Look for volume D if found and volume size is greater than 1tb run DISKPART /S filename

Question

As far as I understand I can use:

WMIC /node:"%computername%" LOGICALDISK GET Name

to get the name and I can use:

WMIC /node:"%computername%" LOGICALDISK GET size

to get the size.

I am have difficulties to get this working using a batch scripting.

Answer 1

As comparing the 1TB size would get difficult with batch, let wmic do the job

WMIC /node:"%computername%" LOGICALDISK where "Name='D:' AND Size>1099511627776" Get  Name|findstr "^D:" && (
    DISKPART /S filename
) || (
    Echo Partition is less than 1TB
)

Otherwise you don't tell about the difficulties you have.