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    válasz Intruder2k5 #4810 üzenetére

    Fstab-ban kell kiszedni, mert ugye ez az extroot partícióm volt.
    Amúgy itt a megoldás: [link]

    Itt a konkrét válasz, hogy mi is okozza:
    The slowness comes from the fact that (all!) flash memory uses much bigger blocks that have to be deleted/written at once. E.g. if the erase block size is 64k, then writing 32k takes the same amount of time as writing 64k at once, so writing 2 * 32k needs twice as long resulting in half the seen speed. Disabling snyc allows linux to cache the first 32k to wait until full 64k are there to write. HDDs have a block size of 512 (some have 4k), so the impact there is much lower.

    Try increasing your block size when doing your speed test, and you should see a speed increase until you reach the optimum block size. Then there should be next to no speed difference.

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