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2 Posts

11-28-2020

Poland

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T450: Windows shows 512 Gb SSD as 256 Gb

2020-11-28, 22:27 PM

I have a second-hand T450 that came with Windows 10 Pro preinstalled (fresh install). HDD is SanDisk SSD 512 Gb. The disk P/N as shown by both the Lenovo utility and Device Manager corresponds to the 512 Gb model. The Lenovo utility and diskpart show the disk as having 512 Gb capacity (well, actually 476 Gb  formatted space).

However, Disk Management shows the disk is only 256 Gb in size, and diskpart shows there are 4 partitions (including C: of 237 Gb and 3 more system/recovery partitions - 1 Gb of total size) and no more free space.

chkdsk finds no errors. No suspicious events both in the Application and System logs. All drivers are up to date (checked with both Lenovo Vantage and ServiceBridge).

Where is half of the disk capacity? I suspect that it can be somehow related to a well-hidden recovery partition but I can't find it. Or maybe the recovery partition shown as 100 Gb is in fact corrupted and takes much more space...

 

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          476 GB      0 B        *

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list partition

  Partition ###  Type              Size     Offset
  -------------  ----------------  -------  -------
  Partition 1    System             260 MB  1024 KB
  Partition 2    Reserved            16 MB   261 MB
  Partition 3    Primary            237 GB   277 MB
  Partition 4    Recovery          1000 MB   237 GB

DISKPART> list volume

  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 0     C   Windows      NTFS   Partition    237 GB  Healthy    Boot
  Volume 1         SYSTEM       FAT32  Partition    260 MB  Healthy    System
  Volume 2         WinRE_DRV    NTFS   Partition   1000 MB  Healthy    Hidden

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2 Posts

11-28-2020

Poland

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Re:T450: Windows shows 512 Gb SSD as 256 Gb

2020-11-29, 8:30 AM

Hi Jens. Thanks a lot for the tip. The option of extending the partition was greyed out and inaccessible. However, I checked the disk with a 3d party partition manager (AOMEI Partition Assistant). There was unpartitioned free space beyond the recovery partition supposed to be at the very end of the disk. Seems the disk image from a smaller disk was really cloned to that bigger disk, so Windows didn't suspect there is something else.

I repartitioned the disk, now everything looks like it should be.

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25 Posts

09-25-2020

Germany

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Re:T450: Windows shows 512 Gb SSD as 256 Gb

2020-11-28, 23:35 PM

Hi, did you try, in Windows Disk Manager, to right-click on your user volume and choose "Extend volume"? Usually this happens when you swap your SSD to a larger one and copy the old (small) image to your new (larger) SSD. Good luck!

Best regards, Jens

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2 Posts

11-28-2020

Poland

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Re:T450: Windows shows 512 Gb SSD as 256 Gb

2020-11-29, 8:30 AM

Hi Jens. Thanks a lot for the tip. The option of extending the partition was greyed out and inaccessible. However, I checked the disk with a 3d party partition manager (AOMEI Partition Assistant). There was unpartitioned free space beyond the recovery partition supposed to be at the very end of the disk. Seems the disk image from a smaller disk was really cloned to that bigger disk, so Windows didn't suspect there is something else.

I repartitioned the disk, now everything looks like it should be.

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