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Re: BIOS size limit for USB flash drives

On Mon, Sep 07, 2015 at 07:43:12PM -0400, shawn wilson wrote:
> On Sep 7, 2015 9:47 AM, "Ken Heard" <[1]kenslists@teksavvy.com> wrote:
> >
> >
> > Is there any limit to the size of a USB flash drive with the ext2 file
> > system encrypted on it which can be addressed through the BIOS
> > interface?  (I am using Debian Jessie.) The largest size I am now
> > using is 32 gb drives but would like to use 64 gb or even 12 gb drives.
> >
> IIRC, 32 GB is the limit of vfat (which uefi uses for boot). I can't think of
> any other limitation here. As already stated, ext2 is 2 TB. Old bios needed the
> initial kernel in the first few sectors - basically, for lots of these reasons,
> make boot a different partition (shouldn't need more than a gig.

Just as a point of interest, I understand that most BIOS limits are
limits in the ATA command set (that is, PATA and SATA drives experience
these issues). Is USB mass storage ATA-based or SCSI based? If it's SCSI
based, then most of the rule-of-thumb BIOS limits don't apply.

For more information, please reread.

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