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O.T. MBR Partition 2TB
Windows 10 Pro, 10.0.19041.450, 2004. So I am a little concerned about one
of my portable hard drives I use for backing up. It is making a little soft clicking sound every once an a while. It is a Seagate backup plus 4 TB and I know it is old. I actually rotate my backups through 3 usb drives and for now 4. The new portable is a 5 TB Costco Seagate and I wanted MBR but I could not make 1 of the partitions greater than 2 TB so for now it is GPT. The interesting thing is the backup plus is MBR and has a partition of 2.32 TB, NTFS, 4096 Clusters. I do know Seagate had a driver that would allow this on MBR but the driver should be long gone because I have been through clean installs such as 2004. How could this be possible and can it be done? Bill |
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O.T. MBR Partition 2TB
Bill Bradshaw wrote:
I wanted MBR but I could not make 1 of the partitions greater than 2 TB so for now it is GPT. The interesting thing is the backup plus is MBR and has a partition of 2.32 TB, NTFS, 4096 Clusters. I do know Seagate had a driver that would allow this on MBR but the driver should be long gone because I have been through clean installs such as 2004. How could this be possible and can it be done? AFAIK for a partition larger that 2TB, you need GPT instead of MBR, and it you wanted it to be bootable (you probably don't) the PC has to have UEFI instead of BIOS. I don't know what trickery the Seagate driver might use, but for portability you're probably better off without it ... |
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O.T. MBR Partition 2TB
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O.T. MBR Partition 2TB
On 01/09/2020 18.47, Andy Burns wrote:
Bill Bradshaw wrote: .... AFAIK for a partition larger that 2TB, you need GPT instead of MBR, and it you wanted it to be bootable (you probably don't) the PC has to have UEFI instead of BIOS. Linux can boot fine with GPT and traditional BIOS. I have not tried with Windows, but it can be done if Microsoft wants to. -- Cheers, Carlos. |
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O.T. MBR Partition 2TB
Bill Bradshaw wrote:
Windows 10 Pro, 10.0.19041.450, 2004. So I am a little concerned about one of my portable hard drives I use for backing up. It is making a little soft clicking sound every once an a while. It is a Seagate backup plus 4 TB and I know it is old. I actually rotate my backups through 3 usb drives and for now 4. The new portable is a 5 TB Costco Seagate and I wanted MBR but I could not make 1 of the partitions greater than 2 TB so for now it is GPT. The interesting thing is the backup plus is MBR and has a partition of 2.32 TB, NTFS, 4096 Clusters. I do know Seagate had a driver that would allow this on MBR but the driver should be long gone because I have been through clean installs such as 2004. How could this be possible and can it be done? Bill This isn't the only utility, but you might try looking for an anomaly here. The WinXP version of fsutil does not list "Bytes Per Physical Sector", the Windows 10 one does. C:\fsutil fsinfo ntfsinfo h: NTFS Volume Serial Number : (8 bytes hex, from MBR) NTFS Version : 3.1 LFS Version : 2.0 Number Sectors : 0x0000000007f047ff Total Clusters : 0x0000000000fe08ff Free Clusters : 0x0000000000ab0461 Total Reserved : 0x0000000000000d89 Bytes Per Sector : 512 === \___ This is a 512n drive Bytes Per Physical Sector : 512 === / Bytes Per Cluster : 4096 Bytes Per FileRecord Segment : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length : 0x000000000e840000 Mft Start Lcn : 0x00000000000c0000 Mft2 Start Lcn : 0x0000000000000002 Mft Zone Start : 0x00000000002c2fa0 Mft Zone End : 0x00000000002c2fc0 Max Device Trim Extent Count : 0 Max Device Trim Byte Count : 0x0 Max Volume Trim Extent Count : 62 Max Volume Trim Byte Count : 0x40000000 Resource Manager Identifier : (a GUID) virtual physical ------------ ------------ 512n 512 external, 512 internal (legacy from long ago) 512e 512 external, 4096 internal (most modern drives use 4K internal) (all current OSes support 512 external) 4096n 4096 external, 4096 internal (Windows 10 supports 4096 external, but not on the initial 10240 release, it came later) At least one RAID controller card (Areca) "lied" about the sector size so that it could support 16TB RAID volumes (non-GPT) on an OS that only understood 2TB devices. This trick has been around the block, but you'd have to look up the details about how the subsystem gets away with it. ******* Acronis Capacity Manager creates multiple 2TB "fake" disk drives, to make all the space accessible on Windows XP. It does not rely on any sector-size tricks. It's also a nuisance to work with (hand-crafted loopback mounts in Linux...). Paul |
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O.T. MBR Partition 2TB
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O.T. MBR Partition 2TB
On 02/09/2020 12.00, Philip Herlihy wrote:
Worth adding that drives connected via USB.3 make their SMART data available to a suitable utility which can save a lot of grief by giving early notice of disk deterioration. I prefer HD Sentinel (paid, but worth it). Acronis Drive Monitor is free but dating rapidly. HDTune and DiskCheckup are both free for home use, and give basic SMART interpretation. I have not tried on Windows, but there is smartctl. Free and complete. Should work on USB 2, too. -- Cheers, Carlos. |
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O.T. MBR Partition 2TB
Paul wrote:
Bill Bradshaw wrote: Windows 10 Pro, 10.0.19041.450, 2004. So I am a little concerned about one of my portable hard drives I use for backing up. It is making a little soft clicking sound every once an a while. It is a Seagate backup plus 4 TB and I know it is old. I actually rotate my backups through 3 usb drives and for now 4. The new portable is a 5 TB Costco Seagate and I wanted MBR but I could not make 1 of the partitions greater than 2 TB so for now it is GPT. The interesting thing is the backup plus is MBR and has a partition of 2.32 TB, NTFS, 4096 Clusters. I do know Seagate had a driver that would allow this on MBR but the driver should be long gone because I have been through clean installs such as 2004. How could this be possible and can it be done? Bill This isn't the only utility, but you might try looking for an anomaly here. The WinXP version of fsutil does not list "Bytes Per Physical Sector", the Windows 10 one does. C:\fsutil fsinfo ntfsinfo h: NTFS Volume Serial Number : (8 bytes hex, from MBR) NTFS Version : 3.1 LFS Version : 2.0 Number Sectors : 0x0000000007f047ff Total Clusters : 0x0000000000fe08ff Free Clusters : 0x0000000000ab0461 Total Reserved : 0x0000000000000d89 Bytes Per Sector : 512 === \___ This is a 512n drive Bytes Per Physical Sector : 512 === / Bytes Per Cluster : 4096 Bytes Per FileRecord Segment : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length : 0x000000000e840000 Mft Start Lcn : 0x00000000000c0000 Mft2 Start Lcn : 0x0000000000000002 Mft Zone Start : 0x00000000002c2fa0 Mft Zone End : 0x00000000002c2fc0 Max Device Trim Extent Count : 0 Max Device Trim Byte Count : 0x0 Max Volume Trim Extent Count : 62 Max Volume Trim Byte Count : 0x40000000 Resource Manager Identifier : (a GUID) virtual physical ------------ ------------ 512n 512 external, 512 internal (legacy from long ago) 512e 512 external, 4096 internal (most modern drives use 4K internal) (all current OSes support 512 external) 4096n 4096 external, 4096 internal (Windows 10 supports 4096 external, but not on the initial 10240 release, it came later) At least one RAID controller card (Areca) "lied" about the sector size so that it could support 16TB RAID volumes (non-GPT) on an OS that only understood 2TB devices. This trick has been around the block, but you'd have to look up the details about how the subsystem gets away with it. ******* Acronis Capacity Manager creates multiple 2TB "fake" disk drives, to make all the space accessible on Windows XP. It does not rely on any sector-size tricks. It's also a nuisance to work with (hand-crafted loopback mounts in Linux...). Paul When I purchased the Seagate backup plus I would have been running WinXP Pro. So the utility changed the sector size. C:\Windows\system32fsutil fsinfo ntfsinfo g: NTFS Volume Serial Number : 0x8dda9126604bdabb NTFS Version : 3.1 LFS Version : 1.1 Total Sectors : 628,045,046 ( 2.3 TB) Total Clusters : 628,045,046 ( 2.3 TB) Free Clusters : 41,769,341 (159.3 GB) Total Reserved Clusters : 152,300 (594.9 MB) Reserved For Storage Reserve : 0 ( 0.0 KB) Bytes Per Sector : 4096 Bytes Per Physical Sector : 4096 Bytes Per Cluster : 4096 Bytes Per FileRecord Segment : 4096 Clusters Per FileRecord Segment : 1 Mft Valid Data Length : 2.64 GB Mft Start Lcn : 0x0000000024381c60 Mft2 Start Lcn : 0x00000000002a812f Mft Zone Start : 0x00000000066b27a0 Mft Zone End : 0x00000000066bace0 MFT Zone Size : 133.25 MB Max Device Trim Extent Count : 0 Max Device Trim Byte Count : 0 Max Volume Trim Extent Count : 62 Max Volume Trim Byte Count : 0x40000000 Resource Manager Identifier : ABBA6891-BAA1-11E6-A1C4-002269E20D8E This is an older computer so it uses BIOS and not UEFI. I will have to check Seagate today to see if there is still something that would change the sector size. Bill |
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O.T. MBR Partition 2TB
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