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charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Am Mon, Feb 17, 2025 at 04:38:22PM +0000 schrieb Stroller: >=20 >=20 > > On 15 Feb 2025, at 07:41, Philip Webb wrote: > > ... > > Has anyone else encountered this ? Does anyone have suggestions ? >=20 > Create multiple large files on your desktop PC. You could use movie files= if you have a small number of large enough files handy. I would prefer 5 f= iles of about 45GB, and I would create them using `for i in {1..5} ; do dd = if=3D/dev/random of=3Drandom$i ; done` and a file size specifier to dd. >=20 > md5sum the files, copy them to the drive and md5sum the copies. Do the md= 5sums match up? Methinks it should be enough to create one file of, say, 1 GB and copy that= =20 over with a new name each time until the drive is full. All files should=20 return the same md5. This will also save you from writing dozens of GB to= =20 your main storage because you need its md5 beforehand (unless you have a=20 big enough ramdisk). NUM=3D1 while cp -v /path/to/source /path/to/stick/file$NUM; do NUM=3D$((NUM + 1)) When the drive is full, cp fails and the loop should end. Or use a flash test program as was mentioned in a recent other post. Either= =20 way, going from the discussion so far, I would not trust those sticks until= =20 fully written to and read back. There are basically three tiers of Flash=20 memory quality: the best goes into SSDs, the second-best goes into Memory= =20 cards or emmc (IIRC) and the =E2=80=9Cgarbage=E2=80=9D goes into USB sticks. The computer store might be OK, but they have no control over what they get= =20 sent. There was a recrent scandal here in Germany about allegedly new=20 Seagate HDDs being actually used drives from Chia farms whose SMART values= =20 have been reset. This only came to light because Seagate uses another set o= f=20 internal diagnostic data that was not reset and showed several thousand=20 hours of power-on-time. Several big retailers were affected because the=20 problem was with the distributor. --=20 Gr=C3=BC=C3=9Fe | Greetings | Salut | Qapla=E2=80=99 Please do not share anything from, with or about me on any social network. There are those and those. 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