garnett@cs.utexas.edu (John William Garnett) (02/12/91)
Well, its finally (after only three months actually) happened to me. I attempted to boot my od + 40MB swapdisk 030 cube yesterday and received the "Bad Disk" icon. Booting using bod from monitor mode gives: od0a: read failed (uncorrectable ECC error) 4149:0:0 od0a: read failed (uncorrectable ECC error) 4149:0:2 blk0 boot: od() odmach od0a: read failed (ECC) 4149:0:0 od0a: read failed (bitmap bad but no alternate found!) 19579:0:12 no valid disk label found device couldn't set file system sector size load failed I took this same disk to another system and mounted it (wasn't able to try booting from it). All of the files on the disk appear to be intact. I am assuming that some boot block was trashed. Does anyone recognize this particular error? Is it safe to reuse this disk? (that is, assuming that BuildDisk will make it bootable once more). Anybody know the likely cause of the above problem? The cube was bought new and has only been in use for about three months. The environment is not very dusty (subjective judgement). I rarely leave it powered on for more than a couple of days at a time (not attached via UUCP yet...). I'd like to avoid this problem in the future. Thanks... -- John Garnett University of Texas at Austin garnett@cs.utexas.edu Department of Computer Science Austin, Texas
garnett@cs.utexas.edu (John William Garnett) (02/12/91)
In article <1083@nada.cs.utexas.edu> garnett@cs.utexas.edu (John William Garnett) writes: >Well, its finally (after only three months actually) happened to me. > >I attempted to boot my od + 40MB swapdisk 030 cube yesterday and >received the "Bad Disk" icon. Booting using bod from monitor >mode gives: > > od0a: read failed (uncorrectable ECC error) 4149:0:0 > od0a: read failed (uncorrectable ECC error) 4149:0:2 [stuff deleted] I wrote the above note... The reason I am replying to my own post is that this same optical disk that refused to boot at least four times in a row is now working perfectly. This has me at least as worried as when it stopped working... What is going on? Could this have something to do with the defective optical disk drives (being replaced by NeXT) mentioned in a previous post? -- John Garnett University of Texas at Austin garnett@cs.utexas.edu Department of Computer Science Austin, Texas