On 2/27/2015 3:06 PM, m.roth at 5-cent.us wrote: > Alignment's easy: using parted (the user-hostile program), if you do go in > with parted -a optimal /dev/drive, and do > mkpart pri ext4 0.0GB 100% (for non-root drives, for example), it's > aligned correctly. i found -a optimal to do weird things, and almost always complain. I just use -a none now, and specify partition start in (512b) sectors, like.. # parted /dev/sdc align none mklabel gpt mkpart pri 512s -1s don't start at 0, as thats where the MBR or GPT has to go. 512 sectors is 256K bytes, which puts you on a erase block boundary with most SSD's as well as HD's. -1s is end of the disk. -- john r pierce 37N 122W somewhere on the middle of the left coast