On Tue, 8 Mar 2016 00:20:08 +0100 [email protected] wrote:
> I'm having some problems with disks. Probably because I still don't
> understand enough of how BSD manage them:
> 
> 1. I was going to install -current on a USB flash drive. I did the
> install media using install59.fs and booted. I scape from installer to
> shell because I wanted to wipe the drive using dd(1) and to create a
> RAID partition (for FDE). I could not find the disk on /dev/, however.
> The system print on screen that the disk is located at "sd5" interface
> ("dmesg | grep sd" confirm this), but I cound not find it using "disklabel
> /dev/sd5". The only interfaces there was sd0 and wd0, none was my disk.
> How can I find it? The ./install script can find the sd5 normally, but I
> can't find it manually.

# (cd /dev && ./MAKEDEV sd5)

> 
> 2. I gave up of the FDE idea temporarily and I just did the install
> normally. No problem to install, but the speed of the system was too
> slow... at the point that it was basically unusable (>4 hours to install
> 10 packages and ~4 minutes to startx).
> The device, a USB flash drive, have about 10MB/s write speed. It's kinda
> slow, but I don't think this was the cause of the slowliness. I checked
> the signature of the snapshot and the installed sets had no problem with
> SHA256 too, so it's not a problem with corrupted snapshot.
> 

on quick way to check to check if it is the drive itself is to use dd:

# dd if=/dev/zero of=/mnt/testfile bs=1M count=20

but if the install was not slow that is unlikely to be the problem.

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