4 ms·

Ubuntu (a quite a few other distros) can be made to run entirely from RAM (that's how the LiveCDs actually work). It's probably not as easy to configure are Pup

Ubuntu (a quite a few other distros) can be made to run entirely from RAM (that's how the LiveCDs actually work). It's probably not as easy to configure are Puppy or Tinycore, but it's possible.

Naac 6y ago
That's different than what the GP said. I'm pretty sure you can't boot into an Ubuntu live disk, detach the usb, and keep using the system without any errors or loss of functionality.
- boogies 6y ago
  That was what I thought too, thanks to abdullahkhalids for linking to the askubuntu thread that shows — with the right boot flag — you actually can https://news.ycombinator.com/item?id=25172520 https://news.ycombinator.com/item?id=25172520
thomastjeffery 6y ago
Yes, in fact it's pretty easy. You just add the right arguments to GRUB, though I don't remember them off-hand. I used to have a flash drive with GRUB installed, and several "Live CD" ISOs. It would have two options per ISO: the second would copy the squashfs to a ramdisk before boot. Tinycore is especially great when you don't have USB3 available, because you don't have to wait minutes for >1GB of data to be copied to RAM.
- jraph 6y ago
  toram is the parameter to add to the GRUB kernel directive.
abdullahkhalids 6y ago
It's as simple as adding a single boot parameter to grub https://askubuntu.com/questions/829917/can-i-boot-a-live-usb-fully-to-ram-allowing-me-to-remove-the-disk https://askubuntu.com/questions/829917/can-i-boot-a-live-usb...