Not fully testing 8TB

[bnzf]

I tested a 8TB SSD. f3write finished, as quoted below, before writing the entire SSD.
...
Creating file 7018.h2w ... OK!
Creating file 7019.h2w ... OK!
Creating file 7020.h2w ... OK!
Free space: 372.62 GB
Average writing speed: 476.39 MB/s

f3read:
...
Validating file 7019.h2w ... 2097152/ 0/ 0/ 0
Validating file 7020.h2w ... 1142016/ 0/ 0/ 0

Data OK: 6.86 TB (14721051904 sectors)
Data LOST: 0.00 Byte (0 sectors)
Corrupted: 0.00 Byte (0 sectors)
Slightly changed: 0.00 Byte (0 sectors)
Overwritten: 0.00 Byte (0 sectors)
Average reading speed: 1.03 GB/s

So apart from the untested part everything seems to be OK. Perhaps some data structure is too small for the 8TB

[JochenHiller]

I have same issue when testing a Samsung PortableSSD T9 4 GB in ExFat format on macOS 15.3.1:

f3write reports only 1.64 TB to be tested:

df -h /Volumes/MacHD13
Filesystem      Size  Used Avail Capacity Use% Mounted on
/dev/disk6s2    3.7T   22M  3.7T     100%   1% /Volumes/MacHD13


f3write /Volumes/MacHD13/TEST
F3 write 8.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 1.64 TB
Creating file 1.h2w ... OK!         
...              

When SSD is formatted in APFS format, full space will be tested:

f3write /Volumes/MacHD13/TEST
F3 write 8.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 3.64 TB
Creating file 1.h2w ... OK!    
...