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Dell D600 Floppy Disk Bootblock BIOS Recovery HELP!


New Member
Jun 11, 2009
7 (0.00/day)
I have a dell d600 that i bricked trying to downgrade from athe a16 bios to the a02 bios. This laptop isn't mine and i need the bios restored. I've bought a floppy drive and looked at the bios using winhex and it should take EBON?????BIN BON?????HDR BON?????BIN or BON?????HDR. I bought a usb floppy and put properly named files on the disk. Hold down the END key then plug in the power and get an orange power light, then i let go and the laptop accesses the floppy for like 1/10th of a second then thats it. Is their something im missing? It has usb floppy support written in the bios so how come i can't use this feature. I promise to donate if you help me out. If anyone wants to look at the bios files ill post them.


Graphical Hacker
Feb 1, 2006
9,501 (2.17/day)
Dallas, Texas
System Name Whim
Processor Intel Core i5 2500k @ 4.4ghz
Motherboard Asus P8Z77-V LX
Cooling Cooler Master Hyper 212+
Memory 2 x 4GB G.Skill Ripjaws @ 1600mhz
Video Card(s) Gigabyte GTX 670 2gb
Storage Samsung 840 Pro 256gb, WD 2TB Black
Display(s) Shimian QH270 (1440p), Asus VE228 (1080p)
Case Cooler Master 430 Elite
Audio Device(s) Onboard > PA2V2 Amp > Senn 595's
Power Supply Corsair 750w
Software Windows 8.1 (Tweaked)
Since the floppy is a USB device, you need to boot from "USB device" or similar, instead of floppy.