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usbClik_J820_128G

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Mjolnir Page Icon Posted 2019-12-05 8:52 PM
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I've read that Fat32 usb flash drives have at least an 8 terabyte 'practical' limit with a file size limit of 4GB with 16T being the theoretical upper limit. Not sure how correct that is but I've attached pics of my J820 addressing my 128G Sandisk Cruzer. It'd be fun to see how far we can push these old devices.
The first pic is Windows Explorer showing 'properties' of the drive on the J820 while the second is from my Win10 laptop.

convert 20191204_1648_usbclik.PNG -resize 720x540 -define jpeg:extent=100kb 20191204_1648_usbclik.jpg
convert IMG_20191204_162711.jpg -resize 720x540 -define jpeg:extent=100kb IMG_20191204_162711.jpg



(IMG_20191204_162711.jpg)



(20191204_1648_usbclik.jpg)



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Attachments 20191204_1648_usbclik.jpg (92KB - 0 downloads)
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C:Amie Page Icon Posted 2019-12-05 10:54 PM
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This is correct for the bytes available to the VFAT, however the Microsoft driver itself is limited in its expectations over partition capacity. This also includes the chkdsk module which can (and eventually will) mean that it chews your larger partition UFD before spitting it out again as binary flak.

That is why when I wrote https://www.hpcfactor.com/support/cesd/h/0044.asp I was careful to refer to it as Native Partition Size.
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Mjolnir Page Icon Posted 2019-12-06 4:43 PM
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Nice write-up. I understand that as owner of this web site you council people on a 'best practice' basis especially when, as you stated, Windows made a concerted effort to steer people away from Fat32 to ntfs.
That being said, and meaning no disrespect, I consider any potential scrambling of data essentially a Windows problem since, again as you wrote, Linux has no problem reading these disks. I also have of course multiple backups of any important archival data (family trees, etc.) spread across multiple external devices and internally on several different operating systems.
At the end of the day this is a flash drive that costs less than a pepperoni pizza and a six pack of beer. In a few years these things (128Gb) will be at $5 and hopefully we'll be talking of Terabyte(s) drives as 'cheap.'
The picture is of me mounting the drive from WSL - Windows Sub-System for Linux.

Edited by Mjolnir 2019-12-06 4:46 PM




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C:Amie Page Icon Posted 2019-12-07 10:29 AM
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Mjolnir, I'm not cautioning because I don't think you should be doing it. I'm cautioning any one who comes and reads this thread, states in a huff that the advice officially offered here is a load of nonsense and then goes off and loses their data.

You posted your case in point screenshot on Windows CE, not Linux and I was referring to just that.

If you are using H/PC Linix/Unix, go for it. The CESD advice "Applies To:

Windows CE 1.0, 1.01
Windows CE 2.0
Windows CE 2.10, 2.11, 2.12
Windows CE 3.0
Windows CE .net 4.0, 4.1, 4.2
Windows CE 5.0
Windows Embedded CE 6.0
Handheld PC Professional
HPC2000"

Sooner or later a soft reset or a power loss will trip the CE FAT32 volume checker and it will very likely scramble your bits - it has happened to me multiple times.

And yes, before someone wants to nit pick. Large FAT32 volumes work just fine on Windows XP, Vista, 7, 8, 8.1, 10. This is a Windows CE oriented conversation.
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