-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2014-09-07 10:02, jdd wrote:
Le 06/09/2014 22:48, jdd a écrit :
Using
dd bs=4096 if=/data/telechargements/download/isos/openSUSE-13.1-DVD-x86_64.iso of=/dev/disk/by-id/usb-General_USB_Flash_Disk_05311100000000A8-0\:0 &
Other concoction: cp /data/.../openSUSE-13.1-DVD-x86_64.iso /dev/disk/by-id/usb-...
one needs to *not* use the "part1" part (two choices, with and without). It's pretty obvious, but the iso have to be written on the disk, not the first partition.
Of course! Where did you get the idea that you could write one of the partitions? It is always, and always has been, write the whole iso file to the whole destination device. On 2014-09-07 10:04, jdd wrote:> Le 07/09/2014 10:02, jdd a écrit :
I could write 6 device at the same time, in approx 20 mn, including typing the
and... do not expect to work on your computer during the write, 6 writes makes a huge stress on the system (i5, 8Gb ram).
I would indeed expect to be able to continue using the computer, it should be no stress at all. USB 2 can transfer 480 Mbit/s maximum and total, about 50 MB/s. A good hard disk can provide double than that, so the slow component here is the USB. The rest of the time the system is just waiting for the USB to be ready again, which on a good design means doing something else (assuming that the chipset does "command and forget" things without CPU). However, a good motherboard can have multiple USB controllers, and each one can provide the max speed on the bus connected to it... Meaning that the total speed can go way over that 50MB/s in that configuration. Then, the internal/main hard disk would be the slow component in the mix, and the system would crawl... But you were using a hub, so this can not be the case at all. In that case, I would do the copy process with both nice and ionice in the line: nice ionice -c Idle cp /data/.../openSUSE-13.1-DVD-x86_64.iso \ /dev/disk/by-id/usb-... It will take longer, but you can use the machine. It the cpu load maxes (it should not) then you can use "cpulimit" instead. But considering you were using a hub, thus a single controller, I see no reason for the impact on the machine. - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlQMSqAACgkQtTMYHG2NR9U67gCcCIwGFg6GI8Vz/8l+MyfLiBAy D3kAoIVm7pUGwbkW6cAk9jC3woCdeFJc =68PU -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org