Hi, Serge LAOT wrote: > ./pool/main/m/mono/libmono-compilerservices-symbolwriter4.0-cil_4.6.2.7+dfsg-1_all.deb > ./pool/main/m/mono/libmono-compilerservices-symbolwriter4.0-cil_4.6.2.7+dfsg-1_a.deb
The names you see on DVD are truncated to 65 characters, while retaining the .deb suffixes. You are probably looking at the Joliet tree, not the ISO 9660 + Rock Ridge tree which GNU/Linux mounts by default. Mounting Joliet would match the default behavior of operating system which your mail client is running on: > User-Agent: ... Windows NT 10.0 ... Cc'ing debian-cd: Interestingly, debian-9.3.0-amd64-netinst.iso was made with xorrisofs option -joliet-long. which would enable longer Joliet names. But production of debian-9.3.0-amd64-DVD-2.iso did not use it. ------------------------------------------------------------------ Details: If i download https://cdimage.debian.org/debian-cd/current/amd64/iso-dvd/debian-9.3.0-amd64-DVD-2.iso and mount it without disabling Rock Ridge, i see the longer name /mnt/iso/pool/main/m/mono/libmono-compilerservices-symbolwriter4.0-cil_4.6.2.7+dfsg-1_all.deb If i mount the Joliet tree by "-o norock", i see the truncated name /mnt/iso/pool/main/m/mono/libmono-compilerservices-symbolwriter4.0-cil_4.6.2.7+dfsg-1_a.deb This truncation is caused by xorrisofs option -J without a specs relaxation option like -joliet-long. The truncated length of 65 is correct, because Joliet prescribes 128 bytes which suffices for 64 UTF-16 characters. The dot iin the name does not count for that limit. Looking at the files .disk/mkisofs of debian-9.3.0-amd64-DVD-2.iso and debian-9.3.0-amd64-netinst.iso reveils that netinst had -joliet-long whereas DVD-2 had not. Have a nice day :) Thomas