Can't format a memory card for my minolta damage

Sorry, no. SD cards max out at 2GB. Larger SDHC cards are electronically incompatible and will only work in devices specifically designed to accept them. It's a hardware incompatibility and no amount of firmware changes will make a SD device accept SDHC cards.

The Z6 uses MMC and SD cards. If you look carefully at your 8GB card, you'll see that it's an SDHC card. While it fits into the slot, it is electronically incompatible and will not work. The Z6 is limited to cards 2GB and smaller.

The Z6 works with MMC and SD cards. Your 8GB card is actually an SDHC card. While SDHC cards will fit into SD slots, they are electronically incompatible and will not work. You need to use MMC or SD cards, 2GB and smaller.

The Z6 works with SD and MMC cards. It does not work with SDHC cards at all, whatever their size. SD cards are limited to 2GB in size.

According to the manual the Z740 uses SD and MMC cards. That means that SDHC cards such as your 4GB card will not work with this camera. You are limited to SD cards up to 2GB in size.

You need a suitable sd card card for your mobile phone.

The spec for the SD card format is going to 2GB but the Kodak C330 not compatible with 2 GB SD memory cards.

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But try an firmware upgrade. Maybe the supporting now the 2 GB memory cards.
Why download firmware version 1.07?
This firmware version improves memory card compatibility and provides general performance updates.
KODAK EASYSHARE C330 Zoom Digital Camera Firmware

Firstly, what size memory hard do you have? Is it an SDHC? Secondly, have you checked that the memory card isn't locked (there is a switch on the side of it). Has it worked with other memory cards?

Click > Start > Run > type "CMD" Then
Type "CHKDSK" and type the letter of your SD drive and "/F".
chkdsk Q: /F > press Enter

another example:
chkdsk D: /f
chkdsk E: /f
D or E is the letter or your SD drive.