Images partitioned right? Good USB drives? (Re: Woodhouse on flash storage)

Tiago Marques tiagomnm at
Fri Oct 9 20:57:08 EDT 2009

OCZ Rally 2 4GB has worked fine for me for a year now. If you go for
the OCZ Rally 2 Turbo, it has higher random write speeds(faster boot,
opening apps) but I'm not sure about reliabilty. OCZ has a good
reputation for good reliability on most of it's products.

Using an USB->SD adapter with one of those recommended SD cards might
be a good idea. Some look like pen drives.
Mitch told me that micro Sandisk SDHC 4GB and Transcend micro SDHC
were behaving well in the stress test and I can also say the same for
the Sandisk 4GB SDHC card, class 2.

Best regards,
Tiago Marques

On Sat, Oct 10, 2009 at 12:23 AM, S Page <skierpage at> wrote:
> On Tue, Oct 6, 2009 at 3:10 AM, Mitch Bradley <wmb at> wrote:
>> b) If you must construct a fixed partition layout for use on multiple
>> different devices, align each partition on at least a 4MiB boundary.
>> That means that you "waste" 4M for the partition map (one 512-byte
>> sector padded out to a 4 MiB boundary, but oh well).  For devices 2 GiB
>> or less - the previous generation - maybe 1 MiB alignment would be okay,
>> as such devices are likely to have smaller erase blocks.  Those numbers
>> seem "safe" to me.
> 1.
> Do the F11 / SoaS "overwrite your USB/SD device" XO images follow this
> guideline?
>   cat soas??xo.2gremovable.tar.lzma | lzma -dc - | tar xf - -O > /dev/sdX
> (The way a boot image is created and distributed as multiple
> monolithic 379+ MB files seems crazy -- surely it's just a collection
> of files, tweaks to the existing MBR, and some disk partitioning and
> FS layout requirements.  But that's a different discussion. ;-) )
> 2.
> The old Fedora 10 on XO project specifically recommended SanDisk
> Extreme III SD cards.  Can anyone suggest generally-good brands of USB
> flash drives?
> (I have a cheap USB flash drive that has "gone crazy" after two
> /dev/sdb reblastings; often usb-creator leaves it in a bizarre state
> and dosfsck reports hundreds of errors it can't repair.  Weird.)
> Thanks for all you do!
> --
> =S Page
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