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New UIDE Available (May 15) (Announce)

posted by rr Homepage E-mail, Berlin, Germany, 19.05.2009, 13:49

> Can RDISK.SYS be modified to allow 64 KB cluster sizes? Thereby, we could
> create a FAT16 drive with up to 4 GB of XMS. SHSURDRV does allow this.
> Indeed, I've allocated up to 3.5 GB with it successfully.

Jack sent the following to me:

To "Zyzzle": I regret that I cannot modify RDISK to
allow up to 4-GB of RAM memory. On my V6.22 MS-DOS
system a 64K cluster size works, but CHKDSK declares
a Divide Overflow!! Limiting RDISK to 32K clusters
permits CHKDSK to work O.K. Thus, 64K clusters are
NOT a "safe" option on all DOS systems, and I do not
want them in RDISK.

If you want to re-assemble RDISK "for your use only"
note the following:

I_Siz1: mov     ax,DrvSize.lw  ;Get user's desired size.
        cmp     ax,2047    ;Does user want over 2-GB?


If you use 4095, not 2047, RDISK will go up to 4-GB.

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