DOS ain't dead

MS Scandisk (Announce)

posted by ecm  , Düsseldorf, Germany, 11.01.2025, 14:54

> On a test machine with up to 4 GB big test files it had a few problems
> "One or more files on drive C are stored incorrectly and are overwriting
> each others data. Some of these files probably contain invalid data. To
> find out which files are involved, choose More Info.
>
> 1 invalid directory entry was corrected.
> 1 crosslink was corrected.
> 7 lost clusters were saved as files.
>
> But I am not sure if this really has to say something; if I remember right
> I also tested an older version of edrdos which was able to create files
> bigger than 4 GB as it also supported a special format, i forgot the name,
> maybe FAT32+ (or something like this).

Yes, FAT32+ or more generally FAT+ is the 6-bit file size extension that allows to store files of up to 256 GiB - 1 Byte. The specification for this is available at https://web.archive.org/web/20150219123449/http://www.fdos.org/kernel/fatplus.txt and it lists some compatibility concerns, like file system checks not supporting FAT+.

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Complete thread:

• MS Scandisk - fritz.mueller, 10.01.2025, 14:44 (Announce)
  • MS Scandisk - bencollver, 10.01.2025, 15:01
  • MS Scandisk - mceric, 11.01.2025, 00:04
    • MS Scandisk - fritz.mueller, 11.01.2025, 13:43
      • MS Scandisk - ecm, 11.01.2025, 14:54