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sqb
Ensign
Joined: Jun 07, 2004
Posts: 4
Location: Network+, mcp, mcsa, A+
Status: Offline
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 Posted: Sun Jun 13, 2004 11:55 pm Post subject: confused... |
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C an s o m e on e on t h e f o r u m an s w e r e t h i s q u e s t i on . . .
W h a t i s t h e m in i m u m n u m b e r o f p a r t i t i on s n e e d e d t o f u l l y u t i l i z e a 5 g i g h a r d d r i v e un d e r w in d o w s 9 5 b ?
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I b e l i e v e w in d o w s 9 5 b c a m e w i t h f a t 3 2 f i l e s y s t e m , i f s o t h e an s w e r e i s 1 ? ? ?
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Hubert
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Joined: Apr 09, 2004
Posts: 39
Location: A+
Status: Offline
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| Posted: Tue Jun 15, 2004 10:21 am Post subject: |
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Y o u ' r e r i g h t t h e r e s q b . W in d o w s 9 5 b a l s o kn o wn a s W in d o w s 9 5 O E M S e r v i c e R e l e a s e 2 i s t h e f i r s t W in d o w s t o s u p p o r t F A T - 3 2 . N o w I ' m g on n a f o l l o w w i t h a l i t t l e b i t o f m a t h s s o d on ' t w o r r y i f y o u d on ' t f e e l c o m f o r t a b l e w i t h n u m b e r s j u s t r e m e m b e r t h a t t h e s i z e i s c a l c u l a t e d a s n u m b e r m a x i m u m n u m b e r o f s e c t o r s p e r c l u s t e r , w h i c h g i v e s y o y t h e m a x i m u m s i z e o f a c l u s t e r , an d t h en m u l t i p l i e d b y m a x i m u m n u m b e r o f c l u s t e r s p e r v o l u m e .
T o c a l c u l a t e t h e s i z e o f p a r t i t i on s u p p o r t e d b y f i l e s y s t e m t a k e t h e m a x i m u m n u m b e r o f s e c t o r s p e r c l u s t e r ( 6 4 in F a t - 1 6 ) t h e n u m b e r o f b i t s u s e d b y f i l e s y s t e m t o m an a g e a l l o c a t i on un i t s ( c l u s t e r s ) w h i c h i s 1 6 - b i t f o r F A T - 1 6 an d g i v e s y o u 6 5 , 5 3 6 m a x i m u m c l u s t e r s ( 0 0 0 0 h - F F F F h ) - 1 1 c l u s t e r n u m b e r s r e s e r v e d f o r v a r i o u s p u r p o s e s . T h i s g i v e s 6 5 , 5 3 6 - 1 1 = 6 5 , 5 2 5 - 1 ( r e s e r v e d b y M i c r o s o f t ) = 6 5 , 5 2 4 c l u s t e r m a x i m u m in F A T - 1 6 p a t i t i on .
N o w i f a s e c t o r i s a l w a y s 5 1 2 b y t e s in s i z e s o 6 4 x 5 1 2 = 3 2 K B p e r c l u s t e r x n u m b e r o f l u s t e r s = 2 G B . O r y o u c an g o b y m a x i m u m n u m b e r o f a v i l a b l e s e c t o r s . C on s i d e r in g s p a c e n u m b e r o f s e c t o r s r e s e r v e d f o r b o o t r e c o r d t w o c o p i e s o f F A T an d 3 2 s e c t o r s f o r r o o t d i r e c t o r y , t h e m a x i m u m s i z e o f F A T v o l u m e i s 4 , 1 9 4 , 0 8 1 s e c t o r s w h i c h m u l t i p l i e d b y t h e s i z e o f a s e c t o r ( 5 1 2 ) g i v e s 2 G B .
W in d o w s N T / 2 k / X P c an u s e 1 2 8 s e c t o r s p e r c l u s t e r t h u s e x t en d in g t h e m a x i m u m v o l u m e t o 4 G B b u t n o o t h e r s y s t e m w i l l r e a d s u c h p a r t i t i on s s o n o b o d y r e a l l y u s e s t h e m , m a k in g i t m o r e o f a t h e o r e t i c a l p o s s i b i l i t y .
I f y o u w an t t o d o t h e c a l c u l a t i on f o r F A T - 3 2 j u s t r e m e m b e r t h a t i t u s e s 2 8 - b i t n u m b e r s t o m an a g e c l u s t e r s .
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Dave
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Joined: Apr 07, 2004
Posts: 311
Location: A+, Net+
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| Posted: Tue Jun 15, 2004 12:30 pm Post subject: |
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u m m d on t q u o t e m e b e c a u s e i h a v e l on g s in c e g i v en u p on F A T 1 6 b u t i w i l l h a v e t o s a y t h a t t h e an s w e r w o u l d b e C
H o w e v e r , y o u w o u l d b e c r e a t in g t h e m a x i m u m a m o un t o f w a s t e . F A T 3 2 h a d t h e a b i l i t y t o r e s i z e s e c t o r s f r o m 2 k b u p t o 3 2 k b an d i w a s un d e r t h e i m p r e s s i on t h a t F A T 1 6 c o u l d a l s o . b u t i c o u l d b e w r on g .
i d o r e m e m b e r c r e a t in g p a r t i t i on s in W in 9 5 an d D O S t o m a x i m i z e h a r d d r i v e a l l o c a t i on s . Y o u s e e , a 3 2 k b a l l o c a t i on c an on l y h o l d on e f i l e . i f t h e f i l e i s on l y a h un d r e d b y t e s , t h en 3 1 , 9 0 0 b y t e s w i l l b e un u s e d an d e m p t y . c r e a t in g s m a l l e r p a r t i t i on s w o u l d h e l p t o r e d u c e w a s t e d s p a c e f r o m t h e s e t y p e s o f s c en a r i o s . b u t t h a t c r e a t e d an o t h e r w h o l e h o s t o f p r o b l e m s . n a m e l y w h e r e y o u a r e m o s t l i k e l y t o en c o un t e r s m a l l f i l e s , ( w in d o w s s h o r t c u t s , I E f a v e s an d c a c h e , e t c ) .
b u t t h a t w a s w h en t h e h a r d w a r e c o u l dn t o v e r c o m e t h e l i m i t a t i on s o f t h e s o f t w a r e l i k e i t c o u l d n o w an d w h en m o s t p e o p l e s p en t a s i gn i f i c an t a m o un t o f t h e i r t i m e t r y in g t o m a k e t h e i r c o m p u t e r r un f a s t e r . N o w w i t h a d v an c e d h a r d w a r e , i t h in k t h e g en e r a l u s e r s l e v e l o f e x p e r t i s e h a s p l u m m e t e d . m o s t d on t e v en p e r f o r m b a s i c m a in t a in en c e r o u t in e s an y m o r e b e c a u s e t h e y h a v e m o r e p o w e r t h an t h e y kn o w w h a t t o d o w i t h . b u t i g u e s s , t h a t i s w h e r e w e c o m e in . . .
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