I've no idea on how btrfs performs with a flash disk actually. My btrfs partition just locates on a normal hdd so I have never thought about it :-) Regards, Zhengyu Xu On 2012-7-31, at 8:27, Δημήτρης Ζέρβας<01ttouch@xxxxxxxxx> wrote: > is it actually safe to format an usb flash to btrfs? won't it destroy the > flash because of the read/writes? > On Jul 31, 2012 2:20 AM, "Zhengyu Xu" <xzy3186@xxxxxxxxx> wrote: > >> On Mon, 2012-07-30 at 17:36 -0400, Kyle wrote: >>> Trying to install Arch on a USB key, I am having trouble getting a >> bootable system. I created a basic BTRFS filesystem and mounted it with SSD >> optimizations and compression. I didn't create any subvolumes or anything >> else that is said to be problematic when booting to a BTRFS filesystem. >> From that point, I followed the installation guide for a normal install. >> However, after reading the documentation for GRUB and Syslinux, my newly >> created install doesn't boot. I looked at the wiki entry for installing to >> a USB key, but it is still written for AIF and grub-legacy. However, the >> main difference I can find doesn't seem to apply, because although it >> mentions that the USB key where grub-legacy is installed is always hd0,0, >> grub2 is supposed to look for the UUID of the disk, which matches correctly >> in /boot/grub/grub.cfg. I also tried setting up this install to boot using >> Syslinux, but both bootloaders just drop me into some kind of shell and >> refuse to boot. Unfortunately, since I am >>> visually impaired and use speech to install and use Arch, I am unable to >> see whether I am in a "normal shell" or a rescue shell, or even what kind >> of issue the bootloaders are having that keeps them from finding a kernel. >> Should I be using a different filesystem other than BTRFS, even though both >> bootloaders are said to support it? Should I not be using compression on my >> filesystem? Could this be a problem that is entirely unrelated to the >> filesystem I'm using? Any help is greatly appreciated. >>> ~Kyle >> >> Did you add usb and btrfs to the hooks array in your mkinitcpio.conf? >> >> Regards, >> Zhengyu Xu >> >> >>
