OS 8.1 was the first OS version that allowed one to select Extended format (also known as HFS+) - which I did using the OS8.0 CD and the free download of 8.1. Wherein lies my problem.... I would like to reinstall a fresh System Folder (as part of periodical hard drive maintenance) to remove any potenial gremlins which may have crept in (for example, my modem control panel will sometimes not disconnect; requiring a restart). And the machine will not recognize the OS 8.0 CD, which must be installed before 8.1. Neither do I have an 8.1 CD (I'm not even sure such is available). I've been fortunate to date, having backed up my entire hard drive to a Jaz cartridge, but that is not as good as a clean reinstall (and some preferences, etc. are lost). Does anyone know of a solution? Or perhaps have an old 8.1 CD? Users can subscribe to the List by sending an email to <muglo-request@xxxxxxxxxxxxx> with 'subscribe' in the Subject field Users can unsubscribe from the List by sending an email to <muglo-request@xxxxxxxxxxxxx> with 'unsubscribe' in the Subject field Users must send messages or replies to <muglo@xxxxxxxxxxxxx> All messages are archived so that you can view them at any time by going to <//www.freelists.org/archives/muglo> Problems concerning use of the FreeList should be sent to <paulthomas@xxxxxxx>