Bug#851628: Bugs on First CD/DVD for Jessie 8.5, 8.6, 8.7
> unexpectedly larger
> actual file size (642M) vs reported size (613M) for the “i386 8.x.0 LXDE
> CD#1” iso.
This is explainable from the difference of programmer's MiB and IEC's MB:
642.0 / 1024 / 1024 * 1000 * 1000 = 612.2589111328125
> The “i386 8.5.0 XFCE CD#1” ISO image mounted cleanly on the mac laptop
Is this the "1997-vintage" machine ? (Or is it a third machine standing by ?)
> "i386 8.6.0 DVD 1" ISO image - iso was damaged although checked OK via MD5,
Most probably not by transport. After all it is very unlikely to get
the same MD5 by accident.
> nor would it mount on a Mac Laptop [...]
> Could it be that the hybrid CD/USB iso is causing problems?
A while ago, there was a discussion here
Start of thread
"snow leopard [...] The following disk image could not be opened:
debian-6.0.1a-i386-DVD-1.iso - no mountable file systems"
"I do confirm that after removing the isohybrid of the image, I am
able to mount it."
The mountable ISO was made from the not mountable one by:
dd if=/dev/zero bs=2K count=16 >test_image.iso
dd if=/dvdbuffer/debian-6.0.1a-i386-DVD-1.iso bs=2K skip=16 >>test_image.iso
(The result won't boot from USB stick, of course.)
The only difference i can spot between isohybrid equipment of
is the size of the ISOs and the fact that the DVD image has no consistent
I now repacked debian-8.6.0-i386-DVD-1.iso by xorriso-1.4.6 (as of Sid)
and got consistent CHS geometry (238 heads/cyl, 32 secs/head).
Repacking to "test.iso" was done by:
mount debian-8.6.0-i386-DVD-1.iso /mnt/iso
xorriso -as mkisofs \
-o test.iso \
-V 'Debian 8.6.0 i386 1' \
-isohybrid-mbr --interval:local_fs:0s-15s:zero_mbrpt,zero_gpt,zero_apm:'debian-8.6.0-i386-DVD-1.iso' \
-partition_cyl_align off \
-partition_offset 0 \
-c '/isolinux/boot.cat' \
-b '/isolinux/isolinux.bin' \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-e '/boot/grub/efi.img' \
-no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
Have a nice day :)