George White,

29-Oct-99 08:56:50, George White wrote to Andy Roberts
 GW> On 25-Oct-99, Andy Roberts wrote to MIKE RUSKAI:
          Subject: Newbie

 LRM>>>> The limit on logical drives is simply the letters of the
 LRM>>>> alphabet (for drive designations) left over after all the
 LRM>>>> primary partitions have been assigned.  That is true for DOS,
 LRM>>>> all flavors of Windows and OS/2.

 LE>>>> Actually, under at least some versions of DOS the limits are a
 LE>>>> bit broader. We had a LAN that ran under DOS 2.x. And you could
 LE>>>> not only have drives A-Z, but also @:, [:, and ]: I'm not sure
 LE>>>> if it allowed \:, ^: or _:.

 MR>>> Type "]:" at an OS/2 CMD prompt.

 AR>> Also these:

 GW> 

 AR>> That is 23 more than A-Z.  But I already know by default OS/2
 AR>> auto-assigned drive designators crap out at Z.  So how can we get
 AR>> OS/2 to auto-assign such a partition?

 GW> You've gone the wrong route. OS/2 can only support drives up to
 GW> drive number 31,

Humm... That's more than I have ever been able to get it to auto-assign.

 GW> the HPFS file system reserves the first 5 bits of the 32 bit sector
 GW> number to identify the drive, the remaining 27 bits identify the sector
 GW> within the drive, giving the max HPFS volume size of 64 Gig.

 GW> I would expect the drive letter sequence to
 GW> be:-'X','Y','Z','[','\',']','^','_'.

Perhaps the clue lies in the IFS being assigned.  In my case the drives beyond
Z were always a CDROM or CDR.  In that case they simply failed.

     Thanks and Good Luck,        Andy Roberts
                                  andy@shentel.net
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