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Old 30th Jul 2021, 21:41
  #35 (permalink)  
jimjim1
 
Join Date: Oct 2007
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From CRC failure, sounds like your CD/DVD is damaged.

I have successfully recovered CDs by washing them. Warm running tap, little detergent, stroke RADIALLY with clean fingertips, rinse, pat dry with new kitchen towel. Radially = centre to edge. Never round and round. I wouldn't dilly dally, get it done and the thing dried. CDs have say three copies of each sector on the disk, it can make good data as long as only one is damaged. If you rub round and round there is a chance you will damage more than one of the copies. This is a decent analogy of how they work, if you want more look up Reed-Solomon encoding.

There will be a better cleaning method on the internet.

Then copy the files to a folder on your disk. Do the install from there. If problems try to read the disk more than once. Merge files from various tries. Or maybe file recovery software.

Worth archiving old CDs/DVDs to HDD. Most software you can install from the files. Windows itself of course requires a boot disk. You can make an installable windows USB stick from a DVD. Needs software from internet of course?

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