Disk Drill for Mac and Windows – Help Center › Forums › General › Disk Drill doesn’t protect (external) Drives larger than 2TB? And false-negative bad clusters?
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- June 22, 2012 at 11:06 am #4395
I heard somewhere that drives larger than 2TB are treated differently by various operating systems and programs.
when I tried Disk Drill Basic with some external 3TB firewire drives (and various partitions on)
(#1) all of them showed as having a GPT-safety-partition and a huge unallocated partition. Tried further to reformat one of them as MBR – GPT with all sorts of test partitions – still the same result.
(#2) Strangely enough all where marked too as having 129 bad clusters starting at 128.
A surface check could not verify this. BTW a same brand 2TB ran fine in all ways.Now is this (#1) a lack of feature and/or a bug (#2)?
Was hoping strongly for some tool to protect my external data too.DD looks very promising and has good reviews in general so I would appreciate some hint to either clarify this situation or a workaround
Thank you
June 22, 2012 at 2:45 pm #4950Sam, which drive brand are we speaking about here? We ran several tests with 3TB Seagate drives recently and were not able to locate any issues at all.
June 25, 2012 at 11:26 am #4951Hi JR, the big drives that I am using are 3TB Seagate Goflex with firewire adapter socket. (system report calls them GoFlex Desk and FA GoFlex Desk). DD ignores their partitions and shows them only in the way mentioned above. I own several of them, one just newly purchased. Then I swapped one by chance with a 2TB of the same brand by putting it on the same above firewire socket and all the partitions where showing w/o problem, nor where any bad blocks detected.
July 3, 2012 at 6:06 am #4954Hi JR, Do you have any new findings about external 3TB Seagate GoFlex that would show how Diskdrill could protect this drives ? Thank you
July 7, 2012 at 12:42 pm #4957We are still investigating this. We are trying to confirm that disks of that size highly rely on the connector quality, I’ll keep you updated of our progress.
July 13, 2012 at 10:36 pm #4962Hi Sam and JR, I also have a Seagate FreeAgent GoFlex Desk Mac 3TB firewire drive and it shows the same behavior on DD. BTW, if you list the Drives the GoFlex is says that the disck contain DOS partitions (the drive was partitioned as GUID)
July 14, 2012 at 2:18 am #4963Yoger, do you mean that your disk produces the same issue in Disk Drill? Or did you mean yours is working fine?
August 6, 2012 at 1:41 pm #4979I have the same issue. I have a Seagate FreeAgent GoFlex Desk Mac 3TB USB 3 drive and DD reports:
1. GPT-safety-partition (0xEE) (349.31 GB)
and
2. A 2.39GB unallocated partition.This was formatted as HFS+ but shows up as 2.73 GB of DOS partitions.
It is also reported as having 129 bad clusters starting at 128.
August 7, 2012 at 1:28 pm #4982We are still checking the issue with Seagate FreeAgent GoFlex Desk Mac 3TB. Hold on, please.
September 2, 2012 at 12:42 pm #5002Hello,
I have the same problem with:
Western Digital Ext HDD 1021 2.5TB USB2
Western Digital Ext HDD 1021 3.0TB USB2.
Western Digital My Book 1130 3.0TB USB3.1. A GPT-safety-partition (0xEE) (349.31 GB)
2. An unallocated partition (2.39GB)
filesystem: no hfs, no fat32, just raw for both partitions.Each 3 WD-HDD get 128 defect blocks starting at #129.
No problem With Western Digital Ext HDD 1021 2.0TB USB2
The problem seems to be some Hard Disk bigger than 2TB.
Thank you
September 3, 2012 at 11:45 am #5004We’ll send you a build with potential fix via email. Anyone having the same issue with Goflex and other drives, email us.
September 3, 2012 at 5:30 pm #5006I made a mistake
1. A GPT-safety-partition (0xEE) (349.31 GB)
2. An unallocated partition (2.39 TB) <– not 2.39 GBWhole size: 2.73 TB
September 5, 2012 at 8:31 am #5009Have you received the test build?
October 1, 2012 at 1:16 pm #5028We suppose this issue fixed with the latest update: /help/disk-drill-1-8-198/
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