How to remount a USB drive
in [UK Mac]
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From: Rowland McDonnell on 22 Jan 2010 06:24 Woody <usenet(a)alienrat.co.uk> wrote: > Rowland McDonnell wrote: > > Peter Ceresole<peter(a)cara.demon.co.uk> wrote: > > > >> T i m<news(a)spaced.me.uk> wrote: > >> > >>> Do you *have* to eject it? > >> > >> Yes, it tidies the file system before ejecting. With something as > >> primitive as a FAT drive, you don't need to. > > > > Oh no? Caches? What about them? With the old MS-DOS way of doing disc > > access, no you'd have no trouble. With modern methods, surely you have > > to unmount first to ensure everything's actually made it into magnetic > > patterns rather than hanging around as packets of electrons. > > Not when you are talking about USB thumb drives, as we are. Why not? > > And you'll have that problem whatever the actual disc *format*. > > But depending on the format depends on if it is a problem. How so? > >> But if you just yank it out, on a Mac, it *can* (but usually doesn't) > >> get some file system corruption. > > > > Doesn't that get fixed automatically these days, what with the whole > > journalling thing? > > FAT drives aren't journalled. Point - but FAT is not a Mac-native format. Rowland. -- Remove the animal for email address: rowland.mcdonnell(a)dog.physics.org Sorry - the spam got to me http://www.mag-uk.org http://www.bmf.co.uk UK biker? Join MAG and the BMF and stop the Eurocrats banning biking
From: Rowland McDonnell on 22 Jan 2010 06:24 T i m <news(a)spaced.me.uk> wrote: [snip] > Just as I have been using knives before HSE put "This is sharp and > could cut you" stickers on them and not hurt myself that often. The HSE says that it is totally unneccessary to put a notice on a knife explaining that it's sharp and might cut you. The HSE also says that it wishes people would stop doing that sort of thing because it makes their life near-impossible due to idiots like you mis-attributing the fault and thus ending up with contempt for the *real* H&S requirements. Please do stop libelling the HSE. The sort of stupidity you mention above is something the HSE is trying to put an end to. [snip] Rowland. -- Remove the animal for email address: rowland.mcdonnell(a)dog.physics.org Sorry - the spam got to me http://www.mag-uk.org http://www.bmf.co.uk UK biker? Join MAG and the BMF and stop the Eurocrats banning biking
From: Rowland McDonnell on 22 Jan 2010 06:25 Woody <usenet(a)alienrat.co.uk> wrote: > Rowland McDonnell wrote: [snip] > > Quite. > > > > Caches... If nothing else, there're caches that need flushing out. > > Not post write caches on a memory stick there aren't. What exactly does that mean? Rowland. -- Remove the animal for email address: rowland.mcdonnell(a)dog.physics.org Sorry - the spam got to me http://www.mag-uk.org http://www.bmf.co.uk UK biker? Join MAG and the BMF and stop the Eurocrats banning biking
From: Andrew Templeman on 22 Jan 2010 06:46 SteveH <italiancar(a)gmail.com> wrote: > Peter Ceresole <peter(a)cara.demon.co.uk> wrote: > > > T i m <news(a)spaced.me.uk> wrote: > > > > > And most pen drives probably are FAT aren't they (as / supplied / by > > > default)? > > > > Yes. And one of my thumb drives is as delivered, still, just in case I > > have to swap files with a PeeCee. But on the Mac, transfers are quicker > > with a Mac formatted drive, so the first thing I normally do is to > > reformat them to the bright side. > > On a related note - why do Macs copy to and from FAT sticks > significantly quicker than Windows boxes do? On my XP machine the default policy is to 'optimize for quick removal' which turns off caching for USB sticks. -- Andy Templeman <http://www.templeman.org.uk/>
From: Woody on 22 Jan 2010 06:53
On 22/01/2010 11:25, Rowland McDonnell wrote: > Woody<usenet(a)alienrat.co.uk> wrote: > >> Rowland McDonnell wrote: > [snip] > >>> Quite. >>> >>> Caches... If nothing else, there're caches that need flushing out. >> >> Not post write caches on a memory stick there aren't. > > What exactly does that mean? It means that on a device marked as removable, information is written as soon as it is available, rather than when it is more efficient to do it, on the basis that it may be removed from the system at any time. A normal disk has a read and write cache. A removable stick (excluding one on windows marked for caching) has a read cache but not a write cache. -- Woody |