Tom's Hardware > Forum > Windows Vista > Configuration & Customize > Readyboost and sd card
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oldjj   02-19-2009 at 01:51:17 PM

can anyone explain this?? I wanted to use a 2 gig sd card in a built card reader for readyboost but the option for readyboost doesn't show up in properties when the card is in the reader. so I put the sd card in an external reader and plug it into usb slot and readyboost works. now remove the card from the external reader and put it in the built in reader and now it works for readyboost. reboot the computer and it doesn't work and have to put it in the external reader again before it will work in the built in reader?? too strange. this is a sony vgn-n365e with vista home premium.

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4ryan6   02-23-2009 at 01:39:11 PM
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I found Ready Boost to be more trouble than its worth even with a USB flash drive, so the best advice I have, is forget Ready Boost and move on.

However if you're determined to learn the hard way too, just use the external card reader.

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oldjj   02-23-2009 at 01:51:14 PM
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that was a great non-answer. thank you.

Message quoted 1 times
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loneeagle   02-23-2009 at 08:29:32 PM
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Have you done benchmarking on your sd? There is a minimum required. I use to try it and found that sometime was available and some time not. My card was probably borderline with the minimum. I know SD card are not expensive but also sometimes not really fast.

Quote :

The device must be capable of 2.5 MB/s read speeds for 4 KB random reads spread uniformly across the entire device and 1.75 MB/s write speeds for 512 KB random writes spread uniformly across the device



Source: http://en.wikipedia.org/wiki/ReadyBoost

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4ryan6   03-02-2009 at 06:44:22 PM
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oldjj wrote :

that was a great non-answer. thank you.




If you're going to use Ready Boost, a speed approved USB Flash Disk is the way to go, not an SD Card.

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oldjj   03-03-2009 at 12:20:42 AM
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i am having inconsistent results with a pny sd card but a kodak sd card works every time. i've tried a couple different usb flash drive that don't work.

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Anonymous   07-27-2009 at 03:54:14 AM
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sounds like the inbuilt card reader isnt very good.

You put it in external card reader then windows clasified good for ready boost places its marker on it.

you reboot it tries to read files to ready boost finds internal card reader unable to meet minimum speeds turns off ready boost.

that'd be my guess.

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