Hi, With 14/02/07 Netinstall Debian testing debian-testing-amd64-netinst iso initrd is now generated without any errors.
and i've found the sda/sdb reverse problem : Dell PowerEdge 1950 server has a virtual floppy detected and attached as scsi removable disk to /dev/sda. So Megaraid sata is attached as /dev/sdb. Once install finished and first reboot executed boot hang because initrd want to mount sda letter. To fix it : - after keyboard selection switch into vt2 with ctrl-alt-f2 - type : modprobe -r usb_storage ; modprobe -r megaraid_sas ; modprobe -v megaraid_sas ; modprobe -v usb_storage. after that hard disk is mapped to sda and virtual floppy to sdb and there are no more problem with installer. or maybe (not tested) just disable usb_storage module at installer boot grub prompt. regards, Cédric Lagneau