Since LBA is enabled, it is supported (or else it would not appear). So it seems that your mb does support it. (Is it set on "auto?") Since a complete scan goes ok on another computer, the disk should be ok. Therefore, I suspect that you may have a bad cable that is causing problems. Have you had trouble reading from the disk in applications??? I would experiment using a different cable. Perhaps this one has a somewhat weak connection somewhere. (This is just a guess.) Dean Kukral -----Original Message----- From: W.D.Duck McDonald <[log in to unmask]> Date: Wednesday, August 26, 1998 9:18 PM Subject: [PCBUILD] Hard Disk size limit on 486 ?? Hello, I'm trying to install a Samsung 2.1Gb IDE drive in a 486/66 computer. Is thare a hard drive limit that this machine can see? It is a Zeos Rattler Pantera, Pheonix BIOS v4.03, LBA is Enabled. When I try to run scandisk on this machine, it always gives the following message: "ScandDisk cannot read from the last cluster on drive C. This cluster is either damaged, or your system is not configured properly. Drive C may need to have Logical Block Adressing (LBA) enabled to work properrly, or its disk partition may be incorrectly marked as a non-LBA partition. Data loss can occour if you LBA setting or disk partition type for this drive is misconfigured......." I eventually went ahead and ran scandisk and it started finding all bad (I don't rember if it was sectors or clusters) after about 24% of disk was scanned. I installed this disk as a slave in my 6X86 P166+ and ran FDISK creating only one large dos partition. I formatted it and it scanned OK (full surface scan) using ScanDisk. When I placed it back in the 486 machine, ScanDisk again gave the above message. I'm using Win98 on both macines. Is thare a hard drive size limit that this machine can see even with LBA enabled? Will I have to partition it? If so what size would be best? Thanks, "Duck" McDonald [log in to unmask] [log in to unmask]