if i setup extra repositories but that are backport repositories.. the resulting image kernel seems has problems at installing, got those errors when try to part the disk:
nfsd: Unknown symbol setattr_prepare (err 0)
nfsd: Unknown symbol set_posix_acl (err 0)
ext4: Unknown symbol setattr_prepare (err 0)
ext4: Unknown symbol posix_acl_update_mode (err 0)
of course running kernel at install are the default stable of current live distribution..
but no matter what distribution i use.. if i setup backports, the resulting installer doe snot install.. with those errors.. i tried with jessie, wheezy and strecht.