Replacing microdrive with cf card,

Can be lots of things. Would have been handy, if you had told what card you are using. Your camera can work with CompactFlash, Microdrive and xD-Picture cards.
If you did not insert the card(s) you are using, correct, or you removed the card in a wrong way, you could have damaged the cardholder, causing an error you probably can't repair yourself. The CF and Microdrive you can remove by pressing the eject button. The xD-Picture card you can remove by pressing in the card, and release it. The card comes out.
Then you could have damaged the file system, by opening the card cover, while the card access lamp was blinking. What ever card was in, the filesystem can be damaged.
Then you can have two cards in, Both, o CF of Microdrive and a xD picture card. Some settings are required for the camera, to know hat card it should use.
If you have an Microdrive, the drive can be damaged, by a magnetic file, or the drive just stopped rotating. A micro drive is actual a miniature spinning hard drive.

First check if the memory card is inserted correct. Eventually, remove it and check all contacts, on the card and in the camera. Then try formatting the card. If you think there could be important pictures on the card, put it in a external card reader and use a recovery program, to see you can recover the pictures on your computer. Programs can be found on the net.
If you can't format the card, check if you have a Microdrive. If so, try to replace that with a CF or xD card.
I hope something is to any use for you.

Next time, please give us some more details. I know you exactly see and know what is not working, but we only can use your description. And only what you give us.

Your internal microdrive is probably playing up. You can either get a new microdrive (can be found in old ipods) or a CF card (sandisk CF ultraII work) or buy a new one.

Mowcius

maybe your problem is the microdrive that Rio Carbon have...
mine also have the same problem and now is still seraching for cf card exchange for the microdrive

The D70 has known issues with certain cards / capacities. Nikon has identified the cards and capacities that are guaranteed to work with the D70 specifically, on their page dedicated to this info linked below:

http://support.nikontech.com/app/answers/detail/a_id/9601

It seems that only Lexar and Microdrive cards that are 4Gb are supported (some with significant limitations) and no card greater than 4Gb is supported at all, regardless of manufacturer.

The microdrive is probably broken. Some people have claimed that if you give the sides a sharp tap then it has worked again but if this doesn't work then you probably require a new player. I have managed to replace the microdrive with a CF card in my Rio carbon, this has worked for many people may not work for you (you can read this: Replace broken hard drive with CF card if you want to try)

Hope this helps,

Mowcius

In the first instance you should never format a media card/drive for a camera in a computer Windows does not know about the file type cameras need. Now getting your pictures back www.konvar.com - has PC Inspector Download and install this and run it through the card -preferably in a card reader, rather than still in the camera.

I attached a plastic strip on the back of my MicroDrive. It has a one inch plastic tab on the top and I use that to remove the drive from the slot. I got the strips (they have one sticky side) with another CF card I got somewhere along the way and it works great! Otherwise, I'd probably be looking at using some fine needle nose pliers, a pair of tweezers or just leaving it in forever.

I got my 1gig microdrive last Wed. UPS says my Axim is going to be delivered today. I'll let you know how the microdrive performs as soon as he axim is charged.

The microdrive is compatable with anything that supports reading compact flash memory cards, because there is a common method of communication between flash and hard drives that use pcmcia or CF slots.

You can use Compact Flash cards (Type I and II) and Microdrive. By connecting with the CF Card adapter (MACF-10), xD-Picture Cards can also be used. Basically, you can use any manufacturer's Compact Flash Card in EVOLT E-300. The following Microdrive cards are verified as compatible with the E-300 camera: DSCM Series - DSCM-10340, DSCM-10512, DSCM-11000 3K4 Series - HMS360402D5CF00, HMS360404D5CF00