: Select a language English Select your location United States Configure the keyboard American English Detect and mount CD-ROM Incorrect CD-ROM detected The CD-ROM drive contains a CD which

On 03/21/2017 01:14 AM, Thomas Schmitt via Syslinux wrote: > Hi, > > David Christensen wrote: >> Booting the USB flash drive I prepared, the Debian installer runs: >> [...] >> The CD-ROM drive contains a CD which cannot be used for installation. > > Afaik, the software in a Debian ISO looks for particular files to > identify the device with the ISO. > Did you

David Christensen wrote: > This is how I prepared an ADATA USB Flash Drive 4 GB: ... install-mbr /dev/sdb ... [Rest of very clear description snipped.] What's that? That desn't exist in the Debian I'm running. Otherwise you gave a very good description of what you're doing. >From another message: > Please provide a URL for documentation that explains how to build a >

On 03/21/2017 01:41 AM, Thomas Schmitt via Syslinux wrote: > Hi, > > i have uploaded a little gz compressed tarball > > http://scdbackup.webframe.org/block_seq.tgz > > containing > > -rwxr-xr-x thomas/thomas 4552 2017-03-21 09:23 block_seq > -rw-r--r-- thomas/thomas 315 2017-03-21 09:22 block_seq.c > > To be unpacked in a suitable directory by > >

Thomas Schmitt wrote: > So if we had a MBR which prints the content of the first 512 read bytes > we could tell whether they are block aligned and from which block they > come. Ok. I'll try. Is it the isohdppx or isohdpfx (or both) that is relevant? Meanwhile I have a hacked isohdppx.bin that prints: G if GPT M if MBR <nothing> if no partition info E if EBIOS C if not EBIOS

Hi, Ady wrote: > so, why the original isohybrid image from Debian and many other > isohybrid images have mostly (but not all) "00s" in place of the "90s"? That's a fake Block0 of an Apple Partition Map. Part of mjg's layout. Caused by isohybrid option --mac or xorrisofs option -isohybrid-apm-hfsplus. * Fedora has it with EFI FAT filesystem in one partition

On 03/18/2017 04:15 PM, Ady Ady via Syslinux wrote: > >> On 03/18/2017 01:18 AM, Ady Ady via Syslinux wrote: >>> _ With the USB device connected to (one of) the problematic >>> computer(s), power up the system and get into the BIOS setup. In >>> the BIOS setup screen(s), change the boot order in such way that >>> the USB device is recognized as first

> Hi, > > Ady wrote: > > http://repo.or.cz/syslinux.git/tree/HEAD:/diag > > "handoff.bin > > This does not look like it would tell much of the properties in question. > Nevertheless its print functions might be of interest for an isohybrid > diagnostic MBR. > > > > and at least 2 geodsp*.{bin,img(gz)} > > I am now reading >

On 03/19/2017 01:01 AM, Thomas Schmitt via Syslinux wrote: > David Christensen wrote: >> Is there a way I can build live 32-bit Debian GNU/Linux USB images without >> isohdpfx.S and syslinux.bin? > > You could try > https://www.debian.org/releases/jessie/i386/ch04s03.html.en#usb-copy-flexible This is how I prepared an ADATA USB Flash Drive 4 GB: # cat

Thomas Schmitt wrote: > My main point of interest is which block is really loaded as first one > of isolinux.bin. [Program snipped.] > (It could be shorter if i did not insist in big endian words.) Why insisting? Anyway appended is a dumper version. I could put up a binery version if needed. Let me know if so. -- MartinS /*

Hi, Gene Cumm wrote: > it seems the stack format got > set, changed, then mostly reverted back, with this code being the last > piece missing from 2009. The commit to isohdpfx.S of 2009-05-31 looks incomplete. The sequence of the stack pointers was swapped, but the sequence of stack pushes was not.

Hi, David Christensen had Martin's MBR write: > C That means the LBA 8444 has to be converted to a Cylinder/Head/Sector address. It would be interesting to learn by which heads/cylinder and sectors/head factors. > 00000000000000000000000000000000 > ... > 00000000000000000000000000000000 Well, this is none of the block contents which was written to the stick. Neither the MBR

Hi, David Christensen wrote: > The USB flash drive boots the Debian installer in the old PC! Congrats. > There is no syslinux.cfg on debian-8.7.1-i386-xfce-CD-1.iso: The configuration is named /isolinux/isolinux.cfg. Looks like it is surrounded by a little empire of .cfg files: /isolinux/adgtk.cfg /isolinux/adtxt.cfg /isolinux/exithelp.cfg /isolinux/gtk.cfg

On 03/19/2017 08:30 PM, Ady Ady via Syslinux wrote: > That's because your syslinux.cfg is "wrong", but the behavior just > proves that SYSLINUX is indeed booting. > > # ***syslinux.cfg*** > DEFAULT mylabel > LABEL mylabel > LINUX vmlinuz > APPEND initrd=initrd.gz > # ****************** The USB flash drive boots the Debian installer in the old PC! > So

Hi, i have implemented in xorriso the equivalents of isohybrid.c options --mac and --uefi. There remains the question how to ensure that the submitted MBR is prepared for the 32 byte mock-up of an APM Block0. I see in git of may 2012 that all mbr/isohdp[fp]x*.bin begin by 33 ed 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90