Hi, > [with] debian-7.2.0-i386-lxde-CD-1.iso > /dev/sdb > [...] debian-live-7.2-i386-lxde-desktop+nonfree.iso > I can re-format the free space present on usb
These two images have MBRs with partition 1 beginning at block 64 (= 32 KB). See e.g. output of /sbin/fdisk -lu debian-7.2.0-i386-lxde-CD-1.iso They have obviously been created with xorrisofs options -isohybrid-mbr and -partition_offset 16. > When change file in to: isohybrid debian-7.2.0-i386-lxde-CD-1.iso ISOLINUX program isohybrid produces an MBR with partition 1 starting at block 0. This overwrites the MBR produced by xorriso. There is not much other difference to be expected between the downloaded ISO and its state after the isohybrid run. So i assume this must be the cause. One may test this theory by setting byte 448 of the isohybrid result to 1 and byte 454 to 0. The ISO is prepared to work with that start address to. But program isohybrid did not know. > cat debian-7.2.0-i386-lxde-CD-1.iso > /dev/sdb > on pendrive, with filesystem ext2 or Fat32 After that cat command, the filesystems are overwritten or at least unreachable. Have a nice day :) Thomas -- To UNSUBSCRIBE, email to debian-cd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1776651718789480...@scdbackup.webframe.org
