SSD showing only 127GB partition out of 476GB

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ameena4u

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Jan 22, 2018
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510
Hi,

This was my primary SSD in my laptop and last month the laptop would not boot up and instead showed the blue screen. After researching found that the MBR could be corrupt but tried everything and could not recover it. So I got an enclosure and attached the ssd to my desktop and I could see one 127GB partition and a 300+ GB unallocated partition. I used EaseUS partition manager and merged the partitions but I was left with one 127GB partition. Now I cannot find/recover the other space. What must have gone wrong? At this point I don't care about recovering the data. Just need to get full space on my ssd back instead of just 127GB.

Thanks in advance
 
Solution
RealBeast
Where did you buy this from? I am suspicious that after a secure erase it shows 128GB.

Did it come in the laptop or did you buy just the drive?

I've asked other mods to come over and give you their ideas.

edit: one additional though (a bit of work), I would consider looking at the drive from a Live Linus stick (a Linux OS that is run off a USB stick that you can easily make using THIS free tool, usually I use Mint32 or Ubuntu). If you boot from the stick, then you mount the drive and see what the Linux OS thinks it is.
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RealBeast

RealBeast

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Sep 13, 2010
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If you don't care about the data on the drive and want to insure that it is in perfect condition before reinstalling Windows, secure erase it. You can do that by either attaching it to another machine and using the SSD toolbox for the particular brand *or* do a clean reinstallation and as a first step select the command prompt window and enter the follow commands:

diskpart
list disk
select disk n (n should be the SSD from the above list -- be sure of what you select!)
clean all
exit

The clean all command writes zeros to every sector and the drive will be in a new condition, then you can initialize and format it. Although I don't recommend doing it all the time, one clean all does not affect drive life with one complete drive write.
 
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ameena4u

Prominent
Jan 22, 2018
5
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510


Thanks for the reply. I followed the instructions and opted to used diskpart but after the clean, it still shows as 128GB unallocated.

I also dowloaded SanDisk SSD Dashboard and 'Santitized' the ssd and within the dashboard it showed 476GB but after I closed the program and started in again, it shows 128GB. I opened this in EaseUS Partition manager and that shows only one unallocated partition of 128GB. Tried the 'Secure Erase' option within the dashboard and same results.
 
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ameena4u

Prominent
Jan 22, 2018
5
0
510


Here is a screen shot from Ease US: https://ibb.co/jKvpbw

and the SSD model is SanDisk X300 and here is extra info from the dashboard:
Model String: SanDisk SD7SN6S-512G-1006
Maximum LBA: 1000215216
World Wide Name: 5001B44E9A6D5C4E
Firmware Ver: X3511006 (up to date)

I have tried so many solutions and nothing seems to work. I don't know if there is such thing as metadata about the disk partition and maybe that's missing. All I did was merge the partitions. Some of the solutions seem to manually edit some hex info but I have no idea what that means. So far I have used Minitool Partition Wizard, Ease US, AOMEI
 
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RealBeast

RealBeast

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Sep 13, 2010
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104,790
There is still an unallocated 128GB MBR partition on there -- the SSD has not been secured erased.

Did you use the SanDIsk Toolbox secure erase already?

Skip all the halfway tools, you need a secure erase or a clean all with diskpart for this drive.
 
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ameena4u

Prominent
Jan 22, 2018
5
0
510


Yes I'm not using any of those tools. I just use them to see if any partitions show up. As I mentioned earlier, I used Sandisk Dashboard to secure erase and also clean all with diskpart. It still shows the that 128GB unallocated partition as seen in the screenshot attached earlier.

Another thing I noticed is that the ssd shows 476 GB unallocated space in the dashboard BUT once I run secure erase, it updates to 128GB. I think the first time it just assumes the space as it's going by the model #. Just something I noticed.
 
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RealBeast

RealBeast

Titan
Moderator
Sep 13, 2010
17,109
474
104,790
Where did you buy this from? I am suspicious that after a secure erase it shows 128GB.

Did it come in the laptop or did you buy just the drive?

I've asked other mods to come over and give you their ideas.

edit: one additional though (a bit of work), I would consider looking at the drive from a Live Linus stick (a Linux OS that is run off a USB stick that you can easily make using THIS free tool, usually I use Mint32 or Ubuntu). If you boot from the stick, then you mount the drive and see what the Linux OS thinks it is.
 
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Solution
A

ameena4u

Prominent
Jan 22, 2018
5
0
510


This is stock SSD that came with my laptop and it had 400+ GB data which I lost but I had backed up most important data a week earlier....but still lost a lot of important data which I won't get back and I don't care :). I will try that suggesting and post the results. Thank you very much for helping with this.
 
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