I have been using mint/ubuntu on flash drives for a while. I didn't have any issues with persistent casper-rw errors ever.

The problem happened with the 11.x series. When ever I run these on a particular server, the casper filesystem starts to show errors. First guess was bad usb flash so I threw it away. No improvement.

The system is a quad core dual xeon and I think the problem is caused by how fast is shuts down. I mean it takes about 2 or 3 seconds to do a full power off.

I have yet to find an easy way to fsck the file eitther since I can't mount it that I know of. Ubuntu doesn't like mounting the flash drive it is running off.

So I am wondering if there is a way to slow the shutdown processes down a lot! I want it to take 10 to 15 seconds to wind down and see if that fixes it.


Maybe telinit 0 then halt -h

I have not used many shutdown options.

Well, halt -h seems at least work better than normal shutdown.