While copying/downloading a large file (3+ GB) the checksusms aren't the same afterwards.
- A patch cable transfer between two computers. (source sum was OK)
- Download from Main site.
- Copy from another partition. (the original sum was OK)
The file is an ISO for a Debian-Based OS. (but this is not the only file that has had problems...)
I am using Ubuntu 15.10 alongside Mac OSX El Capitian, and have had this problem on both. However with the Mac I was eventually able to get the file correctly.
I have run the
badblocks command (on entire disk) and
fsck.ext4 (Only on the Ububntu partition) from a live CD and no problems were reported. More over the SMARTS report for the drive reports the disk is OK.
Could this be a drive failure, and is there anything else I can do to check the integrity of the Hard Drive?
So another intersting thing is going on... I ran the sha1sum once and got:
87004a6bea1ff1792f733f9048b3c43b7a2c66af I just ran it three more times and got
076d303bbbce719edffd9ed821bc83c448d42bb4. I have made no changes to this file... Any ideas?
I just restarted my system and the sum has stopped "shifting"... So it appears I might have cut it off mid write, even though
cp returned... I am confused at this point as to why it is hanging out in a buffer for so long. Anyone know what I can do about this?