Cyclic Redundancy check errors: is this drive doomed? (CDROM

[Red_October_7000]

I've got a CDROM drive FRU 08K9545 that will give cyclic redundancy check errors. I got them a long time ago on my R30 loading Baldur's Gate II; by the time I got to the expansion CD it was giving errors consistantly. For some reason this was cured by using my backup copy of the CD (Yes, I'm the one guy who makes legitmate backups of software). Anyway, nothing happened for a couple years until this Sunday when the drive found itself inside my X20's Ultrabase X2 mediaslice installing Windows 2000. (the machine says it's designed for W2K or 98SE; when I got it it had ME on it....) So by the time I got to the CD with the Service Packs, I got an error in the middle of SP3, tried again and got lucky. By SP4 I couldn't get through it without long periods of idle terminating in the afforementioned cyclic redundancy check error. By putting in the Ultrabase the WORM drive I got with the machine (Which was living with my R30 for convenience), I got through the install easily and quickly. Why would this drive do this? Can it be saved? Admitedly the Ultrabay CDROMs are perhaps the most common and least costly items for the Ultrabay...