I'm currently working on side-project using a full blown installation of ArchLinuxARM to an external USB hard disk.
From the 1st impressions I've noticed that even when the PC is idling without anything to do the hdd will spin up and down every 5 minutes or so.
Then I tested booting up from pendisk with the hdd connected and the hdd never spins up and down.
My question: is it possible to have an OS booting from an hdd and then writing every changes to pendisk? Like a buffer?
And then that buffer would get written to hdd every 2 or 3 hours. It would save on the hdd life even though it would compromise the pendisk life but I don't care.
BTW, doing it to the RAM is not an option since this box only has 128MB.
Thanks in advance