BBS: Inland Empire Archive
Date: 04-13-92 (23:18) Number: 155
From: STEVE HALKO Refer#: NONE
To: SCOTT WUNSCH Recvd: NO
Subj: More questions! Conf: (2) Quik_Bas
SW> 1) Does anybody know how to check the amount of free conventional
SW> memory? DOS 5.0 UMB's? XMS?
For free conventional memory, I use INT 21h, Function 52h to find the
first MCB (Memory Control Block). Then I walk the MCB's til I find
the last one - the "size of block" field in the last MCB is the
amount of free memory available.
UMB's and XMS - I don't know, but I'm looking forward to finding out
from someone!
SW> 2) I am trying to produce a report similar to that of CHKDSK, but
SW> I can't figure out how to check the amount bad sectors.
You might investigate INT 21h, Function 36h. It reports total drive
space and free drive space, but I'm not sure if these include bad
sectors or not. Lost clusters are not counted in free drive space for
this interrupt.
If you find that this doesn't help you with # of bad sectors, then the
only other way I know of is to read the FAT and see how many clusters
are marked with the bad sector code (FF7h for FAT-12 or FFF7h for
FAT-16).
* SLMR 2.1a * Backup not found: (A)bort (R)etry (P)anic
--- DB B1064/002487
* Origin: Gulf Coast BBS -QuickSHARE #2- (904)563-2547 HST/V.32bis (1:365/12)
