February 9, 201115 yr I have a replacement refurbished drive that has been returned by Seagate and i wiould like to preclear it using one of my windows 7 laptops. I can fire up unRAID on the laptop with no issues but I am unable to pre-clear the drive. I got a message saying drive cannot be precleared. The drive is connected through a usb Docking hub, will this cause a problem? Can anyone advise the command to list all drives for me please. Thank you
February 9, 201115 yr Download the newest preclear_disk.sh then type preclear_disk.sh -l What was the reason given when it said the drive cannot be precleared? Be very careful to NOT clear your laptop's hard disk... I hate to see grown men cry. I don't think the usb dock will do anything other than cause the process to be VERY slow. Joe L.
February 9, 201115 yr Author Download the newest preclear_disk.sh then type preclear_disk.sh -l What was the reason given when it said the drive cannot be precleared? Be very careful to NOT clear your laptop's hard disk... I hate to see grown men cry. I don't think the usb dock will do anything other than cause the process to be VERY slow. Joe L. I have downloaded the latest version of preclear at 09/02/2011 14:50 GMT. I run preclear_disk.sh -l and the hdd i wish to preclear is /dev/sdd/ = usb-ST350032_0AS_51CFFFFFFFFF-0:0. I typed preclear_disk.sh /disk/dev/sdd and got the following message Error: preclear unable to continue smartctl is unable to run on /dev/sdd with the -d ata option smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linix-gnu] (local build) copyright...blah blah... Smartctl: Device Read Identity failed: exiting. To continue, add one opr more '-T permissive' options.$ I'm having another read of the preclear post now to see if I can spot any solutions
February 9, 201115 yr Download the newest preclear_disk.sh then type preclear_disk.sh -l What was the reason given when it said the drive cannot be precleared? Be very careful to NOT clear your laptop's hard disk... I hate to see grown men cry. I don't think the usb dock will do anything other than cause the process to be VERY slow. Joe L. I have downloaded the latest version of preclear at 09/02/2011 14:50 GMT. I run preclear_disk.sh -l and the hdd i wish to preclear is /dev/sdd/ = usb-ST350032_0AS_51CFFFFFFFFF-0:0. I typed preclear_disk.sh /disk/dev/sdd and got the following message Error: preclear unable to continue smartctl is unable to run on /dev/sdd with the -d ata option smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linix-gnu] (local build) copyright...blah blah... Smartctl: Device Read Identity failed: exiting. To continue, add one opr more '-T permissive' options.$ I'm having another read of the preclear post now to see if I can spot any solutions You could try using the "-D" option. Apparently, your usb device will not allow smartctl to read the disk's identity as an "ata" drive. Another possibility is to try (noting the quote marks) preclear_disk.sh -s -d "ata -T permissive" /dev/sdd Unfortunately, many USB enclosure chipsets do not support the full set of SMART commands. Joe L.
February 9, 201115 yr Author Download the newest preclear_disk.sh then type preclear_disk.sh -l What was the reason given when it said the drive cannot be precleared? Be very careful to NOT clear your laptop's hard disk... I hate to see grown men cry. I don't think the usb dock will do anything other than cause the process to be VERY slow. Joe L. I have downloaded the latest version of preclear at 09/02/2011 14:50 GMT. I run preclear_disk.sh -l and the hdd i wish to preclear is /dev/sdd/ = usb-ST350032_0AS_51CFFFFFFFFF-0:0. I typed preclear_disk.sh /disk/dev/sdd and got the following message Error: preclear unable to continue smartctl is unable to run on /dev/sdd with the -d ata option smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linix-gnu] (local build) copyright...blah blah... Smartctl: Device Read Identity failed: exiting. To continue, add one opr more '-T permissive' options.$ I'm having another read of the preclear post now to see if I can spot any solutions You could try using the "-D" option. Apparently, your usb device will not allow smartctl to read the disk's identity as an "ata" drive. Another possibility is to try (noting the quote marks) preclear_disk.sh -s -d "ata -T permissive" /dev/sdd Unfortunately, many USB enclosure chipsets do not support the full set of SMART commands. Joe L. Thanks Joe L. Option -D worked and i'm reading at 35MB/s I am going to do 3 passes of this hdd as it is a refurbished hdd and the last two I have been sent has failed after a few months use.
February 9, 201115 yr Download the newest preclear_disk.sh then type preclear_disk.sh -l What was the reason given when it said the drive cannot be precleared? Be very careful to NOT clear your laptop's hard disk... I hate to see grown men cry. I don't think the usb dock will do anything other than cause the process to be VERY slow. Joe L. I have downloaded the latest version of preclear at 09/02/2011 14:50 GMT. I run preclear_disk.sh -l and the hdd i wish to preclear is /dev/sdd/ = usb-ST350032_0AS_51CFFFFFFFFF-0:0. I typed preclear_disk.sh /disk/dev/sdd and got the following message Error: preclear unable to continue smartctl is unable to run on /dev/sdd with the -d ata option smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linix-gnu] (local build) copyright...blah blah... Smartctl: Device Read Identity failed: exiting. To continue, add one opr more '-T permissive' options.$ I'm having another read of the preclear post now to see if I can spot any solutions You could try using the "-D" option. Apparently, your usb device will not allow smartctl to read the disk's identity as an "ata" drive. Another possibility is to try (noting the quote marks) preclear_disk.sh -s -d "ata -T permissive" /dev/sdd Unfortunately, many USB enclosure chipsets do not support the full set of SMART commands. Joe L. Thanks Joe L. Option -D worked and i'm reading at 35MB/s I am going to do 3 passes of this hdd as it is a refurbished hdd and the last two I have been sent has failed after a few months use. Great news... Glad the "-D" option worked for you. (It is new as of 4 days ago, added to help somebody else with a non-standard disk controller. You benefited from their experience and feedback.) 35MB/s is not too bad. It is probably close to the limit for a USB connection. I think that is a 500Gig drive. If so, three passes should take about 50 or 60 hours. Joe L.
February 9, 201115 yr A lot of USB bridges want -d sat. The latest version of smartctl has more intelligence in this regard.
February 12, 201115 yr Author Could someone have a quick glance at the preclear results for my refurbished drive please, they look okay to me. I've consolidated preclear_finish_sdd_2011-02-10, preclear_rpt_sdd_2011-02-10 and preclear_start_sdd_2011-02-10 into one report Thank you Preclear_rma_seagate.txt
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