Date: Thu, 04 Nov 2004 21:39:50 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: dwhite@gumbysoft.com Cc: freebsd-current@freebsd.org Subject: Re: USB Key Disk Boot Message-ID: <20041104.213950.54451319.imp@bsdimp.com> In-Reply-To: <20041102104503.D63929@carver.gumbysoft.com> References: <BDACFC62.7B989%joe@via.net> <20041102104503.D63929@carver.gumbysoft.com>
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In message: <20041102104503.D63929@carver.gumbysoft.com>
Doug White <dwhite@gumbysoft.com> writes:
: Note that I creatd that from a second system and dd'd the flash card over
: so UFS wouldnt' burn out the flash, but I suppose you could install direct
: to it if you odn't plan on writing to the key afterward. UFS does exra
: bad things to flash (think superblock updates), so you don't want to
: leave it read/write for very long.
The superblock update isn't so bad because most flash devices wear
average. The access time update, however, tends to put a lot of load
on the part. Even that isn't so bad. We have several flash cards
that we run read/write and rarely do they go bad unless left that way
for months.
Warner
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