I'm going to get the hang of this mailing list eventually. Apologies for any duplicate emails..>Ian Bannerman: >> While I did know the .exe variant was not official / untrusted, >Is there a special reason for this ? (Except the known bugs which affect Linux binaries, too.)Not really. I had never found a convincing source for it and had seen previous list entries like this one -http://www.syslinux.org/archives/2013-November/021108.html - suggesting the Perl version. I did not know the Perl version did not support the EFI/Mac changes. For my use, that's critical, so I will not be using the Perl version further. (Thank you for the clarification there) intrigeri wrote:>We at Tails rely on isohybrid.pl for installing on OSX: >https://tails.boum.org/doc/first_steps/installation/manual/mac/Now I'm confused, if Tails is able to use the .pl for the purpose of installing on OS X that would suggest it does have the EFI/Mac updates..? If the Perl version was available, yeah, that would make my ISO build processes easier Smiling face with smiling eyes --Ian
Hi, Ian Bannerman wrote (21 Jun 2014 19:29:46 GMT) :> Now I'm confused, if Tails is able to use the .pl for the purpose of > installing on OS X that would suggest it does have the EFI/Mac > updates..?I understand why you see it as suggested by combining bits of what I've written here recently, but 1. I've no idea if isohybrid.pl has such features; and 2. we're not relying on it. If you're curious, here are the details. There are three major kinds of Tails boot devices: * DVD burnt from ISO: lacks a few Tails features, but can be created on most operating systems; does not support EFI boot (not that it couldn't, but having it working is low-priority for us) * alpha generation: created via isohybrid + cat>/dev/sdx; lacks a few Tails features, but can be created on most operating systems; does not support EFI boot (same as above) * beta generation: created with Tails Installer, either from a running Tails DVD, or from a running alpha generation Tails; has all Tails features, including EFI support once Tails 1.1 is out of July 22. Cheers, -- intrigeri
Hi, Ian Bannerman:> I did not know the Perl version did not support the EFI/Mac changes.Comparing the help texts of http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/utils/isohybrid.c and http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/utils/isohybrid.in shows that the latter lacks: -u --uefi Build EFI bootable image -m --mac Add AFP table support (It should be "APM" Apple Partition Map, not "AFP" Apple Filing Protocol, btw.) These features suffer from bugs, which obviously do not hamper booting of Fedora ISOs. http://download.fedoraproject.org/pub/fedora/linux/releases/20/Live/x86_64/Fedora-Live-Desktop-x86_64-20-1.iso Debian, Ubuntu, and Archlinux ISOs with EFI support are made with isohybrid from xorriso/libisofs using "isohdp[fp]x*.bin" MBRs from the SYSLINUX installation. intrigeri:> Would it help if someone with the needed > Perl skills stepped up and volunteered to maintain the Perl version, > at least to port bugfixes from the C version?I am willing to explain what is unclear about above options. Theory is in http://bazaar.launchpad.net/~libburnia-team/libisofs/scdbackup/view/head:/doc/boot_sectors.txt intrigeri:> https://tails.boum.org/doc/first_steps/installation/manual/mac/Ian Bannerman:> Now I'm confused, if Tails is able to use the .pl for the purpose of > installing on OS X that would suggest it does have the EFI/Mac updates..?Seems to be Macs with BIOS support/emulation. The shown command perl isohybrid.pl tails-i386-0.17.1.iso does not employ special options. There are even UEFI Macs which do not boot if GPT is present. See answer by Colin Watson in: http://askubuntu.com/questions/37999/what-is-different-about-the-mac-iso-image For the others, the most mac-ish ISOs are probably those of Fedora: - isolinux.bin ISOLINUX boot image for BIOS reachable by EL Torito and MBR code - efiboot.img FAT filesystem image for UEFI reachable by El Torito, MBR partition, GPT partition, APM partition - macboot.img HFS(Plus ?) filesystem image for some Macs reachable by El Torito, MBR partition, GPT partition, APM partition As one can see from the flaws, created by isohybrid.c --gpt --mac : ------------------------------------------------------------------------- Volume id : 'Fedora-Live-Desktop-x86_64-20-1' El Torito catalog : 42 1 El Torito cat path : /isolinux/boot.cat El Torito images : N Pltf B Emul Ld_seg Hdpt Ldsiz LBA El Torito boot img : 1 BIOS y none 0x0000 0x00 4 2559 El Torito boot img : 2 UEFI y none 0x0000 0x00 10064 43 El Torito boot img : 3 UEFI y none 0x0000 0x00 40320 2571 El Torito img path : 1 /isolinux/isolinux.bin El Torito img opts : 1 boot-info-table isohybrid-suitable El Torito img path : 2 /isolinux/efiboot.img El Torito img path : 3 /isolinux/macboot.img System area options: 0x00000102 System area summary: MBR isohybrid cyl-align-on GPT APM ISO image size/512 : 1950144 Partition offset : 0 MBR heads per cyl : 64 MBR secs per head : 32 MBR partition table: N Status Type Start Blocks MBR partition : 1 0x80 0x00 0 1951744 MBR partition : 2 0x00 0xef 172 10064 MBR partition : 3 0x00 0x00 10284 40320 MBR partition path : 2 /isolinux/efiboot.img MBR partition path : 3 /isolinux/macboot.img GPT : N Info GPT backup problems: Implausible header LBA 1951742 GPT disk GUID : cfbbf979fff49a49a07b0ecc3dcc1834 GPT entry array : 16 128 overlapping GPT lba range : 48 1951710 1951742 GPT partition name : 1 49534f4879627269642049534f0049534f487962726964004170706c GPT partition GUID : 1 0d4c2714741d9a4fac7e9ca380270d34 GPT type GUID : 1 a2a0d0ebe5b9334487c068b6b72699c7 GPT partition flags: 1 0x0000000000000000 GPT start and size : 1 0 1950145 GPT partition name : 2 49534f487962726964004170706c65004170706c GPT partition GUID : 2 9acc9f1abedd27448e31e48a7b2c4dee GPT type GUID : 2 a2a0d0ebe5b9334487c068b6b72699c7 GPT partition flags: 2 0x0000000000000000 GPT start and size : 2 172 10064 GPT partition path : 2 /isolinux/efiboot.img GPT partition name : 3 49534f487962726964004170706c65004170706c GPT partition GUID : 3 9acc9f1abedd27448e31e48a7b2c4dee GPT type GUID : 3 005346480000aa11aa1100306543ecac GPT partition flags: 3 0x0000000000000000 GPT start and size : 3 10284 40320 GPT partition path : 3 /isolinux/macboot.img APM : N Info APM block size : 2048 APM gap fillers : 0 APM partition name : 1 EFI APM partition type : 1 Apple_HFS APM start and size : 1 43 10064 APM partition path : 1 /isolinux/efiboot.img APM partition name : 2 EFI APM partition type : 2 Apple_HFS APM start and size : 2 2571 40320 APM partition path : 2 /isolinux/macboot.img ------------------------------------------------------------------------- Have a nice day :) Thomas
Geert Stappers
2014-Jun-22 11:10 UTC
[syslinux] [PATCH] utils/isohybrid.c: usage text change, s/AFP/APM/
It is "APM" Apple Partition Map, not "AFP" Apple Filing
Protocol
Reported-by: Thomas Schmitt <scdbackup at gmx.net>
---
utils/isohybrid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/utils/isohybrid.c b/utils/isohybrid.c
index 05afd29..15f63fc 100644
--- a/utils/isohybrid.c
+++ b/utils/isohybrid.c
@@ -236,7 +236,7 @@ printh(void)
printf(FMT, " -t --type", "Specify partition type (default
0x17)");
printf(FMT, " -i --id", "Specify MBR ID (default
random)");
printf(FMT, " -u --uefi", "Build EFI bootable
image");
- printf(FMT, " -m --mac", "Add AFP table support");
+ printf(FMT, " -m --mac", "Add APM table support");
printf("\n");
printf(FMT, " --forcehd0", "Assume we are loaded as disk
ID 0");
--
1.8.4.2