I have a large collection of files (87.3 GB and 80054 objects) which I am copying from drive to drive. To make sure everything went well, I have made a checksum file to check with
md5sum -c checksums.txt. Every time I try this, suddenly lightdm crashes (at least that's what I think is happening), and I am presented with the login screen. My session is gone.
What might cause this?
md5sum has a limit to how large checksum files or number of files it can handle? (Limited by system specs?)
checksums.txt is 7.6 MB and has 79281 lines.
The destination drive is an external NTFS formatted one.
I run Ubuntu 12.04