mirror of
https://github.com/balena-io/balena-cli.git
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37 lines
1003 B
CoffeeScript
37 lines
1003 B
CoffeeScript
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childProcess = require('child_process')
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path = require('path')
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_ = require('lodash-contrib')
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async = require('async')
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fs = require('fs')
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scriptsPath = path.join(__dirname, 'scripts')
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diskpartRescanScriptPath = path.join(scriptsPath, 'diskpart_rescan')
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diskpartRescanCommand = "diskpart /s \"#{diskpartRescanScriptPath}\""
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exports.rescanDrives = (callback) ->
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childProcess.exec(diskpartRescanCommand, {}, _.unary(callback))
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exports.eraseMBR = (devicePath, callback) ->
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bufferSize = 512
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async.waterfall([
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(callback) ->
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fs.open(devicePath, 'rs+', null, callback)
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(fd, callback) ->
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buffer = new Buffer(bufferSize)
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buffer.fill(0)
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fs.write fd, buffer, 0, bufferSize, 0, (error, bytesWritten) ->
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return callback(error) if error?
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return callback(null, bytesWritten, fd)
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(bytesWritten, fd, callback) ->
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if bytesWritten isnt bufferSize
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error = "Bytes written: #{bytesWritten}, expected #{bufferSize}"
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return callback(error)
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fs.close(fd, callback)
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], callback)
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