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When confronted with a drive that says there are 36 sectors/track,

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ignore and set it to 18 sectors/track.  This allows FreeBSD to boot with
2.88MB floppies which are used in older ThinkPads.

Submitted by:	Random Net person whose name I lost
This commit is contained in:
Nate Williams 1995-09-16 05:02:37 +00:00
parent b7f41e3f67
commit e21fd30049
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=10816
1 changed files with 5 additions and 2 deletions
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7
sys/i386/boot/biosboot/disk.c
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@ -24,7 +24,7 @@
* the rights to redistribute these changes.
*
* from: Mach, Revision 2.2 92/04/04 11:35:49 rpd
* $Id: disk.c,v 1.13 1995/05/30 07:58:31 rgrimes Exp $
* $Id: disk.c,v 1.14 1995/06/23 01:42:42 ache Exp $
*/
/*
@ -91,7 +91,10 @@ devopen(void)
#endif
di = get_diskinfo(dosdev);
spc = (spt = SPT(di)) * HEADS(di);
spt = SPT(di);
/* Hack for 2.88MB drives */
if (spt == 36) spt = 18;
spc = spt * HEADS(di);
if (dosdev == 2)
{
boff = 0;