search for: mkrescu

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2020 Oct 07
1
strange email from cron regarding "rear"
...not found, grub2-mkimage will likely fail. Please install the grub2-efi-x64-modules package to fix this. ERROR: Error occurred during grub2-mkimage of BOOTX64.efi Aborting due to an error, check /var/log/rear/rear-fcshome.log for details /bin/sh: line 1: 30339 Terminated /usr/sbin/rear mkrescue It is possible it has happened before, as until recently I haven't paid a lot of attention to root's email (I know, I know,... bad me). but I wonder what it's all about... I have not knowingly ever used "rear" or "mkrescue". BTW, this is on an up to date Centos-7...
2016 Mar 22
0
Changes to get CD to boot on EFI System.
...efi of program isohybrid is to be used with a GRUB2 equipped FAT filesystem image that is already in the ISO as its second El Torito boot image. Matthew Garrett developed this ISOLINUX+GRUB2 layout for Fedora. Many other distros follow his example. The next popular alternative is the layout of grub-mkrescue which boots both, BIOS and UEFI, by GRUB2 software. And then there is SuSE which grafts a second ISO superblock and directory tree onto an ISO which contains a GRUB2 boot image for EFI. (Less popular only if we count SuSE as 1 user, not by its many human users.) I proposed to mention this peculi...
2015 Jul 06
0
USB stick query
...grub2-mkconfig. http://www.gnu.org/software/grub/manual/grub.html#Invoking-grub_002dinstall Such as this example where you have, /dev/sdb1 as ext4 with a boot/ directory on it, and you've mounted it at /mnt grub-install --boot-directory=/mnt/boot /dev/sdc Another possibility is using grub2-mkrescue. http://www.gnu.org/software/grub/manual/grub.html#Invoking-grub_002dmkrescue -- Chris Murphy
2016 Feb 22
1
How to understand partition table on hybrid ISO image?
Hi, if I inspect an hybrid ISO with tools like fdisk and gdisk, then looks like hybrid ISO has both the MBR and GPT in order to support both the BIOS and UEFI: # gdisk -l /dev/sdb GPT fdisk (gdisk) version 0.8.10 Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: present Found valid MBR and GPT. Which do you want to use? 1 - MBR 2 - GPT 3 - Create blank GPT
2016 Mar 22
7
Changes to get CD to boot on EFI System.
I've been the maintainer of the G4L project since 2004, and have had great success using syslinux, but yesterday I ran into a machine that would not boot from the CD. The system system was a Lenovo L540 notebook, and it seems to use EFI? Disabled the Secure EFI, but it still would not boot. Comes up with the syslinux menu and seems to load the kernel, but then it just stops. Never shows
2014 Feb 09
0
isohybrid --mac doesn't find the mac efi image
...the ISO. > Warning! Main partition table overlaps the first partition by 64 blocks! This is a consequence of the mjg multi-hybrid layout, which prescribes nested partitions. There is a school of thought which emphasizes that partitions should not be nested (see the results of GRUB2's grub-mkrescue with EFI support). ------------------------------------------------------------ If you really rely on Apple Partition Map and macboot.img, then test this with all machines in reach. If there arise problems, then send me the first 64 kB of your image for inspection, or upload it as a whole and te...
2015 Jul 05
2
USB stick query
Gordon Messmer wrote: > On 07/03/2015 03:43 AM, Timothy Murphy wrote: >> I've tried this again, and it does not seem to work. >> Have you actually tried it? > I don't have a CentOS system here that I can reboot readily. And it > occurs to me that if I did, I didn't ask if your system boots via BIOS > or UEFI. Thanks for your response. It boots via BIOS, and
2014 Jul 29
0
isohybrid: slint64-14.1.iso: unable to find mac efi image
...egative effect from platform id 0xef with the Mac image should only show up at boot time. I would be interested to learn more about HFS+ and Blessing. But > https://developer.apple.com/library/mac/technotes/tn/tn1150.html says "Sorry, that page cannot be found". I only know that grub-mkrescue blesses /System/Library/CoreServices/boot.efi with "intel_bootfile" and /System/Library/CoreServices with "ppc_bootdir" > _Is there a chance that I'd succeed in using xorriso instead of mkisofs? Yes. :)) You will not have to use isohybrid.pl or isoh...
2015 Apr 05
2
Is efiboot.img required?
Hi, i wrote: > > http://mjg59.dreamwidth.org/11285.html piranna at gmail.com wrote: > There it says about creating a third El Torito image only for Macs, > since old ones could fail and this could be the problem I'm having. The third boot image is HFS+, not FAT. I understand this is for pre-EFI Macs. Try a Debian amd64 ISO, e.g.:
2016 Apr 02
3
Changes to get CD to boot on EFI System.
Hi, Ady wrote: > * ISO images, > * burnt to _optical media_, > * and using then the resulting _optical media_ to boot in _UEFI mode_, > * in which the _main bootloader_ for such _optical media_ booting in > such _UEFI mode_ is part of The Syslinux Project. I would be willing to try such an ISO with qemu+OVMF. Regrettably my real test iron has no EFI firmware. Do you know the
2014 Jul 29
2
isohybrid: slint64-14.1.iso: unable to find mac efi image
HI, In http://slint.fr/misc/MacBoot/ you'll find all context information. All files referenced here are stored there. Long story short: once dd-ed on an USB stick the ISO image can boot on a BIOS or EFI machine, but I want it to be able to boot on most x86_64 Macs with an EFI firmware. Unfortunately I get the error message: isohybrid: slint64-14.1.iso: unable to find mac efi image The
2014 Feb 09
1
isohybrid --mac doesn't find the mac efi image
On 02/08/14 17:40, Thomas Schmitt wrote: > -eltorito-id "MAC" \ thanks a lot, that seems to allow isohybrid --mac to work \o/ for the curious this is the image before and after isohybrid as shown by gparted * output from xorriso xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project. Drive current: -outdev 'stdio:../image.iso' Media current: stdio file,
2014 Nov 10
1
Boot fails in a VMware player VM - syslinux 6.03
On 10/11/2014 10:46, Thomas Schmitt wrote: > Hi, > > i downloaded > http://slint.fr/misc/testing/slint64-14.1_syslinux.6.03.iso > > Inspection by xorriso-1.3.8: > > xorriso -indev slint64-14.1_syslinux.6.03.iso \ > -report_el_torito plain \ > -report_system_area plain > > yields > > El Torito catalog : 46 1 >
2015 Oct 28
3
Isohybrid wiki page and UEFI
Hello Thomas, Thomas Schmitt via Syslinux said on Sun, Oct 25, 2015 at 04:35:57PM +0100: >I assume you can boot Fedora Live CD on the same (virtual) hardware. Not sure for Fedora, but the system is installed with either RHEL6, RHEL7 or Ubuntu 14.04 depending on the Lab I'm making on it without issue. >Just to make sure that the firmware works so far. Globally they do ;-) >
2014 Jul 30
2
isohybrid: slint64-14.1.iso: unable to find mac efi image
Hi, On 29/07/2014 23:19, Thomas Schmitt wrote: > A good opportunity to brag with xorriso's boot inspection > features (since xorriso-1.3.8): Yes! I've upgraded libburn, libisofs and libisoburn so now I can play with it too ;) > I forgot to advise (or misadvise) -isohybrid-apm-hfsplus with > the image /isolinux/efiboot.img . So we only got one APM > partition here. A
2015 Apr 05
4
Is efiboot.img required?
...s down to: No GRUB = no UEFI from ISO 9660. > posts / articles / blogs [...] tend to mix, without clear > discernment, "UEFI specs" together with "the way GRUB2 does it" It is not that GRUB would do something special with booting UEFI (except that the ISOs made by grub-mkrescue have the prescribed neat partition tables). It is rather that no way is known how to let SYSLINUX understand the ISO 9660 filesystem outside of its ESP. (Ain't there any way to put enough ISOLINUX brain into the ESP so that it is smart enough ?) > _ clearly present generic capabilities o...
2015 Apr 05
4
Is efiboot.img required?
Hi, piranna wrote: > > Quoting http://www.syslinux.org/wiki/index.php/Isohybrid#UEFI: > > "The additional isohybrid feature for UEFI adds a partition to the MBR > > partition table pointing to the same file in the ISO 9660 filesystem > > as does the El Torito catalog entry for EFI." Ady wrote: > IMHO, the current content of the Isohybrid page in the Syslinux