emusonacid! legacy

hello
Can I be connected to the internal hard EOS format on the SCSI connector,
and the IDE drive in FAT format on a separate external power supply?
Emu e4XT, EOS 4.7, Quantum scsi hdd 1gb, 40gb Seagate Barracuda

Hi Tomkovsky,

beside the fact that I would never connect myself to the internal hard EOS format neither to the SCSI connector nor to the IDE connector :
If you want to use an external power supply for a hardrive that is installed inside the Emulator then of course you have to drill a hole into one of the covers of the expansion slots to get the HD-power cord from the external power supply into the case of the Emulator.

Another thing is:
There is no need to use the FAT32-format just on harddrives that are connected to the internal IDE bus. You can also use FAT32 on SCSI-drives.
There are two reasons to use FAT32 instead of EOS-FAT:
1. By using smaller clusters, FAT32 can handle larger hardrives more efficent than EOS-FAT. EOS-FAT is suitable for HDs of max. 20GB. Everything above 20GB -> use FAT32
I think that the maximum capacity of a HD in FAT32-format that is supported by the FAT32-implementation in EOS is about 137GB.
2. With a harddrive connected to the SCSI bus (which means that you can also connect a IDE/PATA-drive with a IDE-SCSI bridge adapter to the SCSI bus) and FAT32 installed, you can swap larger files between the PC & the Emulator. As recommended in the manual should the FAT32-HD just be connected to the PC OR the Emulator at one time. Of course is a shutdown of the Emulator & the PC for disconnecting the drive from one bus an connect it to the other bus an effort that we don't want to do very often. But this is the save option not to loose data.
Regarding the connection of a HD to the PC and to the Emulator at the same time, I think that the PC would be responsible for data-loss because it uses a cache for reading/writing from/to a harddrive and is not aware of the current status since the last "update" of the HD content. EOS in contrast to this always makes a re-scan of the HD and knows the current state of the file-system.

Many thanks for the comprehensive reply MOSROB!
I greet and thank

Piggybacking on this thread;-) :

Is it correct that eos4.70 can't access CD roms with (16 bit) .wav files on it? Loading the cd and browsing the disc it says: "No folders on disc". If I remember correctly eos4 can import .wav's from the floppy disc.

Is it Ok to take out my E4 internal FAT32 and connect it to a windows pc and transfer the wav files to a folder on this hard disc and then re-mount it in my E4 sampler?

regards,
Razo

Yes, that's possible.
But how many times do you like to dis- & reassemble your setup to put files on this HD?

You should better look for a solution with a much easier handling.
The CF-Cardreader (you can build it on your own with a SCSI-IDE-Bridge adapter and a CF-Reader-IDE-adapter) seems to be the easiest way.
Nobody says that the CF-Card-reader has to be installed inside the Emulator. This, by the way, would make swapping of files via CF-Card uncomfortable as you always have to power off the Emulator to remove the CF-Card.
... we all learned that hot-swapping of the CF-Card is not supported ...

It would be smarter to connect the CF-Cardreader (connected to SCSI-bus via a SCSI-IDE-Bridge adapter) via an external SCSI-enclosure so that you just have to switch off the SCSI-enclosure and you can remove the CF-card from the reader without creating any electrical signals that may harm the SCSI- or IDE-bus. Then you will be able to insert it into a Cardreader that's connected to your PC or Mac.

Nice idea!
Transferring .wav's in this way is the main use with a CF reader and the E-mu?