Enter The Matrix - Need Help -> BACKUP !!!

[scriptor]

hi,

i've got some probs with enter the matrix : i made backups of the first threee cd's ( 1,2&3 are the install cd's ... no copy protection !!! ) without problems ( i used "blindwrite 4.4.0.36" ) ... i checked these iso's with blindwrite and there were no mistakes on it ... so i trieded to make a backup of cd 4 ( securom 4.85 or 4.75 ) with 4x speed ... but unfortunately there are mistakes on the iso ... so i trieded again with 2x & 1x speed ( using a "hp 9200+ SCSI" writer ), but again i had mistakes on the iso ... my question, so far : are these mistakes "normal" or am i on the "wrong way" to backup ??? any suggestions ??? THX A LOT ... i work on it for 2 days now ... and it's frustratingly

mfg

scriptor