Disque dur bootable non reconnu dans le bios

Merci exla pour votre réponse

J'ai commencer la procédure à suivre mais je suis un peu un noob dans msdos, quand je tape :
X:\sources>/FixMbr ( ou les autres ) il me dit que ce n'est pas reconnu en tant que commande interne.

J'imagine que je ne tape pas la commande comme il faut mais je n'ai pas trop d'explication à ce sujet sur le site.
Si vous pouvez m'aider encore merci

re

allez a l' invite de commandes et taper bootrec /fixmbr

puis ensuite tapez bootrec /fixboot

Je ne crois pas que ce soit un problème de mbr, le dd sata n'est pas détecté dans le bios.

Je viens de faire bootrec/fixmbr puis bootrec/fixboot, les opérations on réussi mais au redémarrage le DD n'est toujours pas reconnu dans le bios et toujours écran noir

Je pense qu'admiralc à raison, j'ai fait toutes les commandes écrite sur le site et malheureusement le DD n'est toujours pas détecté dans le bios.

Je comprend mais pour mon problème cela ne viens pas de là car tout fonctionnait bien avant que je rebranche le DD avec vista. Je pense que vista à désactivé le boot de seven . Je suis en train de faire les manipulations d'exla et je vous tiens au courant si cela ne fonctionne pas

Merci sigurt de nous tenir au courant aussi si celà fonctionne pour en faire profiter tout ceux que celà pourrait concerner, la grande expérience de exla est toujours appréciée.

Je suis convaincu que si tu changes ton fil sata qui est connecté sur sata1 (qui doit être un 30awg bon pour une fréquence d'environ 275hz) pour un fil 26awg pour une fréquence d'environ 410hz ton problème sera réglé, le fait qu'il fonctionnait bien avant ne veut rien dire. Voici ce qu'un technicien a expérimenté le tout est en anglais, mais en gros, il a constaté que le fait de changer le cable sata pour un de meilleure qualitée a corrigé son problème
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20th April 2006, 8:18 PM #1
Biovore
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Posts: 525 SATA Question: 26 AWG or 30 AWG cables?

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One for the cable guys:

What's the difference (if any) between 26 AWG and 30 AWG SATA cables??

I have a couple of each and I'm wondering which would be preferable to use with my shiny new Raptor 150 which should be touching down tomorrow .
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21st April 2006, 9:19 AM #2
CD
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AWG is the thickness of the wire right? bigger number means thicker cable... the difference should be negligible for short distances (such as in your computer case)
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21st April 2006, 10:50 AM #3
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Quote:
Originally Posted by CD
AWG is the thickness of the wire right? bigger number means thicker cable... the difference should be negligible for short distances (such as in your computer case)


Think you'll find that 30awg is THINNER than 26awg.
If I had a chioce i'd go for the 26awg, mind you I doubt that it would have any performance difference.
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22nd April 2006, 12:12 AM #4
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24th April 2006, 6:42 PM #5
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Where on earth can I get 26 AWG SATA cables?!! This sounds good!

I am fed up with cheap shitty SATA cables.
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13th June 2006, 11:44 AM #6
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Does anyone have an answer to this question as opposed to guessing?

If you have a choice, is 26AWG preferable?


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13th June 2006, 11:52 AM #7
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Quote:
Originally Posted by Zardoz
Where on earth can I get 26 AWG SATA cables?!! This sounds good!
I am fed up with cheap shitty SATA cables.

i have 4 short 26AWG cables.. 2 comax and 2 spectra-strip
the 2 comax cables came with a giga-byte motherboard, the 2 spectra-strip came with a supermicro motherboard.
i have 8 actuone cables that do not say what 'awg' rating they are but the cables do look different to the afore mentioned 4x 26AWG cables.. the 8 actuone cables are divided in the middle
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13th June 2006, 3:11 PM #8
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There is little to no electrical difference in this case to choose one or the other with a very very slim advantage for the 26awg over the 30, but the 26 will be mechanically stronger and durable
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13th June 2006, 3:16 PM #9
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I really don't think the cable gauge will make much difference, until you start using the external SATA capabilities and your 6', 30AWG cable was causing too much resistance to make a good connection... (This is why standards were invented though).

Hey, I've got some 0AWG cable here if you want to try and jam it in a crimping tool!

I daresay we'll find most of the manufacturers try and squeeze as much "product x" as they can out of their supply of copper. It is getting REALLY expensive - going from 26AWG to 30AWG signal wire in your SATA cable might save them $0.01 per cable... Now at 1 million cables per order, you've just saved $10,000.00....... Big saving for a company!


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14th June 2006, 5:55 AM #10
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so do you think that's the only reason? ie. to save the 1c per cable.

the 26AWG's definitely feel tougher & less bendable. The 30AWG's are thinner and bend easily. I wonder if there is any difference in terms of data transfer between the two.


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31st July 2008, 10:55 PM #11
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I hate to dredge up an old thread but I cam across this when looking into my sata problems.

I've recently rebuilt a file-server with 5x750gb,5x500gb (both raid5) and 2x200gb (raid1 boot) in one nice big ol case. Everything was fine untill recently the set of 500gb drives started acting up. So I pulled it all down tested each drive individually and found no errors. This is after a full read test and a full drive test with the WD tools so it just didnt make any sense. I had also tried limiting the drive speeds to SATA1 and also enabling SCC (spread spectrum clocking) which should reduce interference but no joy.

The drives themselves are connected to a 5port sata port multipler (silicon image) and then each port multipler is linked to a 2port PCIe sata card. So I fugred do some testing swapped both sets of 5 drives, e.g. moved each set onto the opposite port multiplier which I know is working. Still no go. So to keep going I grabbed my old PCI 4port sata card and threw that in, almost seemed to make it worse, either errors or the card locking up during boot which just didnt make sense.

So next thing was to swap out all the cabling on the disks playing up, I had another spare set of 30AWG sata cables and put them in. Same issue again, errors when accessing them or just being flakey. It was then I noticed the other drives not having a problem were all using 26AWG sata cables.

So today I grabbed a set of 26AWG cables and chucked them in and low and behold away goes the problem! Still rebuilding the array over 85% done but no errors and getting past 1% is always a good sign

Never would have expected the thin cables to be an issue as i've used them on plenty of machines in the past and many of them were brand new (ordered a bulk set recently). My best guess is that on their own or with only a couple drives in close together that they are ok but once you have a large number of disks they suffer from interference.

What gets me is that I found a stack of these 30AWG cables in my motherboard box for a mobo that has 8 sata ports...


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Alors depuis tout à l'heure, j'ai débranché le DD et je l'ai installer sur un autre pc avec win 7 en 32 bits, le DD à été reconnu sans souci que ce soit dans le bios ou dans windows, j'ai comparer les 2 os pour voir si je trouvait quelque chose de différent, j'ai rien trouvé. J'en ai profiter pour changer les connections d'alim et sata ainsi que la pile cmos pendant 1 heure. Toujours pas de différence.
Maintenant je me pose la question à savoir si je change le bios mais apparament d'autres l'on fait et cela ne résout pas le probleme ou alors réinstaller l'os mais pareil d'autres on eu des problèmes par la suite.
Je vais remettre mon autre os avec vista en attendant de trouver la solution, en esperant que quelqu'un m'apporte la solution.

Oui je fait ça c'est un truc de fou.
Là je viens de remettre mon DD avec vista sur le port sata 4 et mon pc fonctionne normalement en bootant sur vista, et l'autre DD est connecté sur le sata 1 avec seven ( reconnu dans le bios ), j'y ai acces à tout mes fichiers dans vista mais si j'essaie de booter sur seven une fois que le bios est charger il me dit " no hard disk detected " et l'écran noir apparait apres. Depuis tout a l'heure j'ai encore essayer pleins de modif dans le bios mais rien à faire.
Je sais pas ce qui s'est passé mais quand j'ai rebrancher le DD avec vista la premiere fois, il à été long au démarrage puis il a booter direct sur vista et depuis impossible de revenir sur seven !!?

re
en ligne de commande
Saisir: chkdsk c: /F
Si l'ordinateur demande si vous voulez faire la vérification au prochain redémarrage, confirmez avec O en Entrée, puis redémarrez votre ordinateur.

merci de bien vouloir m'aider. c'est vraiment sympa. Je testerai ça demain et reviendrai vous dire ce qu'il en est.

re

ok

bonne nuit

bon courage sigurt je lis, les évolutions....merci a ceux qui l'aide! ...je reste la pour suivre l'affaire