Apologies for posting to two lists but it seemed the best way of locating the most appropriate audience.
As many people have reported, the Iomega Zip 4.2 extension that works with System 6 and Zip 100 drives does not work with the Zip 250. A quick examination of the extension showed me that the extension contains two occurrences of the string "Zip 100" (can't recall if it was lower or upper case). Don't ask for the file offsets -- I've mislaid the piece of paper but the string only occurs twice and can be found with a simple ASCII search. I changed the string "100" to read "250" and tried it on a IIci running System 7.1 (yes, I know it's not System 6 but the principal applies). The modified extension operated quite happily with both Zip 100 and 250 HFS cartridges and I could read/write/format. The modified extension will only work with Zip 250 drives but wil work with both sizes of cartridge. I encountered problems with FAT (PC format) cartridges but I always have experienced difficulties with them -- for some time, I backed up web pages to FAT format cartridges and after a couple of years I had no end of problems but fortunately no data lost. I no longer use FAT format Zip carts for long term data storage -- they are fine for short-term data exchange between PCs and Macs but I will not trust them for a backup. This is possibly a PC Exchange control panel problem with multiple copies of files with the same name but I don't have the evidence to point fingers definitively. If you have a Zip 250 and a System 6 Mac and fancy trying this, use your favourite binary editor (eg Norton Disk Editor) to modify a copy of the extension. The hack worked fine for me but without a lot more testing, I wouldn't recommend it for crucial data. Please let me know of your success or failure. Please don't forward this hack to others without including my warnings and reservations. Phil --- "Most engineering products can be readily adapted to suit their originally intended purpose" -- C H Thornycroft -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> The FAQ: <http://macfaq.org/> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
