> I updated my immaculate LC575 from 4meg to 36 meg RAM, and from OS7.1 >to OS7.6.1, and added a new 56K modem ( green, and looked like a 'wave'), >specifically made for Macs. > The modem cable was faulty (all connectors 'dry-soldered') and when >I moved it, it shorted out and crashed the system. (I returned the >modem). > Since then I have had an intermittant memory problem, in that the >machine keeps displaying "DISK FULL' messages. I've tried going back to >OS7.1, 7.5.3, 7.5.5, and currently have installed OS8. > The message from 'About This Macintosh" (under the apple) is sometimes correct, and >displays something like..."..you have 36 meg of memory.. > ..system uses 8 meg > ..you have 28 meg remaining". > BUT, it more often displays an erroneous message "...You have 36 meg, > system uses 31 meg,largest unused block 5meg", and no program will open.
>Mac dealers want $100 to test the ram, and $230 to replace it . > However, the concensus of opinion is that if the "About this >Macintosh" says the 36 meg are intact, then they are. Things HAVE been >better with constant use of "Disk First Aid" and especially "File >Buddy", if they are used at EVERY reboot.
> The latest version of the MacBible devotes a chapter to memory >fragmentation, (and is very critical of Open Transport in general and "FreePPP" in particular).
> Unfortunately, the primary purpose of the machine was to have been for >telecommunications.
> One confusing aspect is that the "MEMORY' screen in "Control >Panels" does NOT agree with the "About this Macintosh" screen, and >recently has denied me use of Virtual Memory as there is allegedly so >little actual Ram left. > Any advice re new configurations or remedial systems would be >greatly appreciated. ( I did replace the battery after the crash) Yours Sincerely, Warren McCowage 02 95573945
