> > What was the first usable DOS for systems with hard drives? I didnt start
> > using DOS until 3.x.
On Wed, 23 Jul 2003, Fred N. van Kempen wrote:
> V2.11 introduced the concept of [nested] sub-directories, allowing
> one to collect related files in "binders". There were some limits
> as to the depth of the tree, but in all, with 2.11, the 5 and 10MB
> disks of the time could be used without too much problems.
2.00 !
V2.00 introduced the concept of [nested] sub-directories
PC-DOS 2.10 added some other small miscellaneous, including slowing down
floppy access so as not to time out waiting for the Qume 142 drives used
in the PCJr and portable. (arguably the worst floppy drive EVER)
MS-DOS 2.11 (There was no PC-DOS 2.111) was intended to be the
customizable version for OEMs with other STRANGE hardware, such as 8x80
and 16x80 LCD screens (Gavilan) and BIZARRE drives, such as 720K 5.25"
and even 3.5"! (NOTE: EVERY OEM had their own version of 2.11. Sometimes
there was nothing unique about it, but often MODE.COM was seriously
different, and FORMAT.COM had to deal with any bizarre floppies that had
been added).
(NOTE2: PC-DOS did NOT support 720K (3.5") until PC-DOS 3.20)
EXCEPTION: PCJX (device driver on top of 2.10?)
PC-DOS 3.30 was the first to support 1.4M
(NOTE3: the next version that actively supported customization was MS-DOS
3.31. There was NO PC-DOS 3.31)
--
Grumpy Ol' Fred cisin_at_xenosoft.com
Received on Wed Jul 23 2003 - 12:28:00 BST