News from SourceForge:
https://twitter.com/sfnet_ops#SourceForge There's instability and frequent 500 errors on the SourceForge site currently. We're working on getting this fixed asap
This is the reason, why the error happened.
I tried this, but got errors:
[root@dns320]# debian -chroot /etc/issue
debian -chroot cat /etc/issue # to execute "cat /etc/issue" under Debian and immediately return to Alt-F
debian -chroot # to login to Debian, 'exit' to return to Alt-F
cp: can't stat '/mnt/NAS/etc/default/kexec-debian': No such file or directory
mount: mounting usbfs on /mnt/NAS/proc/bus/usb failed: No such file or directory
chroot: can't execute '/etc/issue': Permission denied
How can I start Debian at all on my DNS-320?