From mboxrd@z Thu Jan 1 00:00:00 1970 From: CACook@quantum-sci.com Subject: Cannot Create Partition Date: Sun, 23 Jan 2011 10:07:54 -0800 Message-ID: <201101231007.55046.CACook@quantum-sci.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: linux-btrfs@vger.kernel.org Return-path: List-ID: On /dev/sda I have sda1 which is my / bootable filesystem for Debian formatted ext4. This is 256MB on a 2TB drive. I want to set up the rest of the drive as BTRFS for various functions, and I presume that I first have to create a partition using fdisk for this? Since my first part is ext4? So I: # fdisk /dev/sda WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): p Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 243202 1953514583+ ee GPT Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 2 No free sectors available Command (m for help): ------------------------------------------------- Whaa? Maybe it's possible that I just mkfs.btrfs /dev/sda and it will set up -only- the remaining space, but I'm afraid that this may destroy my OS. Also, what if I want to set up the whole drive as BTRFS? Could this be bootable, and can the canned Debian kernel load the BTRFS driver for boot at install? Or would I boot to the CD, mkfs.btrfs the drive, then install Debian? Anyone tried this?