I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
I installed smartmontools but the disk is not even recognized by my system as a /dev/sd* device and therefore not accessible to smartd (at least as far as I know it.)
Any suggestions for what I could try? I am running CentOS 7.
Thank you.
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
I installed smartmontools but the disk is not even recognized by my system as a /dev/sd* device and therefore not accessible to smartd (at least as far as I know it.)
Usually such devices had an ide or sata port and the USB connection was made with an interface module. Maybe you can connect the device directly with an ide or sata adapter and see if it shows up there.
It's also quite normal that a drive doesn't spin up after being powered of for a long time. Moving the drive around in your hand so that the disks can turn inside can help to make them going.
Regards, Simon
On 09/30/2020 03:21 AM, Simon Matter wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
I installed smartmontools but the disk is not even recognized by my system as a /dev/sd* device and therefore not accessible to smartd (at least as far as I know it.)
Usually such devices had an ide or sata port and the USB connection was made with an interface module. Maybe you can connect the device directly with an ide or sata adapter and see if it shows up there.
It's also quite normal that a drive doesn't spin up after being powered of for a long time. Moving the drive around in your hand so that the disks can turn inside can help to make them going.
Regards, Simon
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
It has a SATA-interface and I could try that but not in the next few days unfortunately. As I said, putting it in the freezer dislodged the disks and I had tried moving/shaking it prior to that but this did not help.
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
Since you have taken the disk apart it will now be useless as within the enclosure there could have been a vacuum or an inert gas.
You will never be able to recover any data on the disk unless you go and pay for a professional data recovery organisation to read the platters.
The price for a replacement 340GByte USB disk is about $25 which would give you a better product than your old disk.
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
_______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Since you have taken the disk apart it will now be useless as within the enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when 3X0GB was
on a 2" drive.
You will never be able to recover any data on the disk unless you go and pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the cover should be put on ASAP. If you don't believe me, just try it our yourself.
The price for a replacement 340GByte USB disk is about $25 which would give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On 09/30/2020 12:03 PM, Simon Matter wrote:
Since you have taken the disk apart it will now be useless as within the enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when 3X0GB was on a 2" drive.
You will never be able to recover any data on the disk unless you go and pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the cover should be put on ASAP. If you don't believe me, just try it our yourself.
The price for a replacement 340GByte USB disk is about $25 which would give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Simon, you are correct in all the above and I replaced the cover as soon as I had ascertained the movements of the head assembly.
On 9/30/20 9:11 AM, H wrote:
On 09/30/2020 12:03 PM, Simon Matter wrote:
Since you have taken the disk apart it will now be useless as within the enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when 3X0GB was on a 2" drive.
You will never be able to recover any data on the disk unless you go and pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the cover should be put on ASAP. If you don't believe me, just try it our yourself.
The price for a replacement 340GByte USB disk is about $25 which would give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Simon, you are correct in all the above and I replaced the cover as soon as I had ascertained the movements of the head assembly.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Opening up disk drives outside of a lab environment is NEVER a good idea if you expect the device to be useful.
I'm thinking this disk problem is tied to your more general usb problem.
There is a guy with a shop in NYC called Louis Rossmann who MAY be able to help with your data recovery. Look him up on youtube or just google the name.
On October 1, 2020 12:03:34 PM EDT, Bruce Ferrell bferrell@baywinds.org wrote:
On 9/30/20 9:11 AM, H wrote:
On 09/30/2020 12:03 PM, Simon Matter wrote:
Since you have taken the disk apart it will now be useless as
within the
enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when
3X0GB was
on a 2" drive.
You will never be able to recover any data on the disk unless you
go and
pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the
cover
should be put on ASAP. If you don't believe me, just try it our
yourself.
The price for a replacement 340GByte USB disk is about $25 which
would
give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal
disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB
connector
that I wanted to check for contents. It did not start up when
connected and
I could not hear the motor spinning. After leaving it in the
freezer
overnight the motor spins but it is not recognized by my
computer. I
disassembled it and could see that the head assembly rests
outside the
disk but when it is powered on, the head first moves to the center of
the
disk, then to the periphery and finally back to the resting position.
This
happens every few seconds and leaving it connected overnight
changed
nothing.
That repeated seeking suggests it's not passing its self test, and
is
constantly retrying. It's probably searching for servo data on
the
disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from
Toshiba,
the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Simon, you are correct in all the above and I replaced the cover as
soon as I had ascertained the movements of the head assembly.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Opening up disk drives outside of a lab environment is NEVER a good idea if you expect the device to be useful.
I'm thinking this disk problem is tied to your more general usb problem.
There is a guy with a shop in NYC called Louis Rossmann who MAY be able to help with your data recovery. Look him up on youtube or just google the name.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
No. I tried this disk on other computers and it has nothing to do with USB. Further, I have other similar disks which do work on this computer.
I don't know whether testdisk would be helpful in this case or not but your options are limited, might give it a try. ________________________________ From: CentOS centos-bounces@centos.org on behalf of H agents@meddatainc.com Sent: Friday, October 2, 2020 6:40 AM To: CentOS mailing list centos@centos.org Subject: [EXTERNAL] Re: [CentOS] External harddisk
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
On October 1, 2020 12:03:34 PM EDT, Bruce Ferrell bferrell@baywinds.org wrote:
On 9/30/20 9:11 AM, H wrote:
Harriscomputer
Leroy Tennison Network Information/Cyber Security Specialist E: leroy@datavoiceint.com P:
[cid:Data-Voice-International-LOGO_aa3d1c6e-5cfb-451f-ba2c-af8059e69609.PNG]
2220 Bush Dr McKinney, Texas 75070 www.datavoiceint.comhttp://www..com
This message has been sent on behalf of a company that is part of the Harris Operating Group of Constellation Software Inc.
If you prefer not to be contacted by Harris Operating Group please notify ushttp://subscribe.harriscomputer.com/.
This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message.
On 09/30/2020 12:03 PM, Simon Matter wrote:
Since you have taken the disk apart it will now be useless as
within the
enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when
3X0GB was
on a 2" drive.
You will never be able to recover any data on the disk unless you
go and
pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the
cover
should be put on ASAP. If you don't believe me, just try it our
yourself.
The price for a replacement 340GByte USB disk is about $25 which
would
give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal
disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB
connector
that I wanted to check for contents. It did not start up when
connected and
I could not hear the motor spinning. After leaving it in the
freezer
overnight the motor spins but it is not recognized by my
computer. I
disassembled it and could see that the head assembly rests
outside the
disk but when it is powered on, the head first moves to the center of
the
disk, then to the periphery and finally back to the resting position.
This
happens every few seconds and leaving it connected overnight
changed
nothing.
That repeated seeking suggests it's not passing its self test, and
is
constantly retrying. It's probably searching for servo data on
the
disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from
Toshiba,
the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Simon, you are correct in all the above and I replaced the cover as
soon as I had ascertained the movements of the head assembly.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Opening up disk drives outside of a lab environment is NEVER a good idea if you expect the device to be useful.
I'm thinking this disk problem is tied to your more general usb problem.
There is a guy with a shop in NYC called Louis Rossmann who MAY be able to help with your data recovery. Look him up on youtube or just google the name.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
No. I tried this disk on other computers and it has nothing to do with USB. Further, I have other similar disks which do work on this computer. _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On 10/02/2020 10:00 AM, Leroy Tennison wrote:
I don't know whether testdisk would be helpful in this case or not but your options are limited, might give it a try. ________________________________ From: CentOS centos-bounces@centos.org on behalf of H agents@meddatainc.com Sent: Friday, October 2, 2020 6:40 AM To: CentOS mailing list centos@centos.org Subject: [EXTERNAL] Re: [CentOS] External harddisk
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
On October 1, 2020 12:03:34 PM EDT, Bruce Ferrell bferrell@baywinds.org wrote:
On 9/30/20 9:11 AM, H wrote:
Harriscomputer
Leroy Tennison Network Information/Cyber Security Specialist E: leroy@datavoiceint.com P:
[cid:Data-Voice-International-LOGO_aa3d1c6e-5cfb-451f-ba2c-af8059e69609.PNG]
2220 Bush Dr McKinney, Texas 75070 www.datavoiceint.comhttp://www..com
This message has been sent on behalf of a company that is part of the Harris Operating Group of Constellation Software Inc.
If you prefer not to be contacted by Harris Operating Group please notify ushttp://subscribe.harriscomputer.com/.
This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message.
On 09/30/2020 12:03 PM, Simon Matter wrote:
Since you have taken the disk apart it will now be useless as
within the
enclosure there could have been a vacuum or an inert gas.
From what I know gas filled disks didn't exist in the times when
3X0GB was
on a 2" drive.
You will never be able to recover any data on the disk unless you
go and
pay for a professional data recovery organisation to read the platters.
No, if he did care that the disks didn't become dirty then the drive should still work quite well to recover what is on it. Of course the
cover
should be put on ASAP. If you don't believe me, just try it our
yourself.
The price for a replacement 340GByte USB disk is about $25 which
would
give you a better product than your old disk.
The OP wanted to recover what is on the disk, not use it as a normal
disk.
Simon
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
> I have an old external harddisk, Toshiba 320 Gb, with a USB
connector
> that > I wanted to check for contents. It did not start up when
connected and
> I > could not hear the motor spinning. After leaving it in the
freezer
> overnight the motor spins but it is not recognized by my
computer. I
> disassembled it and could see that the head assembly rests
outside the
> disk > but when it is powered on, the head first moves to the center of
the
> disk, > then to the periphery and finally back to the resting position.
This
> happens every few seconds and leaving it connected overnight
changed
> nothing. > That repeated seeking suggests it's not passing its self test, and
is
constantly retrying. It's probably searching for servo data on
the
disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from
Toshiba,
the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Simon, you are correct in all the above and I replaced the cover as
soon as I had ascertained the movements of the head assembly.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Opening up disk drives outside of a lab environment is NEVER a good idea if you expect the device to be useful.
I'm thinking this disk problem is tied to your more general usb problem.
There is a guy with a shop in NYC called Louis Rossmann who MAY be able to help with your data recovery. Look him up on youtube or just google the name.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
No. I tried this disk on other computers and it has nothing to do with USB. Further, I have other similar disks which do work on this computer. _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Finally had an opportunity to try testdisk but it did not detect this external harddisk...
On 2020-09-30 10:55, Mark (Netbook) wrote:
Since you have taken the disk apart it will now be useless as within the enclosure there could have been a vacuum or an inert gas.
No, old drives were filled with air usually, and were connected to exterior atmosphere via porous barrier. That is why regular drives are much more likely to fail up in the mountains, say where the is about 1/2 of normal atmospheric pressure. Pressure inside ordinary drive is the same as external pressure, and heads are just spring loaded and are resting on platter surface, and are pushed away from it when platters spin (hence so called "parking track" ). Air works as viscous liquid at these relative speeds, and the law is at least cubic, so at 1/2 atmosphere heads are much closer to platter surface. Therefore, failures are quite likely. Sealed drives are still not wide spread, He (helium) filled would be one type. But sealed drives existed even some 25+ years ago (to be used at Astronomy observatories high in mountains, e.g.). I remember HP drives of that kind that costed $10k apiece back then, and those dollars, not today's dollars.
What you are right about is: the drive upon opening got contaminated with solid dust particles, and will not serve long. But fair chance is, one still will be able to get data off it.
You will never be able to recover any data on the disk unless you go and pay for a professional data recovery organisation to read the platters.
While he may be able to recover data, professional recovery are more likely to succeed. They will be not happy to work with drive that was opened not in a "clean room", and my charge more. Be it I, I definitely will tell them that drive was opened not in clean room, they will know anyway once they have drive.
Valeri
The price for a replacement 340GByte USB disk is about $25 which would give you a better product than your old disk.
Mark
-----Original Message----- From: H Sent: Wednesday, September 30, 2020 4:47 PM To: centos@centos.org Subject: Re: [CentOS] External harddisk
On 09/30/2020 05:40 AM, John Pierce wrote:
On Tue, Sep 29, 2020, 8:33 AM H agents@meddatainc.com wrote:
I have an old external harddisk, Toshiba 320 Gb, with a USB connector that I wanted to check for contents. It did not start up when connected and I could not hear the motor spinning. After leaving it in the freezer overnight the motor spins but it is not recognized by my computer. I disassembled it and could see that the head assembly rests outside the disk but when it is powered on, the head first moves to the center of the disk, then to the periphery and finally back to the resting position. This happens every few seconds and leaving it connected overnight changed nothing.
That repeated seeking suggests it's not passing its self test, and is constantly retrying. It's probably searching for servo data on the disks, and not finding it.
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I see. I have not searched for any low-level disk utility from Toshiba, the manufacturer of the disk. Do you think that might be worthwhile to hopefully fix this?
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