ValiDrive map:
ValiDrive only reports the contiguous validated
sectors from the 'front' of the drive when filling
in the 'validated drive size'.
ValiDrive also reports the 'highest valid region'.
Here's a sample of a drive that might have
storage randomly available in spite of failing
to have full storage:
ValiDrive says 31.4GB is valid, but there are
green blocks further on, so I might be able to
write more than 31.4GB to the drive, as you
have written more than 1GB on yours.
That may be what's happening on your drive,
though if the SSD chip controller is gaming the
system, there may be no way to predict if any
file will land on a 'real' block and ever come
back.
SSDs map their sectors on 'pages', so any part
of any block or any part of any file could be
anywhere on the chips.
The lowest invalid sector on your drive is after
1 GB, but your drive might have 32 GB spread
all over a 1 TB map, just to game the system.
You may not 'lose' data until after trying to
write 32 GB - I'm just guessing.
So looking at a ValiDrive map may help us
interpret what's happening on any specific
drive.
Or not - ValiDrive only tests 576 'regions'
( declining to reveal the exact size and location
for any tested drive so that vendors can't
'game' ValiDrive ).
It's possible that your drive has usable
storage outside the 576 regions that
ValiDrive tests, so a more-thorough test
might help reveal and explain.
- - - - -
File Size, Size on Disk, Compressed, and
Sparse Attribute:
Or, your 1.44GB of data may actually 'fit' in
1GB of storage space.
If you look at the properties for each file,
compare the Size versus the Size on disk or
Compressed:
My examples aren't extreme, but any file
could be more 'sparse', check yours.
Or look for attributes indicating the file is
Sparse, the free FAR File And Archive Manager
will show and allow toggling the Sparse
attribute and function, see
https://www.farmanager.com/download.php?l=en
Though merely copying the file with an
unaware program should eliminate the Sparse
attribute and return a Sparse file to full size on
disk
- - - - -
Broad spectrum examination:
Not-free SpinRite 6.1 may be able to check the
drive if the BIOS and USB ports allow.
This might a good command line to use:
SPINRITE NORAMTEST NOREWRITE DYNASTAT 0 LEVEL 5
SpinRite is NOT designed to find fakes drives,
but can be pressed into service to show us
something.
I suggest
LEVEL 5 because I have a fake
drive that passes
LEVEL 3 and
LEVEL 4 .
It would be interesting to know if your fake
drive passes or fails under SpinRite 6.1 scrutiny.
ValiDrive exists because SpinRite was designed
to recover data and maintain reputable drives,
not discover vendors who lie.
- - - - -
Free h2testw checks
partitions, and can do a
full write and compare test, see:
https://h2testw.org/
It's destructive, best applied to a freshly
re-partitioned and re-formatted empty drive,
and it takes a lot more time than ValiDrive.
- - - - -
Free HDDScan checks
drives, and can also do
a full write and compare test, also destructive,
and also takes a long time, see:
https://hddscan.com/
- - - - -
Check out any responses to a web search and
let us know if you discover any additional tools,
see:
https://www.google.com/search?q=How+can+I+test+a+USB+drive+to+confirm+its+capacity?
- - - - -
Note, we're just trying to understand the drive,
not use it.
Lonovo makes no drives, ( other than CD ) see:
https://www.lenovo.com/us/en/d/acce...eDatas=773:Memory%20%26%20Storage;1008:Lenovo
This is a great insight for everyone to check
the OEM original equipment manufacturer
for the same model we see offered for sale
elsewhere.
If the vendor doesn't even sell such a thing,
that's a clue that the thing being offered is
fake.
If the vendor does sell such a thing, then
buy with return privileges, because the
cheapie deal is probably fake.
Your non-Lonovo drive seems to be a
'smarter' fake drive than the prior fake drives
we've seen, so we'd love to know more
about it's behavior.
It is not trustworthy, so never never never put
anything on it that is the only copy of precious
data.
Let us know what you find.
Good luck.
