This summary outlines the steps taken to recover a WD20EZRX hard drive that was unreadable and staying busy. The drive was short connected to bypass initialization and the ROM and firmware were backed up. The 02 module was disabled and re-enabled along with a firmware restart. A slow fix was performed to address slow detection issues. After scanning, the drive's ID and capacity were detected properly, indicating a successful recovery.

1. WD20EZRX-00D8PB0 data recovery case study
This is one of success case done by DFL engineer today. The user is from India. He
mentioned that the patient drive can spin up and no clicking noise. But it stays busy,
unable to IDed, even cannot read ROM.
HDD ID
Patient drive: WD20EZRX-00D8PB0
PCB Number: 2060-771945-001
Capacity: 2TB S/N: WD-WMC4M0F7ZN0T
4 Platters / 8 heads
Reported symptoms
No access to ROM and firmware module, no ID information, drive stays busy in DFL
device.
Solution
Following steps were performed for this case:
1. Short connect: since the drive stays busy, we cannot read the ROM, user has to
short connect the TV9 and TV10 on PCB. Release this operation once the drive
get ready.
2. Back up ROM and read firmware module: this is a simple but important step for
all WD cases.
3. Disable 02 module-Execute-firmware restart and then exit the current program
interface
4. Slow fix: go to common repair – slow fix. This is a very useful feature for WD

2. drives. Many cases such as slow initialization, slow detection and slow reading
can be fixed by using this function.
5. Enable 02 module – firmware restart again
6. Scan the drive: ID information and capacity were detected properly, the whole
drive can be scanned smoothly.
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