Timeline for How to know if a disk is an SSD or an HDD
Current License: CC BY-SA 4.0
8 events
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| Dec 7, 2022 at 0:35 | history | edited | don_crissti | CC BY-SA 4.0 |
added 659 characters in body
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| Jan 28, 2020 at 16:01 | comment | added | arielf |
This works best for me, but it includes redundant/unwanted loop devices (e.g. due to Ubuntu snaps). A slight improvement is: lsblk -d -e 7 -o NAME,ROTA,DISC-MAX,MODEL which excludes loop devices + adds the model name (manufacturer) and disk capacity.
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| Dec 18, 2019 at 12:32 | comment | added | crysman | this one is better than unix.stackexchange.com/posts/65602/revisions because it lists all devices | |
| Sep 14, 2016 at 20:45 | comment | added | tuk0z |
lsblk reports "0" for all my good old SATA spinning HDDs here (ASROCK mobo). « some USB controllers don't tell that drive is actually non-rotational (for example, USB flash) » @dma_k this is so true --and better this way than the other way for USB wired external spinning HDDs IMHA.
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| Jun 8, 2016 at 18:01 | comment | added | dma_k |
Actually I was looking into various ways because some USB controllers don't tell that drive is actually non-rotational (for example, USB flash) and there is no way in Linux to tell the truth. At the end of the day I have fixed that by creating the explicit rule in /etc/udev/rules.d/90-non-rotational.rules: ACTION=="add|change", SUBSYSTEMS=="usb", ENV{ID_SERIAL}=="SanDisk_Ultra_Fit_*-0:0", ATTR{queue/rotational}="0", ATTR{queue/scheduler}="deadline"
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| May 13, 2016 at 16:30 | comment | added | user |
@dma_k Little wonder, considering it appears to use that one. Try it yourself: strace lsblk -d -o name,rota /dev/sda 2>&1 | grep --context=3 --color rotational
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| Oct 20, 2015 at 10:45 | comment | added | dma_k |
That utility seems to report the same information as in /sys/block/.../rotational.
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| Sep 4, 2015 at 11:02 | history | answered | don_crissti | CC BY-SA 3.0 |