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I'm installing Ubuntu on a USB drive and it's super slow, i supuse that's because of the speed of the USB device but I wasn't able to find anywhere the recomendad write and read speed for Ubuntu does anyone know?

Joel Imbergamo
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  • There is no official recommendation, other then "the higher the better". If possible, use USB 3.2 with 20Gbps speeds. – mikewhatever Dec 25 '17 at 13:00
  • It is not the top read and write speed which matters, it's the read and write speed for small operations; a general read/write speed of 20 MB/sec is more than sufficient for normal use. Most flash drives have ridiculously low write speeds for small operations. If you test your devices with CrystalDiskMark for example, avoid trying to use a device which shows a write speed lower than, let's say, 0.5 or 1 MB/sec for "4K random" write operations. – AlexP Dec 25 '17 at 15:57
  • @mikewhatever I've been googling USB 3.2 and coming up empty. Do you have a link? The fastest I've found is USB 3.1 generation 2 (or USB type C). Having a Thunderbolt 3 on this new rig it would be fun (but not needed) to have a high speed USB thumb drive. – WinEunuuchs2Unix Dec 25 '17 at 18:39
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    @WinEunuuchs2Unix Here you go: https://www.theverge.com/circuitbreaker/2017/7/25/16026724/usb-3-2-usb-c-specification-charging-data-transfer-cables and https://techreport.com/news/32622/usb-3-2-spec-allows-for-20-gbps-over-existing-type-c-cables and http://www.trustedreviews.com/news/usb-3-2-care-3173569 ... – mikewhatever Dec 25 '17 at 19:17
  • @mikewhatever Thanks very much for new reading material :) – WinEunuuchs2Unix Dec 25 '17 at 19:20

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Check out what the Rufus developer said about USB speeds needed for another OS: https://superuser.com/a/1447105/35525

David d C e Freitas
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