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I'm tring to implement Flashcache for a root particion for an ubuntu box. There is an excellent doc how to do this in flashcache:

https://github.com/facebook/flashcache/blob/master/README-DKMS

My problem is at this line:

Edit your /etc/fstab and /boot/grub/grub.cfg to change the root device to the flashcache device you intend to use

I'm not familiar with grub.cfg, how should I edit it? I can do the fstab part.

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On Ubuntu systems you don't actually edit /boot/grub/grub.cfg, but you edit /etc/default/grub which is well commented and even has its own documentation (info -f grub -n 'Simple configuration').

But you can bet that you won't need to delve into "info" if all you need is to change stuff on the kernel command line (look for GRUB_CMD_LINE_* variables in that file).

  • [and yes I hate "info" too] – Luke404 May 31 '13 at 12:53

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