Albrecht Mehl wrote:
I would like to use my opensuse 10.2 system on a MSI K8N Neo2 Platinum board with a Hitachi SATA 160 GB HDS722516VLSA80 hard disk mostly without the hd running, i.e. I imagine copying the files needed for my daily work at the beginning of a session to a ram disk and then working from there. At the end of such a script the hd will be turned off. But ... I do not know how to accomplish this turning off. So for hints as detailled as possible as to how to turn off the hd in a script I would be very grateful.
The very nature of your question reveals that you are not very experienced with Linux, or Unix machines in general...and thus, don't have any idea of how complicated it would be to do what you propose. for example, right now, as you read this, run the command that lists all open files: lsof Now, for you to turn your hard drive off, you have to close each of those files... of course, some of those have to do with the execution of essential systems program. So good luck with figuring out how to do that. Are you planning on copying over your entire home directory into the ramdisk? Otherwise, your home directory will be "busy" and the system will NOT let you unmount the hard drive. Modern disk drives last for YEARS running 24x7. And how do you intend to recreate /bin, /lib, /usr/bin, /usr/lib, /var and other vital directories in your ramdisk without using up so much memory that you don't have enough free memory to even load a program and its data. How many gigabytes of memory do you have on your main board? Memory might be cheap, but it would be even cheaper to buy a 2nd 160 GB disk drive as a spare. In short, you're essentially asking how to modify your car so that the engine can be removed very quickly while your car is moving, so that you can drive around town in stop-and-go traffic with no engine. Answer: It doesn't work that way.
A. Mehl
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