I have an old Thinkpad T61 laptop that I mostly use for writing documents.
I'd like to remove the hard drive and run some lightweight GNU/Linux distribution from a tiny USB flash drive. I don't need an HDD or SSD because I'm not going to have any big files on it.
Is there a distribution created for this purpose? I mean, something that doesn't cause a lot of disk writes and is optimized for running from a USB flash drive? It should use the RAM as much as possible and write to the disk as little as possible. It also needs to have a GUI.
Or is it better to just go with something like Xubuntu or Lubuntu and try adding things like “relatime” to fstab?
And how would I actually install it to the USB drive? Do I install it just like I install distros to a regular HDD? Or is it better to use something like unetbootin with the persistance option?
Also, which filesystem is the best for USB flash drives?