How to mount ramdisk upon startup

[tckotb]

Whats the easiest way to mount a ramdisk upon startup? Preferably answer with directions for terminal.

[Lisiano]

No need. It's already there in /dev/shm. It has 50% of your RAM as possible space, by default (Don't worry, unused shm space is not lost unlike in Windows). Also once Ubuntu 11.10 hits the scene you will also find it in /run/shm

[tckotb]

**Edit*** Oh, I see.

--And I have ubuntu 10.04.

[tckotb]

What was that about unused shm space?

[Lisiano]

No. /dev/shm is a mountpoint so you see it as a folder and can do stuff inside it like in any other mountpoint or folder.
And by auto copying you could tell your PC to do that but could you say what exactly you need to copy there? I could show you how to do that later (Eg: File, files (Both never move), folder (Files inside might change)


When you put something inside /dev/shm, some space in RAM get's allocated to that file, if you delete it, it get's freed. In Windows if you create a RAMDisk, the RAM is permanently allocated for the whole RAMDisk.
As in, in your RAM, /dev/shm never uses more than it needs to.

[tckotb]

Well I need all files and sub directories in /home/user/temp/ to go into /dev/shm/, then at shutdown go back into /home/user/temp/.

[tckotb]

and the files need to be copied over to /dev/shm before a specific init script runs.

[Enigmapond]

You realize that the information/data you move there is volatile and can get wiped or corrupted if there is a loss of power. Just saying this isn't such a great idea.

[tckotb]

Dont worry about the data being wiped, I already set up a cronjob to back it up every hour.

[Enigmapond]

I wasn't worrying...it's your data and you failed to mention the cronjob to backup...