On Wed 27 Sep 2017 at 13:14:41 (-0400), Gene Heskett wrote: […] > Here's what I found that worked after wiping the part table out: > fdisk > o > w > > which made and wrote an empty dos part table. > then > sfdisk /dev/sda > , 1G > , 8G > , > write > > Which made a 1G boot partition, an 8G destined to be swap, and the rest > destined to be an ext4 partition > > mkfs.vfat /dev/sda1 > mkswap /dev/sda2 > mkfs.ext4 /dev/sda3 > > then had apt install hdparm and busybox-static which hdparm needed. > > hdparm's output > root@rock64:~# hdparm -tT /dev/sda3 > > /dev/sda3: > Timing cached reads: 1106 MB in 2.00 seconds = 552.98 MB/sec > Timing buffered disk reads: 354 MB in 3.00 seconds = 117.93 MB/sec > > So the alignment must be ok if it gives those speeds. OTOH, they are read > speeds too. Thats where I am ATM. > > The clue was in the sfdisk man page, it automatically works with the > disks native sector sizes when using the above syntax, where the comma > says start at the earliest AVAILABLE sector in each case.
[…] > The pi seems much happier now that it has an insane amount of rotating > swap, so thats next to setup on this rock64. Maybe the next person with > a similar problem will be helped by the above list of what I did. Hopefully they will be using stretch / sfdisk≥2.26 if they use sfdisk at all. Its man page on jessie (and earlier) looks horrific. Glad you got it all sorted. Cheers, David.
