DOS ain't dead - --- DEATH ---

--- DEATH --- (Developers)

posted by sol, 23.12.2007, 23:29

> Support for external file systems is important, but DOS having a native
> format for files > 4 GB, based on FAT32 and stable for other OSes is not
> proven yet to be impossible. In such a concept one file > 4 GB will be
> seen as multiple files in Windows/Linux, all < 4 GB and all of course
> "perfectly valid".

The problem here is that you're calling UFS/FFS/etc "external file systems" while not referring to FAT32+ or a new FAT as such. Since old DOSes, other OSes & old tools will not recognize the file system, or will corrupt it, it's pretty much a new or external file system.

So --- we're already adding support for a new filesystem. Why not do it right?

Why base it off FAT, which is bad by design?

It's not efficient. It gets fragmented horribly. LFN was hacked in. If we're still using 28 bits of the FAT, iirc we're restricting ourselves to 2 TB for partition size. I've already reached 1 TB in my PC. In another year, we'll be at 2 TB and the file system will have reached its limit. It doesn't handle corruption well at all. Etc.

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Complete thread:

GetFileSizeEx / Read&Write performance / Wiping - DOS386, 21.12.2007, 03:40 (Developers)
- GetFileSizeEx / Read&Write performance / Wiping - Steve, 21.12.2007, 05:38
- The Death Of FAT32+ - Japheth, 21.12.2007, 07:24
  - --- DEATH --- - DOS386, 21.12.2007, 22:13
    - --- DEATH --- - sol, 21.12.2007, 22:30
      - --- DEATH --- - DOS386, 21.12.2007, 22:46
        --- DEATH --- - Steve, 21.12.2007, 23:22
    - Rest in Peace, Fat32+! No Resurrection possible! - Japheth, 21.12.2007, 23:12
      - -- DEATH -- (anyone has a solution for >4GiB files in DOS ?) - DOS386, 21.12.2007, 23:46
        First get all facts! - Japheth, 22.12.2007, 00:15
        --- DEATH --- - DOS386, 22.12.2007, 00:24
        --- DEATH --- - sol, 22.12.2007, 05:17
        --- DEATH --- - Japheth, 22.12.2007, 09:45
        --- DEATH --- - Steve, 22.12.2007, 10:08
        DOS API extension for files > 4 GB - Japheth, 22.12.2007, 10:28
        --- DEATH --- - sol, 23.12.2007, 23:29
        --- DEATH --- - Matjaz, 24.12.2007, 10:03
        DOS File System efforts - Japheth, 24.12.2007, 17:06
        DOS File System efforts - Rugxulo, 24.12.2007, 19:53
        DOS File System efforts - sol, 25.12.2007, 02:17
        DOS File System efforts - Japheth, 25.12.2007, 09:10
        DOS File System efforts - Rugxulo, 26.12.2007, 21:34
        HPFS for DOS - Rugxulo, 09.09.2008, 22:48
        --- DEATH --- - Japheth, 22.12.2007, 08:57
  - 1 a later, DOS fs enh committee, please report what you got - DOS386, 29.12.2008, 02:41
    - Just noise? - Japheth, 29.12.2008, 08:07
      - NOISE-FS outperforms them all !!! - DOS386, 30.12.2008, 23:06
        NOISE-FS outperforms them all !!! - Japheth, 31.12.2008, 11:46
        NOISE-FS outperforms them all !!! - sol, 02.01.2009, 01:59
        NOISE-FS outperforms them all !!! - Rugxulo, 02.01.2009, 04:25
    - better DOS file system? - Rugxulo, 29.12.2008, 23:16
      - better DOS file system? - ecm, 30.12.2008, 21:48
    - 1 a later, DOS fs enh committee, please report what you got - Steve, 02.01.2009, 07:01
- GetFileSizeEx / Read&Write performance / Wiping - Laaca, 11.01.2009, 14:14
  - exFAT - ecm, 11.01.2009, 17:30
  - GetFileSizeEx / Read&Write performance / Wiping - Rugxulo, 12.01.2009, 19:25
    - GetFileSizeEx / Read&Write performance / Wiping - sol, 15.01.2009, 05:26
      - GetFileSizeEx / Read&Write performance / Wiping - Rugxulo, 15.01.2009, 06:13
        GetFileSizeEx / Read&Write performance / Wiping - sol, 15.01.2009, 06:24
        GetFileSizeEx / Read&Write performance / Wiping - Rugxulo, 16.01.2009, 01:49
        GetFileSizeEx / Read&Write performance / Wiping - sol, 16.01.2009, 07:03
        GetFileSizeEx / Read&Write performance / Wiping - Rugxulo, 18.01.2009, 00:14
        4desasters 4u, DOSsers - DOS386, 24.01.2009, 09:42
        FAT+/FAT/patents - ecm, 24.01.2009, 13:59
        4desasters 4u, DOSsers - Japheth, 24.01.2009, 21:01
        GetFileSizeEx / Read&Write performance / Wiping - Laaca, 14.02.2009, 13:59
        exFAT supported in XP (SP2, SP3) - Rugxulo, 19.02.2009, 02:41
        exFAT supported in XP (SP2, SP3) - Japheth, 20.02.2009, 09:07
        exFAT supported in XP (SP2, SP3) - Laaca, 20.02.2009, 20:16
        exFAT supported in XP (SP2, SP3) - Zyzzle, 21.02.2009, 01:56
        exFAT supported in XP (SP2, SP3) - sol, 21.02.2009, 05:32
        exFAT supported in XP (SP2, SP3) - Rugxulo, 21.02.2009, 05:40
        exFAT supported in XP (SP2, SP3) - Laaca, 21.02.2009, 15:57
        exFAT in FreeDOS unlikely (but FD fixed 4 GB files) - Rugxulo, 15.03.2009, 15:55
        exFAT in FreeDOS unlikely (but FD fixed 4 GB files) - ecm, 15.03.2009, 20:36
        exFAT in FreeDOS unlikely (but FD fixed 4 GB files) - Rugxulo, 17.03.2009, 00:28
        exFAT specification - tom, 17.03.2009, 19:31
        exFAT specification - Laaca, 21.03.2010, 15:42
        former-FAT - DOS386, 22.03.2010, 08:15