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Windows Thread, Treat USB pendrive as SSD? in Technical; Just red wine induced thinking here but has anyone tried running Win(7 or XP) off a bootable pendrive instead of ...
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    SimpleSi's Avatar
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    Treat USB pendrive as SSD?

    Just red wine induced thinking here but has anyone tried running Win(7 or XP) off a bootable pendrive instead of an internal hard drive?

    Was it better or worse performance?
    Si

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    localzuk's Avatar
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    Quote Originally Posted by SimpleSi View Post
    Just red wine induced thinking here but has anyone tried running Win(7 or XP) off a bootable pendrive instead of an internal hard drive?

    Was it better or worse performance?
    Si
    I've booted various OS's from USB - it is much, much worse performance. The flash memory in a USB stick is pretty low quality compared to an SSD. Add in the bus itself and its overheads, and transfer speeds are much lower than you'd want. Lower than a standard hard drive in my experience.

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    SYNACK's Avatar
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    Windows won't boot off a USB connected drive only WinPE. Speed wise it might be better for some stuff but you'd want a fast one and it would be rather limited by both the USB bus and the lack of speed of the memory. There is also a lower RW cycle count a the memory chips used are lower quality than those used in an ssd as well as the lack of error correction/wear leveling on the USB.

    You can boot off a USB drive for a quickish boot/op on certain OSs, VMWare ESXi is designed to allow boot from a USB key and you can put many linux distros on one. It is also a feature of Windows 8 but prior versions of Windows were restricted from booting off a portable device.

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    SimpleSi's Avatar
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    Ok - Plan B

    What about an SD Card (in netbook/laptop slot thingy)?

    Can you boot 7/XP off that?

    Si

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    The only way you will get decent performance out of a USB flash drive is if you buy one of the expensive flash drive-sized USB 3.0 SSDs. e.g. SuperTalent RC8 (87 for 25GB) or Kingston DataTraveler HyperX 3.0 (98 for 64GB).

    Should be perfect for a Windows To Go drive.

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    localzuk's Avatar
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    Quote Originally Posted by SimpleSi View Post
    Ok - Plan B

    What about an SD Card (in netbook/laptop slot thingy)?

    Can you boot 7/XP off that?

    Si
    Most SD card readers I've ever seen are USB devices, even the built in ones - they're just hard-wired to the USB bus directly.

    So, you still end up with the same slowness. The flash involved is even slower than USB too - Class 10 SDHC is 10MB/s, unless you're willing to spend on some of the 'high end' cards (eg. 32GB 600x SD card is 120+).

    But as I say, you may well find that the reader is hampering the transfer speeds in between.

    Theoretically, if you could find a bus which could handle it, SD can run at over 800Mb/s, which is ridiculously fast, but I don't think anyone makes cards that fast at the moment.

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    localzuk's Avatar
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    Quote Originally Posted by Arthur View Post
    The only way you will get decent performance out of a USB flash drive is if you buy one of the expensive flash drive-sized USB 3.0 SSDs. e.g. SuperTalent RC8 (87 for 25GB) or Kingston DataTraveler HyperX 3.0 (98 for 64GB).

    Should be perfect for a Windows To Go drive.
    Note that even with those, you'll want USB3 rather than USB2 to get decent speeds out of them.

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    Quote Originally Posted by SYNACK View Post
    Windows won't boot off a USB connected drive only WinPE.
    Unless you use something like WinVBlock or FiraDisk. See the Reboot.pro forums for more details.

    Quote Originally Posted by SYNACK View Post
    prior versions of Windows were restricted from booting off a portable device.
    Hyper-V Server can boot from a USB flash drive or SD card, just like ESXi.

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    localzuk's Avatar
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    Quote Originally Posted by Arthur View Post
    Unless you use something like WinVBlock or FiraDisk. See the Reboot.pro forums for more details.


    Hyper-V Server can boot from a USB flash drive or SD card, just like ESXi.
    And Windows 8 will have Windows to Go, if you're crazy and like Windows 8 that is...

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    Quote Originally Posted by localzuk View Post
    Note that even with those, you'll want USB3 rather than USB2 to get decent speeds out of them.
    That's why I mentioned USB 3.0.

    USB 2.0 just isn't worth bothering with.

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    Quote Originally Posted by localzuk View Post
    And Windows 8 will have Windows to Go, if you're crazy and like Windows 8 that is...
    One of the best things about Windows 8 (and consequently Windows to Go) is that it will include USB 3.0 drivers out of the box. Unlike Windows 7, you won't have to mess around integrating them using DISM.

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    Unless you use something like WinVBlock or FiraDisk. See the Reboot.pro forums for more details.
    That stuff reads like hardcore geeky
    Si
    PS I'm talking USB 2 - it was an idea to try out on old laptops

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    Quote Originally Posted by SimpleSi View Post
    it was an idea to try out on old laptops
    Windows 98 Live CD?

    I suppose you could try UBCD4Win or Ubuntu/Xubuntu, but that's probably not what you are looking for?

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    I actually have an ISO image of xp where you can install it on to a usb stick. You have to edit the cab files so it doesn't flush the USB channels during the installations. I found the instructions a few years ago on how to do it. The speed is poor and it locks it to that hardware type meaning it isn't hardware independent. Also as its a usb with limited read write cycles you could only run it for a month solos before it dies. If any ones interested I can dig up the instructions and/or ISO image.

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