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Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch
From: |
Gary E. Miller |
Subject: |
Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch |
Date: |
Thu, 26 Jul 2018 13:04:41 -0700 |
Yo Alan!
On Thu, 26 Jul 2018 12:41:28 -0700
Alan Scott <address@hidden> wrote:
> So would the same go for this Gary....?
>
> dd if=/dev/urandom | pv | sudo dd of=/dev/sdb bs=1M
Much worse.
Some SD cards and SSD's detect all zeros and just do a trim. Writing
random data will force a write, and wear out your card.
If you want worn out SD cards, I have a large pile to share.
I have no idea what pv is, what is does, or why in the pipe. If you
want to watch progress, just add "status=progress" to the dd.
"sudo" is evil.
Alsmost all SD cards and SSD prefer bs=4M.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
address@hidden Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can’t measure it, you can’t improve it." - Lord Kelvin
pgpFSNaqgBcyg.pgp
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- [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/24
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/25
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch,
Gary E. Miller <=
- Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26
- [gpsd-users] 1PPS NOW working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/28
- Re: [gpsd-users] 1PPS NOW working with RPi 3 B+ and Stretch, Paul Theodoropoulos, 2018/07/28
- Re: [gpsd-users] 1PPS NOW working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/29
Re: [gpsd-users] Fwd: Re: 1PPS not working with RPi 3 B+ and Stretch, Alan Scott, 2018/07/26