To clarify: some of the older Macs will refuse to start up when the motherboard battery is dead, and the LC475 is one of them.
The method porter describes gets around that fault. Leave it powered up for a minute or so, then very quickly off and on again. This will get enough charge into the machine for it to remember how to boot, after which it will operate as per normal until it is next powered down. This will allow you to recover the data.
Recovering the machine is especially worthwhile if there is an Ethernet card in it, as you will then have several relatively easy options to back up the data.
You will have much more success using an emulator, or a proper Mac HFS/HFS+ disk format utility for Win, than trying to recover and decipher the RAW data IMHO. The tools I have already pointed you to for example - although I must admit I wasn't expecting the free version of Gemulator Explorer to be so limited.
There is also a Win utility called MacDrive or MacDisk, which has a free 30-day trial, and no file size or number limitations AFAICR
Is the problem that you have no SCSI card on the PC end?
If you don't, no amount of software magic or wheel reinvention will help you read that disk on the PC. SCSI and IDE/ATA/SATA are completely different at the hardware level. They don't even have the same number of pins. If you try to somehow plug that drive into an IDE/ATA or SATA bus, you can expect to smell the tangy odor of burning components and data real soon.
Same goes for the parallel port - which does have the same physical format as some kinds of SCSI connector, leading to the not-infrequent destruction of both motherboards and drives.
Long story short: if you wanna read that drive on a PC, you need SCSI.
The method porter describes gets around that fault. Leave it powered up for a minute or so, then very quickly off and on again. This will get enough charge into the machine for it to remember how to boot, after which it will operate as per normal until it is next powered down. This will allow you to recover the data.
Recovering the machine is especially worthwhile if there is an Ethernet card in it, as you will then have several relatively easy options to back up the data.
You will have much more success using an emulator, or a proper Mac HFS/HFS+ disk format utility for Win, than trying to recover and decipher the RAW data IMHO. The tools I have already pointed you to for example - although I must admit I wasn't expecting the free version of Gemulator Explorer to be so limited.
There is also a Win utility called MacDrive or MacDisk, which has a free 30-day trial, and no file size or number limitations AFAICR
Is the problem that you have no SCSI card on the PC end?
If you don't, no amount of software magic or wheel reinvention will help you read that disk on the PC. SCSI and IDE/ATA/SATA are completely different at the hardware level. They don't even have the same number of pins. If you try to somehow plug that drive into an IDE/ATA or SATA bus, you can expect to smell the tangy odor of burning components and data real soon.
Same goes for the parallel port - which does have the same physical format as some kinds of SCSI connector, leading to the not-infrequent destruction of both motherboards and drives.
Long story short: if you wanna read that drive on a PC, you need SCSI.