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 Post subject: Single disk drive - Possible to flip disk when 1 head fails?
PostPosted: August 14th, 2019, 11:24 
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Joined: June 11th, 2017, 1:16
Posts: 19
Location: Australia
For a drive with a single double sided disk with 2 heads, if one head fails but drive will still initialise ok, does anyone know if theoretically you'd be able to image half the drive with the working head, then flip the disk over and image the other side with that working head?


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 Post subject: Re: Single disk drive - Possible to flip disk when 1 head fa
PostPosted: August 14th, 2019, 11:30 
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Joined: June 11th, 2013, 17:01
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Location: Phoenix, AZ USA
If you think about it turning the disk over will make it spin backwards. Get a piece of card and mark an arrow on it pointing the same way on both sides. Then turn the card over and you will see it would spin backwards.

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 Post subject: Re: Single disk drive - Possible to flip disk when 1 head fa
PostPosted: August 14th, 2019, 13:33 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
jordash wrote:
For a drive with a single double sided disk with 2 heads, if one head fails but drive will still initialise ok, does anyone know if theoretically you'd be able to image half the drive with the working head, then flip the disk over and image the other side with that working head?


Well,
That Would Be a Nice Experiment ,But it should not work cos the servo info will not match the sector that its trying to fetch ,Generally when a head fails it should be properly inspected so that we come to know why it failed ,If its crashed on platter recovery would be very hard ,Which Drive is it BTW

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 Post subject: Re: Single disk drive - Possible to flip disk when 1 head fa
PostPosted: August 14th, 2019, 14:05 
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Joined: September 16th, 2015, 9:06
Posts: 89
Location: Poland
jordash wrote:
then flip the disk over and image the other side with that working head?

You can hear Satan calling this way, like it was with vinyl's backmasking :lol:

But no, it will not work, sorry.

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 Post subject: Re: Single disk drive - Possible to flip disk when 1 head fa
PostPosted: August 14th, 2019, 15:48 
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Joined: February 2nd, 2019, 1:21
Posts: 157
Location: Sri Lanka
100% not working.


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 Post subject: Re: Single disk drive - Possible to flip disk when 1 head fa
PostPosted: August 15th, 2019, 9:19 
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Joined: June 11th, 2017, 1:16
Posts: 19
Location: Australia
Amarbir[CDR-Labs] wrote:
Which Drive is it BTW


1tb 3.5" Hiatchi HDS721010DLE630. Damn, head replacement it is then.


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