Bug 17890
| Summary: | Still having trouble identifying disk geometry (in ata-disk.c now) | ||
|---|---|---|---|
| Product: | Base System | Reporter: | asherrod <asherrod> |
| Component: | i386 | Assignee: | Søren Schmidt <sos> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | Unspecified | ||
| Hardware: | Any | ||
| OS: | Any | ||
Responsible Changed From-To: freebsd-bugs->sos sos handles the ata driver. State Changed From-To: open->closed Hmm, this is a BIOS problem, and the fix here breaks other devices that report LBS without really supporting it. Please upgrade your BIOS.. |
This problem existed in wd.c and was carried over to ata-disk.c. I have been told over and over it is not a "real" problem. Asking various users, I have discovered that I am not alone in experiencing this. Of course, others just followed the "Well, add a DOS partition, and let Microsoft fix your problem" advice. But it IS a problem. Whenever I install I have to go back and re-write the disk driver then re-run newfs, etc... It is a problem. It can be fixed (easily). My drives are not antiques or that unusual. One Western Digital, one Maxtor. Okay, cheap disks, but not uncommon. The problem: Not all disks return 16383 cylinders to indicate LBA mode must be used. Mine return 4192, which rsults in rather small disk sizes. Fix: 129c129,130 < if(AD_PARAM->cylinder = 16383 && adp->total_sec < AD_PARAM->lbasize) --- > if((AD_PARAM->cylinder == 16383 || AD_PARAM->lbaflag) > && adp->total_sec < AD_PARAM->lbasize) How-To-Repeat: Boot the system with one of the disks in question. Try running /stand/sysinstall. Look at how small the disks just became.