Shogun:Total War-Sorry!

Sorry about being such an old game, thought i might back it up now as it is aging.
protected with SD1.4, i give it a run through alcohol 120% with SD profile (no not sd 2/3) and it comes up with literally loads of read errors.
Is this normal for SD1?
I know its normal for sd2, maybe sd3

Yes, it’s normal. In fact, there are more unreadable sectors on a safedisc 1 protected cd than for safedisc 2 or 3. Typically safedisc 2/3 cds have between 550 and 600 unreadable sectors whilst safedisc 1 cds can have anywhere between 800 and 2,350.